GeoSci.xyz GWB Lectures, 6 Feb 2020

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From YouTube: 2020 02 06 Day4 Part3 ERTsurveying

Description

In this video we cover the basics of ERT surveying.

A

So right now I'm going to teach you how to make these short connectors.

A

Short connectors are used to connect.

A

Your connector, it looks like this.

A

B

V2 McCabe Emma para, the oh I am so.

A

Then every electrode needs to be connected to this wire. This wire, it has it's a multi-core wire, so it has 36, of course, like 36 small wires in each.

A

So you connect here and then you will connect to the electrode and then the next one over here and then you connect to the electrode. You just keep going.

C

About to show them look.

A

Okay, I, don't know everyone can see, but so here's the finished one.

B

A

They don't have to be too long, we'll.

B

A

These enemies, so here's a here's, a wire, the wire is about 16 or 16.

A

So we measure 30.

D

B

So we'll do 48 47 years 40 leave it.

E

A

A little screw on this connector and connect, oh my god, or what we buy, and so we need to connect to the copper.

A

So we'll do some wire stripping.

A

To be about this much Alabama and.

B

If you have it stripped.

A

Before it helps, if you move it back and forth.

A

And then you pull.

B

A

One is quite tough.

A

So now now we try to wrap it or coil it around the screw. So.

E

To do this, it's.

A

Very small, so it helps if we have us some pliers.

C

So everybody will get to do a couple of these make up a couple, not.

B

C

He'd have enough yeah, and sometimes when you go through the, if you're in the forest or the jungle or whatever it is, you need longer than thirty centimeters, so you'll put two together.

C

You can just connect two together like this to.

E

C

Them longer and.

C

You always need to have some extras a little.

F

A

Then screwdriver five.

B

Flat screwdriver.

A

Okay, so now there should be a good connection.

B

C

You have to take a pair of pliers. Oh that's right! Sorry! So the little tabs stick out.

E

A

Then you do the other side, of course, and then you have a connector.

A

Until we, you know, maybe you should do a resistance tests on the multimeter.

A

So I guess we only have about two sets of tools.

A

C

We'll pass the tools around get some wire plan.

B

And people can wake up you coming man, let's see like buy it. You.

C

Can do it during the break or you can do it while we're talking.

C

Wait you're not taking credit for.

C

These are the slides. These are the slides that are in their presentation that I'm going to give now, so you can mark them up any notes. You want to take.

B

C

We will also have the electronic copy on the Google Drive, so you could download it later.

C

So we'll look at this wherever it's going. Oh there look at the sis cow this afternoon as part of the electrical resistivity imaging 2d, that this instrument has two capability of doing.

B

My manatee Dean empathy in making the movie from Togo Jack I.

C

Mentioned to you yesterday, some of the properties of this. We have four cables that get connected in equal.

B

Equal semantics, the Monte so.

C

You can maybe see it, so this is one 236.

B

Dick kind of those that's out there, so that's.

C

Electrodes 1 to 36 and.

B

C

37.72 that.

B

C

B

C

You don't have to have all the cables hooked up. You can just do. 36 54, you.

B

Can photo all the tasty out of it allows we looked in it for my not a number that I don't.

C

For example, tomorrow we'll go to the park in the morning and hookup 72, hopefully at 4 meter spacing.

B

Maybe dust big Nick when I said net to I was on my way out that.

C

Will give us 284 meters long.

B

284 yeah just that leave me if you don't so.

C

Your your first one is at 0 when you're 70. Second one is at 284 meters, see.

B

Honey, yes, thank you so.

C

It's not 288, because there's only 71 spaces.

B

Does a 71 space machine at the top yeah.

C

So we'll have two cables on each end. One 18 we get in that statement.

C

Then I'll pass this around, so you can see it, but it has a keyway on it. That's the key right there. It.

B

B

C

It fits into the big one on here very carefully twist. Then, let's see if we can.

B

Hear everybody be quiet and in town we all.

C

B

Up I mean listen here; click. That means it's good.

C

And we have one extra cable, also capable.

B

And focuses on body, we.

C

Have been operating one of these systems in Canada for ten years.

B

C

No problems, then,.

B

I'm asleep in it don't get my data so.

C

If you are kind and treating it like a baby, it will last a.

B

Miserable wretch, accountable and.

C

I will show you later how to coil this cable. It is you have to be very careful with it.

B

C

The way we came, the coil it is to hang this here and over the neck, like that, I'll show you.

C

And that's all that so electrical resistivity field surveys, how to design them and how to collect the data.

B

Metrical resistivities rows that we have a little neighborhood designer car. A balloon design below did I am janessa, so.

C

The same as we were doing yesterday, we're measuring the potential difference. The mm with an a/b current injected.

B

He becoming would chase that beetle potentia MN bull, shot up your body.

E

C

A

Wait see what happens.

C

Well, everybody has one of these forums OOP. If you have one of these forms yeah, you can follow along right. There.

F

C

You see the equipment down, Thank You Donna, since Carol r1, plus that's important, because some of the software requires you to select sis Cal, r1 plus just.

B

Where does this go? We have made, maybe we'll do it my way, it's you body and I've.

C

Gone over everything else, but I, you know what one thing that we don't know is: what are the conditions where we're collecting the data.

B

Did that come in dia.

C

Are we going through the forest.

B

My life, don't really matter, no bethie dramas. I have enough, are.

C

We all in open fields.

B

Madhubala game.

C

So you can see on that third picture: this is a shot from Indonesia.

C

Borneo I'm going going across, probably a race field or something like that.

C

So when you're designing the survey, we will go out tomorrow into the park and do a very simple when're array for one that will take about two hours of for the data to be collected.

B

C

Go in the field to do surveys with between two and five people.

B

C

Depending on what the terrain is like, it will take us up to two hours to connect everything up.

B

C

With everybody here we will take one hour.

B

C

If we start at 8:00, we should have everything collected by earth connected by nine o'clock.

B

C

Thirty, nine.

B

Equal night, quite often off did I die, lovely tennis and I thought this. Anybody and then.

C

Will give people a chance to see how we start the data collection.

B

Yeah by me and.

C

Then we can come back here, so we don't have to stay in the Sun.

B

C

Our ger has volunteered to stay out of the Sun and watch the equipment.

E

C

Will say and I understand that you also because of the heat we may have a truck out there with this unit in it.

B

Already the system will anything kind, I know you see that one up so that it doesn't overheat.

C

Over he was down when it's running, it's continuously running injecting current, and it gets harder and harder. This.

B

Is only a second and runners whether he got them, he doesn't hit Navarro.

C

So the way it injects some is, it injects a positive voltage. Then it reverses and injects a negative voltage and you choose the time it could be 500 milliseconds one second 250.

B

Take a URI I'm occupy, but we get to choose.

C

That okay, yeah mama, so you can see on the list here. First of all, you have to decide. Are you doing a 1d survey like we did yesterday a vertical electrical sounding.

B

Monday I love, you auntie savvy Dyna, anulom Allah and you.

C

Would choose to do that if you just wanted to know something about what the conditions were at one point then.

B

Am I blue teenage shoelace without beads in it? So you know, but.

C

What we're going to do and we will be able to compare the 2d survey that we do in the park tomorrow to the 1d survey that we did yesterday. I mean.

B

Look at yesterday yesterday, I'm gonna the wanted salvini, gonna kind of a Dookie, savage Emperor, nice EB, C bombing and.

C

The equipment also can be used in boreholes as well. So we've done Boerboel surveys as well.

C

So this is the ground surface, mmm-ah.

C

E

C

We're going to see Nikol depends upon, what's listed here, the length of the line, the total.

B

Length of our 2d line D equal month, oh yeah, the Apple will be viewed off the type of array. We're using I, really love, never able Moody beat up Grenier dipole-dipole. That would echo loud, but.

C

As you know now, particularly the resistivity of the ground, the.

B

Resist is the museum. Is this: if you examine a tea bottle or not.

E

If this is 100,.

C

Ohm meters, maybe most of the current- it was here and doesn't get into the lower layer very much so.

B

I, don't diagnose anybody. The opponent wanting me I will pick me up. You have people if this is 500. Ohm meters.

C

Then more current makes it deeper.

B

Into the ground, so I'm is II, don't I never pulled on me and we see deeper and so.

C

Is there a myanmar term for rule of thumb? Do you know rule of thumb just it's a way of estimating something? That's just a standard way of estimating.

C

So you can estimate how deep it will see estimates or common areas, because in resistive conditions the.

B

Resistivity minute in in you, MA.

C

It will see from one quarter of the length to 1/10 of the length the total length of the line.

B

Leave them to both. What do you have a boy yeah I leave out the bumper yeah me.

C

So if we have a 100 meter.

C

C

We will see somewhere between 10 meters, 1/10 and 25 meters, 1/4 of the line length.

B

We have 2y.

C

B

C

This would be in resistive.

B

Conditions, yes, I'm, not at all a.

E

B

Minute, a mutant in you are- and this would be in conductive position.

C

So let's say a general.

B

You guys just an annuity mean you.

E

C

In average conditions, it's 1/6 to 27th.

B

Yeah a Chinese I know: tableau of them are unavoidable. Nothing, yeah, yeah,.

C

So approximately 16 meters for 1/6, then approximately 14 meters for 170.

C

And how well we see how resolution? What's the third for resolution.

A

B

Resolution boundaries or of your abilities are the diameter resolution, but they are not so.

C

Depending on the spacing of our electrodes.

B

For my space tile in the Apple TV on the Apple TV with.

C

This system, we would vary it from one to ten meters.

B

These system, I think I need to say he does come in one.

C

Meter would give us very good resolution.

B

Then we'd acelino resolution comes out yarmulke, but we wouldn't see as deeply.

C

And that's all over me, nine and ten meters would give us poor resolution.

B

Maybe does a resolution chao-ahn me that man we'll see ya.

C

So when you're designing the work you're going to do, it's called a trade-off high resolution, shallow.

B

Who don t think I'm on that I condone either one with zero resolution me lieutenant I'm, an equity general, a dozen Gua? Don't a lower resolution see deeper solution job you know, and then we have on me.

C

So and sometimes you're restricted by the space that you have to so in the park, we may only be able to stretch out 220 meters or 240 meters, not the full wing, to.

B

Nearly my Jeremy up area and it turns out, take them up. Bang me out.

B

C

I said yesterday with 72 electrodes at the 10 meter, spacing we can stretch it out. 710 meters.

B

C

A few other things that I include in that survey design is how many people do. You have.

B

C

Much time do you have and then health and safety issues that we talked about.

B

C

People around or you're in a remote area.

B

C

This system has an internal battery. That's fine for 1.12.

B

Threat time isn't any set Emma and I'm.

C

Not too happy about.

B

C

B

Surface, you know: do these Dhabi to Little Miss or not so.

C

You might be able to run one survey short I, don't mean this way, I mean over time, so maybe for three or four hours. Oh.

B

Yeah, oh yeah, take it take your time. I take John, John, saying good idea. Yeah.

C

But we'll use an external battery for the surveys that we're doing an external 12-volt car battery, sending.

B

That book by Boppity DNA net waiting on my head.

C

And it's important that you insulate that car battery and this system from the ground.

B

In so lately, I believe it's later on, but that so.

C

We'll put this on plastic or wood.

B

And the battery also to actually like I'm a Atacama and.

C

You you get to be creative, because if your battery runs out, let.

B

Me not go um Isley. You.

C

Can use your vehicle battery.

D

C

Could leave your car running or the truck the truck is on rubber tires? So it's insulated.

B

C

If you're near the road you can, you can have the car as your expert battery.

B

C

On the next slide,.

B

C

The survey layout so we're just on page two now just a second page.

C

So this the background picture here is a picture from Canada where we had very dense trees.

B

C

This case, we hire line cutters to cut the trees, to make about a one meter line through the trees.

B

B

C

Have to take into consideration what the conditions are like for, where your line is going to be the.

B

Blonde man want swimming lined up, but lutein in Michigan is another one. Tasted nice so.

C

In the park nice and clean quick, we can do it.

B

By myself I watch the exam goes beyond us, but.

C

The park does have some problems because there's concrete some places where we may want to put stakes.

B

C

We'll do some things to adjust for that.

B

C

Best, if the lines are pretty straight very straight.

B

Line II I kept up leading the Alma, but.

C

If my computer was working, I could show you that sometimes we snake the lines a little bit.

B

C

Just have to remember that when you're doing your interpretation.

B

We know that I did some.

C

Software packages can allow you to have an x and y remember how we were setting Y to 0 all the time. Oh yeah.

B

See little bit on it one week, X.

B

Y Z and time you know some.

C

Software allows you to have X&Y very.

B

C

Here we're maybe trying to see aquifers as deep as 70, 60 or 70 meters in.

B

Oneness, that means a lot um I see that yeah another. So.

C

When we design our survey, we want to try to see about 20% deeper, to make sure that we see the 60 meter feature that we're looking for.

B

Yeah I'm, not she didn't.

C

E

B

Target is 16: oh you're not gonna meet that top side. Look at my mess. Oh yeah.

E

C

Adopted as I know, Amma I would design to try to see age meters deep by using the spacing.

B

So basically you don't have you know pony see, we does just said dining out because I know Oliver we're not saying whatever measurement so.

C

You can adjust the spacing of your electrodes to make sure that you have a long enough line to be able to see 80 meters just.

B

A medium okay, oh my leg, there.

C

Are two pieces of software that come with this unit pieces of software.

B

To software packages that I live so in the mule bond about it.

B

C

Have noted some of them on the computers I know and I will go through those later, but they're on these sticks. Thank.

B

So what do you think it might oh honey and.

C

So you can load them on your computers and.

B

C

Will practice with them later no.

B

No give it a makeover.

C

Then the one package helps you design, a survey sequence, my.

B

Fish declutter aqueous table a sequence for sequence, leader, a little charm and I, fed them to charmless your design. Will you be me.

C

And so a sequence is a set of quadruples four electrodes.

E

B

Lay down the mummy.

C

E

If we're doing a winter.

C

Rate, we would have four electrodes and we would tell this system to turn on 35 and 38 and inject a current, and we would measure the potential at 36 and 37.

B

I really don't miss one example. Maybe my man was an anatomical komachi any time so.

C

The sequence that we prepare preparer will be a M and B lists of four electrodes that we're turning on for current electrodes and measuring potential electrodes in.

B

A be covering equipment me and my me, so that would be a winner already.

C

For a dipole-dipole would be ABM and.

B

That would echo does an ATM engine.

C

So further on the survey layout trying to minimize elevation changes.

C

Surely this is the ground surface any weights me. We.

B

Could have it flapping? Maybe you need hobby, they will give Jim tension ma. We could have.

C

It gently rolling like this.

B

Go Nia go Nia technique. If you name you.

C

Can even handle you can even allow to you know coming down a cliff like that.

B

Sorry mm you can but.

C

Don't put anything here, put an electrode here and all knocked over there here, because the software were has is very difficult to interpret that sort of change.

B

Hello, uni I'm user, now go home on the town I'm on dad my the talentino. So what I don't know it depend of? Wouldn't it came in so.

C

Minimize these abrupt variations when you decide where to lay your life lining.

B

Of the mess another routine, I Marconi question in this town, we don't merely a company, they tally, which we build up in a short time.

C

Right, we have a page that is a daily field report, page that we will.

D

A

Let's have an idea.

C

Oh I know I just meant to you be filled with one of the most important things for geophysicists to do is take very good field notes, phenodb.

B

B

C

Like every good scientist and engineer, you don't erase anything.

B

You don't wait anything.

C

So you should use a pen.

B

C

A field book is easiest rather than just sheets of paper,.

B

C

Don't know whether you have field books here or not equal to, because these ones are right in the rain, so you can write in the rain.

B

B

C

Not that we ever work in the rain.

C

But one thing absolutely you do is draw a picture of your line on your paper or in your field book. So.

B

These people might be by my beloved right line, is gonna, say thought of how Nick will close wait ha and.

C

Estimate the elevation variation between every single.

E

E

C

If, if you don't do a good job and there's little wires, sticking out.

B

Okay, that got 1,000 Ryo internal Eggman.

C

Then you are the one that is going to suffer.

C

So that's this topography needs to be estimated, measured and recorded.

C

We sometimes use GPS GPS now minute as I know, if it's an active GPS for elevation, but do the elevation for GPS is not very good. It's better horizontally than it is vertically.

B

C

B

C

Gps is more accurate, horizontally.

B

C

So you're better to estimate the elevation difference unless you have huge changes. Okay,.

B

That young yeah.

C

I know how much she.

B

C

You want to extend the line further than let's say the 710 meters or, if you decide to run it at five meter, spacing and it's only 350 meters or 355. If you want to extend the line.

B

C

Is a procedure? That's called a roll along roll along.

B

So that person says because she got it where.

C

You move one cable and extend the line, keep.

B

It cool, oh, you know they made and.

C

You can keep on doing that.

B

Hang out, what's that be sellin bammy to.

C

Make a longer line go.

B

Brush it lay out and I'll.

C

Show you how to do that with the software a little.

B

C

How do you make sure you get good survey, data collection.

B

Yeah Gunny he died. He died. You felt oh yeah, so some handle on this.

C

About remember our RS check bar water bang mistake in further.

B

Arrests check it out doesn't seem, cheap machines are check them out and I check. You Deb, you know you tell a nipple rusty up, see you in home, see ghetto Gianni, so.

C

You want your electrode or your RS check to be within two orders. Ideally, so that is so. Two artists is 10, squared 10 cubed 100 to 1000 tents, quitted. Thank you.

B

C

10,000, pardon me and.

B

C

C

Water, you can see I've got ten to the first ten to the one to ten to the third or even ten to the third contender. The fifth.

A

C

Does everybody know when an order is.

E

C

You wanted to be within two orders.

B

C

If you do a survey- and let's say all of your RS checks are in this range and one of them is.

C

30,000 you're going to have some trouble with your interpretation and your injections or injure measurements.

B

In traditional ad, the injection takes that Munna, what's on a tea container, violets what to say, I'm a that the Tommy, Township and I miss it.

C

So if that one's showing 30,000, you have to try to do everything you can to reduce it into that.

B

She may be so naughty nurse who can check live on me? Don't you be a fool.

B

C

I have done surveys in dry salt underground, so uh something.

B

To look at whatever I'm team, mom, I'm Yama, ah sorry she needed me I'm new mom.

C

Where the RS.

B

Has been very high, RS a Miami today again.

C

But because they're all in the same order, it works, get.

B

That goal.I range never seen me. This is not Cindy table. Yes,.

C

Another we got it it's harder to get current in for the system. It's difficult, it's difficult to inject high currents, mi.

B

Got a common time you take one that can't kick there. Is he now.

C

But this this is a very resistive environment, so we see further.

B

Resistance, the immune, but.

C

You shouldn't run into that here in Myanmar.

B

C

You should be.

E

C

B

The town needs the bounty, ja, ja, mama, maybe occasionally, oh.

C

You don't get to look at the picture. The baby diaper in big picture.

B

C

We talked about making sure the electrodes are in hard nacho.

B

Got little time kinda capable enough yeah, we.

C

Can check the wire connector? Why.

B

I panicked at it. Let's check you out, man, bang.

C

The hammer in more bang.

B

The electrode in presidential divider within the temporal get out of but.

C

In very difficult conditions on surface, you can just put a piece of metal into something that is saturated, so.

B

I'm, a boa and I name, any type of momentum.

B

C

Could use salt yah.

B

C

Can use drilling mud.

B

C

You can use baby diapers.

B

C

The plastic off.

C

And we have used all of those in surveys that we've done.

C

So then the next slide is keys to good survey. Data collection.

C

So take care of your equipment, so you know it's working.

B

Wait think will you Sammy, oh I, don't know, let's see I'm at the MA and check it before you go.

C

Out to the field.

B

Be motoki be missing any time check them in.

E

C

Are ways to test to test your switches in your connections with this unit in turtle to the unit come.

B

On the 90-day takes that movie night and.

C

Who's ever helping, you teach them very carefully about the fact that they have to pay you for a beer or a beer for every time they step on the cable.

B

What the name, the Ottoman so I'm available time, here's a table written is everybody because.

C

This cable has 36 very small wires inside those are.

B

Tongues, why is she so.

C

For itself, if you have a road somewhere that you're working on and you have to cross that road.

C

You should use a pickaxe to make if it's a dirt road to cut across just a very small channel.

B

C

Put them through culverts under the road.

B

C

If a vehicle rolls over it, it's not going to break the first time, but it may break the 10th time.

B

C

We never drag these cables.

B

C

Always live down, you can stretch it out a little bit.

B

C

Has a Kevlar thread that goes from this end to the other end.

B

C

B

C

So it's very strong, like fiberglass.

C

There's a very strong thread that goes from this end. To the other end, click.

B

On the Betsy global chat available so.

C

It does have some strengths this way.

C

And as I said earlier, you are better to do the coiling of these cables once you've learned how to do them.

B

One-Nil, a VW, don't wanna, give way. I will pollute, love, others well, TVB's on it and.

C

You want to have good assistance if you're going to teach them to do it, because it's very easy for this cable to get twisted up inside. If you don't coil it properly,.

B

B

B

You can make when I talk about is with it, but they not baby mama yeah.

C

And you'll see that as the age they start getting twists in them, so they get figure of eights incentives. You have to try to roll those.

B

C

Then finally, protect the equipment when it's raining.

B

Movie on its, he must have any setting.

C

Often, what we will do if it's raining out we'll get a plastic bag like this.

B

C

Tear out the bottom corner.

B

Fine okay I, give up then.

C

We'll stick this through like that inside a tie game and then the box goes on and we have a plastic bag on the other end, so everything will be inside the plastic bag.

B

C

Make sure no water is running into it if we employ an ATM.

B

C

Brought ten rolls of electrical tape.

B

C

Will leave that stay here? Am.

B

I talking behind it and.

C

That's what so, when we coil this, we use electrical tape or rope, probably better rope here, because it will last a long time.

C

So now we're on this page here steps when you're going to do your survey.

B

I mean of the homonymous anybody you.

C

Decide what your spacing is going to be, and you later know.

B

So here the time I my best love to love me that well not like that. You don't name so if you were doing a 10 meter, spaced layout, semi down Spacely I love, my saying you.

C

Could just lay out the cable, because it's 10 meters, this.

B

Made me die mr. Rose, you gave me a topic dining with any dogs, a mini, newsroom and.

C

Then banging your electrodes.

B

And every time in tell you, man and.

C

Connect it up, but if you're doing a different length or a separation spacing you're going to have to have a tape measure, a long tape and like we did yesterday, lay it out by measuring. Let.

B

Me does that mean actor who ate them as a talented time in LA and B. You are there man what news of young young space will change? Your look more events, I know, but we do what we do do la me, but I am a to Armenia, charming.

C

So, in that case, you'll bang the stakes in first and then you later to cable.

B

I think you don't know MA and you'll.

C

See tomorrow, we'll take the extra coils and just leave them to the side, one side or the other to have the taker it's connected to the electrodes.

B

C

Now you have everything hooked up. It's all hooked up to the unit here, I sent.

B

It APB lived with one humming and.

C

Maybe before you went in the field, you loaded the sequence of that in a sequence of electrodes that you are going to.

B

C

You'll, have your file and you'll. Have it loaded we'll look at these files shortly defined ANSI? Let me this unit will store 13 different secret spouse.

B

Attainment WAP I was too nervous or a sequence to phone you, but the best sequence above you I.

C

Don't know how the manufacturer decided 13, but they did.

B

C

You select the sequence that you want to put in ms.

B

Sequence will give a photo sequence: the bomb is without you eat me, Yami, Fatima and.

C

Then you do the RS checked like we did RS.

B

Check team, a yeah look at the view.

C

Then there's actually an RS check button right. There.

E

C

Unfortunately, the manufacturer doesn't allow you to stop the RS check, so it starts at electrode 1. Then it goes through 272. Well,.

B

Let's check what they come at wah yeah, big, yellow late, yeah, yep, Oh Nick will move a doggie Sega, the one, the electric wanna slow, stop konasana cool to block cookies down.

C

The way it does it is it Texas Chuck's the resistance from one to two thanks.

B

About two seconds, but no seconds at it, you got an eighty two to three, a bogey three to four I love. You, though, out the poutine they take. Take me to our risk without tech line and.

C

If they're under infinity, it just gives you a number, then that.

B

Buddy is a cool appealing.

C

And if it's uh yeah, if it's over infinity it stops, it goes. Click click, click, click, click click it keeps on trying. Oh.

B

Yeah I'm gonna die quickly if you're kidding about it. Let's.

C

Say this was infinity here any minute. It wouldn't go past that.

B

C

So you have to push a button to make it as hasta and in your field book you're, going to mark these down.

C

When I do sometimes is I actually take pictures of the screen.

B

Bum, you know by lonely: did she like this screen? I love you if you do that simple.

C

There's actually a picture: this is a 10 channel system that we own.

E

C

How it appears, that's essentially how it will appear on this one too, but you'll only have one or two.

B

Lines like my alibi, she, my mom. Well there is this resistivity with check your calendar, so you see.

C

These are all good there between 3 and 20.

B

Levani gonna say: yeah, kill you, okay, so yeah I, gotta, say now.

C

E

C

I go any further if something happens and you're not able to load your secrets on to the system. Okay,.

B

That's the sequence code logged in look at me, I'm, so yeah, maybe.

C

Your cable has broken or your computer's, not working, hey.

B

That could be John I, don't know dynamo, keepo, gotta junior, not yet now I see Ben. There's an internal.

C

Software that allows you to make a sequence file.

B

Sequence by local jet Emma Internet software pilot, so.

C

That's when you improvise and you collect the data set, that's close to what you.

B

Want so LM on throughout the dyadic I lose anything at any zone. Bb new using.

C

The internal system here Bobby.

B

That's the Stefan.

C

So you've checked your contact resistances. If they're not good, you've gone, you've poured water over the electrodes. You've changed the connectors. You've hammered it into a different spot. You might have to pull an electrode move it over. That sort of thing to try to improve.

B

B

Alumni know in the ashtray legality, damn you know about your body and.

C

Make sure you record any bad electrodes ones? You can't fix.

B

C

Times you can start your survey and it will keep on going past bad electrodes.

B

It's not mean Lupe's donate my family, Network and.

C

Then you can remove those ones in the software after you.

B

Know my little go somewhere yeah and.

C

Occasionally it will stop and you need to have somebody there to restart it. Then.

B

I get that day because I didn't get out gamble. Mabel do I have to buy so.

C

Now, finally, the other steps that are on here, you connect your external battery. If you're going to use it and that's a little switch here that goes between the internal battery to the external barrel,.

B

Of is about it and about 500 days ago Internet at the time, our body, but we don't wanna, keep a few extra mana.

C

Greater it int internal extr, external.

B

I bet on them about my back with that. You.

C

Have a set of banana plugs to a big alligator clip that goes onto the battery.

B

Battery unit by men, but no indefinitely so.

C

Then you start your survey with start/stop name: it watch it for five minutes. You can see the data passing by very quickly how.

B

Many knots like did I, go down a man.

C

And you want to see that your voltage, your VP, is in the millivolt range that is not zero and that your current there's current going in it's not zero.

B

Correct witness is the daughter of David of it, both a school, a I'm, a peon and I have genius enough and.

C

We can look at some of those numbers later as well.

C

The next one is too pretty.

C

We go for another five minutes now and then take a break since I'm, seeing some blinking eyes.

C

This is that example, and I was talking to you about where you can see that there I don't know. If you can read that you can.

B

See again, our own.

C

Janna 555 kilohms.

B

Yeah, nothing I.

C

353 kilos, yeah.

B

C

Know but we got very good data at this thing again.

B

Daddy, daddy yeah, buddy.

C

B

Array types Iranian, both Emma.

E

C

Advantage that we found to the winner array is that it works in most situations.

B

We're now reenter of lieutenant governor Emma occupy it.

C

Puts in a big current and makes the potential voltage difference happen in between the electrodes, so.

B

Let them the cool voltage Union.

E

End the day you.

B

C

The winner Schlumberger array, as Doug, was telling you.

C

So you have your a B.

C

You change the spacing of the a B, so you keep on expanding the electrical current and you can leave the electrode MN at the same separation.

C

Oh okay, sorry I forgot. This was a yeah.

C

So there's a separate a B, so the blue, a B, would plot deeper, and this is just an estimate. I forget is a D over to Letterman what so they just estimate and you plot up a plot. You know that the farther apart the a because the deeper it will be.

B

A baby and II gave you yeah it'd, be a lot. We've got a name, yeah uh Ramayana is around looking at it.

C

And when they be are closer, then it's a little bit shallower that data.

B

Point so a net be an attempt already clean line or a technical. So.

C

This one that you saw from your modeling is looking deeper. The.

B

Thousand remodeling module mean Monza, a pogrom, I would pull the animals and you went up.

C

There is also one called the reciprocal Schlumberger.

B

C

Tell you in English we have just as much trouble as Agra did they're saying Schlumberger, it's very difficult word to say: okay, reciprocal!

C

A

C

C

So now you're putting the current inside that.

B

Current book at em on honey.

C

And we use that a lot, because we have a multi-channel system, ten channels, if.

B

You don't want multi channels, I say, go, bot is wrong, I'm gonna do throw me out. It is our only.

C

So a typical winter Schlumberger with 72 electrodes, might take an hour and a half to.

B

Collect that would read well, there's nothing to dinosaur off when.

D

Astronomic our anus or not the.

B

Night with all night at SAP HANA, the reciprocal.

C

Schlumberger can use the 10 channel system and do multiple measurements each time it injects a current.

B

Tension on it, I mean I got it so.

C

It can measure these ones and these ones at the same time,.

B

Let's say they, my bank and.

C

You can collect it in a third to a half the time, so it would take you 30 minutes to 40 minutes to collect instead of.

B

An hour to have.

B

C

Just letting you know that, unfortunately, the two channel system doesn't make the reciprocal Schlumberger happen any faster. Is this Poochyena Chucho each.

B

Other a ton of these of you old mr. percolo Jeremy Obama, the attention.

C

Of Miami State.

B

Was that the way out and.

C

The results from this and the winter Schlumberger are generally about the same.

B

C

They're aboot the same results.

B

C

Two-Channel does allow the dipole-dipole to.

B

Collect data faster talk about that, would you we have already two channels? Aha,.

C

So you're just a bee. You can measure again two channels at the same time and the.

B

Mn will end at China.

C

And this system.

B

Does do that he's this dammit I look beloved about it, everybody so.

C

The only disadvantage to the dipole dipole is that when the MN got too far away from the AV, the current is much weaker out there. So the potential voltage is much smaller. Oh yeah come.

B

On out devotees gallo about Salazar but governor, we wanna cut that off, but I'm a lawyer. What we our needs are coming.

C

So it would probably not give you as good data if you're doing 710 meters- oh yeah,.

B

Only I need to say no, my so you know what, if you're doing half.

C

Of that or less the dipole dipole can give you good results.

B

What a miserable that Barack Obama! Does that mean anything to say these are no go bro Oh a lot of people.

C

And I was talking with my colleagues earlier about the different offices of the company that I work for a gold or on.

B

A little gay accompany my young immaturely, but today so.

C

To make a comparison to Myanmar, my colleague in Mandalay likes to collect winner, my colleague in Yangon, likes to collect reciprocal Schlumberger me I like to collect winner Schlumberger. Don't.

B

Mind just doing one.

C

B

Me Maduro, don't worry, I take I, read everything down when everyone.

C

E

Should I tell you what I know when I do I, don't know what I'm strong as I tell.

B

You eligos anyone huh so.

C

Actually Mandalay is like Toronto in Canada and again Toronto new-build, annua, yeah, a dipole type or the reciprocal Schlumberger is our Calgary office and then I'm from the Vancouver office. Gazeta.

B

Then the answer yet yeah fee dionyza but doing down so.

C

My advice to you is: if you only collect one data set, it will be winter Schlumberger. They.

B

Wanted us that you messing up we're not so much I and.

C

The software that I'll show you, after the break, allows you to make up a winter slumber, take a break for ten minutes and drink or whatever men.

B

B

E

C

Just debating whether to shoot this one there, we not show this one I think it'd just be too confusing.

C

I'll say that dipole-dipole.

F

C

Of you say that the winter and winter slumber here at the same, but in fact what we find is that well the wetter summers a gives you. You know, surface information.

C

The way your focus is, this is oh.

D

Well, you know what these are, the things that we.

C

Know the sensitivity you see that it goes to the.

C

Thing is once you start playing, this is awkward Oh.

C

And they can transfer this file.

B

How did you go.

E

E

A

The championship.

A

Contact between.

E

C

When it's complaining about systems windows.

E

C

Can you ask if everybody has.

B

Somebody nobody notic her yeah yeah. We got it.

E

E

C

We can press on.

E

C

You have to include the dashes.

C

B

Appear I realize that's the bomb.

C

Include the dashes.

E

C

Don't have to endear any of that.

E

C

F

C

E

B

Anybody not have it loaded yet I love with me on su yeah, yeah, mijo I'll bet at the better back. Do you need help.

F

D

Me one morning, so we.

E

Were having these capers.

D

Out for getting your models, I have one now.

A

C

D

C

Show what I do.

E

C

Good okay, can you explain.

E

C

Come on Tina, listen up so that you can get an icon icon, go in your taskbar for.

B

Them that's why I am which is textbook.

E

B

The electro any wait.

E

E

B

E

B

Click right, click and then choose.

C

Well, I've already got it, you will have the option of pin to taskbar I've already got it. Oh yeah.

B

Pindos text into task for pain to test volume.

C

So because I've already done it, it doesn't show well.

B

Looked happy now look tomorrow morning that Amara Polina.

E

C

It right there, okay.

C

So that's the icon of electric pearl on the taskbar.

B

A

Body: let's go get a 6 7 6.

C

A

C

E

C

Everybody understand.

E

C

Start from where certain? What is start from, where you are.

C

Hey everybody: let's go out.

E

C

Let's press on.

B

C

Just stand up: no keep that on there put it back over. This is how I collect the short wires. I collect the short wires and I put them over my head. Just like that.

B

C

E

C

This with the software with the interpretation software, you will be able to produce what are called sensitivity, plots.

B

C

B

C

What areas of the half-space are sensitive to the survey that you're doing.

E

C

So with the dipole-dipole.

C

This area here beneath the electronics is there red is the area that it most looks at knowing you might have earned my.

B

Turn around a neon will go up, we're gonna cheat on me, I, don't know! Yes, you got pool with Wyatt day, I don't give up and.

C

It doesn't see the blue areas, yes well yeah, so this is the winner of race, of different types of winner ring we're.

B

Not reading on it, but when I read whatever you can I really love me. The winner ring is very good at looking at horizontal layers horizontally over guy you're, giving me one huh hello.

C

B

Antique about it and.

C

What we find is the winner of Schlumberger is a little bit better at looking near surface for horizontal and variations honey.

B

Some time variation, my dad luck, you got, it did ya, go to the pound. What would be neither did David I am paneling example. So when.

C

We're looking when Doug is looking at some of the software later and he will discuss this further. But now.

B

He will do and.

C

If he's not nodding his head well,.

D

C

I mean, knowing you had say: yes, I will so everybody has done this hopefully, and if not so, the license belongs to this system to this software. That was what what has been given and it can be used on as many computers as you want to use it on.

B

Nobody honey go down yeah and.

C

There's two field: computers, one as a backup that go with the system that have all of this software loaded on it also.

B

C

Who's ever collecting data can use your own computer or you can use one of the field.

B

Computers become down in the Attic, but I'll go back one day. They dial thing with that, though me out in the.

C

Field computers are both a little bit tougher than the average computer they're called Panasonic Toughbook.

B

C

They'll take a little more kicking around.

B

Taking walkie Goa, so the name you want to know think I need to look kind of what I think I kind of have anymore.

C

But still take care of them and their batteries are not brand new, so they only have about one or two hours of charge. So.

B

There's any time I hang on yeah. We eventually you got it did they hope their cars out, the 99 other can network, but.

C

You you can use them to download sequences and upload data.

B

Sequence, the abdominal map- you know these are up, you look lovely on it and the.

C

Down road pins on here, I'll show you tomorrow as well. This is one USB USB pocket and that's the second backup USB.

B

Yes, maybe might not loose about the Yeti and.

C

There's two cables just in case.

C

And this software, if you lose it off, your computer, can be loaded from the iris website. The.

B

Subway local month, yeah, obviously iris website name so.

C

You can put it on anytime, you just have to Google search iris and the site will come up.

B

Because that's my shop, you know.

C

So creating a sequence: here's the sequence, design. You have electro Pro on your computer. You can follow along.

B

Tv st. does a VSD quest. Buddha's I know me yeah Bobby, so.

C

There's four main screens on electric probe: there's the creation.

B

Creation, cement of Labor Bona basement the configuration, configuration and viewing.

C

Your sequence, you wings, I, see that as a graph and I'm.

B

C

The spreadsheet, especially.

B

Anything about it so.

C

I'll just cycle through those that's the configurations.

B

Are many iterations cranial come on it.

E

C

The viewing graph a given graph day- and that gives you the spreadsheet.

C

C

So this is how you create your grin tomorrow. We're probably going to do four meter spacing maybe.

B

C

So right now you're not showing very much on your screen. Do everybody have electric or running let you grow.

B

Young, maybe not so, choose line line you know and then hit next.

E

C

In your X grid spacing we're going to use four meters.

B

My spacing before me doesn't mean you got the moment spacing so enter.

C

Four here in my name, you get a body we're not offsetting. So that's zero, see the bottom on zero becoming and we've got 72 electrodes. You.

B

Can place that in or.

C

You can just hit the arrow, but.

B

Andrew well better than I've ever got me out of those.

C

You're, probably showing at 28 just click the arrow to go to 72.

B

C

Everybody good with that yeah now choose automatic grid automatic quickly, move out and then create grid create great depth, and now you should see well that got the wrong one there, but just a second.

E

C

Now you should be 0 for 8 from them except Roy, and you can say you can go along and see that it goes up to 200 84 meters for.

B

The 70 now, if you know oh yeah, she says she's gonna be like thank you got it. Has everybody got.

C

B

E

C

All good yeah, okay, now we're going to the configuration screen, think of regions bring.

B

The buds about it.

C

So you can choose a name that you want to a monkey.

B

Eating them a yeah buddy we're going to do a winter Schlumberger, no one else. Unless you're a little man.

C

So I've entered winter Schlumberger, WS 72 for meters.

B

The SMA need to quote me: definitely they did hide through narrow and.

C

Actually, the one I have right now here is the vertical electric still sounding zone.

B

C

Have to have to reload the vertical.

E

C

A look and see what.

C

So choose one: no Schlumberger you'll see you have all kinds of choices there.

B

A montage about it, you got anybody named the window, stern, I'm, a job get anybody see.

C

There's dipole-dipole all kinds of poles: Wenders bumpers. You.

B

Won't need that for camp BES ignore.

C

The VDS, that's the vertical electro sounding we're going.

B

To need the elbow me.

C

Like body about it, yeah I'm I am we're going to do a vertical electro sounding with it tomorrow for comparison, yesterday's.

B

Never done it, you might have got something.

B

C

Going to do just a parent resistivity, not IP, so we just choose rope.

B

Row Bend on my man, you know.

C

It's always a good question: what to do for the time, so nothing.

B

But that budeau VNL me that maybe one found anybody if you have time.

C

Then I recommend you use 500 milliseconds, which is a half a second. For me, more thank.

B

You guys no you're, not not yeah, maybe second Oh.

E

C

That's a half second for each injection period. That gives you the best data.

B

Hello did that bounce on beta at a dot. It's like that wet.

C

Ball, you can go as low as 250 milliseconds if you were just trying to do a quick survey and you're willing to sacrifice maybe a little on quality. Well,.

B

I, do you own a demo, we're not taking short iron body sano Miami needs that cancer, not Cindy? Why or.

C

If you're late in the day and you're supposed to be home for supper, gonna.

B

Be honest, I will be ya, know me, so you know there and.

C

It's time to get into the field, then you might choose to do 50 yeah.

E

C

The longer ones are more for IP one second to second for second.

B

C

Different practitioners have different ideas about what quality of data you want to collect and what your stacks are. Does everybody understand what a stock is? Six of my let me live.

B

It SD SD, SD kissed dead, do.

C

You understand this: where the stock is, how many times you collect the data and average.

C

So if you're in a very noisy environment, where there is a power house nearby or it could be railroad tracks, electrical railroad tracks.

B

Okay, yeah meats in India tianyu, we happy said the only thing. Oh yes see you top the wallet, man Anita honey. We mustn't, bully and.

C

The ground currents are varying very quickly, I thought.

B

The community, you know buddy, yes, he's on a table, yeah Lee Jeong Hwan. Do we have effective team? You know me, then.

C

You might choose more stats and it's thankful. We don't mean oh yeah by there and so that this automatically goes to 3 and 6. On your.

B

Computer, if you have an only child um I think we did junghwa. Do you know.

C

We typically change it to 2 & 4.

B

By mommy there.

C

This is the queue this is a quality measure, while quality measure. How much difference is there in the readings it's taking. So this is a standard deviation and.

B

A standard deviation of young Malaya and.

C

We do a lot of work in in noisier environments, so we sacrifice some quality to be able to collect a piece of data. A data point.

B

So quality good yo man, I ain't s, di Bao, I gotta, take Islam and honey back. So we.

C

Tend to use this number as 5%.

C

You can set it at three percent or 1 percent. So with the debate tangling a body or if you're in a very noisy situation, then you might choose a little.

B

Bit higher, it's.

C

B

To me, anybody's ready, I think they thought you might say. No, you come Union about the old tap occupy, so the.

C

Way this works is it injects a current, both Corrections and it's always measuring always measuring it. Averages.

B

Immunity, no man or women, st steve mann, where maybe use a doctor go tango, may be averaged Ogami. Then it does another cycle, not that that's not another to go. Get my man same thing again.

C

Diamond and then it looks at the standard deviation of the average data that it's been collecting average.

B

The diorama, meticulous tentatively, single drug yeah me and.

C

If the variation is under the cube value, you've chosen among.

B

Eight variations already, you know you had it never would even Obama back.

C

So this was a stack of one that one step. This was the second stack, an elastic bar in this case, if those numbers are within 5% of each other. It moves to the next wonderful.

B

So any five percent buyers- another kuqali I- came in online and if it's not.

C

Then it does two more just for stacks, so if it's not under five percent, it goes three four and after four.

B

It stops 5s that moment ago, three to four down water. That's that guy so.

C

Each data point: if it's doing a stack of two takes about six seconds.

B

Let's stick to crude, you know, you never know stuff the kind of town using that half second and I thought the I am like the meanies. That kind of night I thought. If.

C

It goes to force tax, it would be more like ten seconds.

B

Four sticks are not stay, is the count on me so.

C

If this number was six, it would take thirteen or fourteen seconds.

B

Hey number a month, events house or not, except also against at least the kind of tower and.

C

We're doing several thousand measurements.

B

Deducted in a bombing, so you.

C

Can see that you have to decide a balance between quality and time.

B

Saddam is rock quality.

B

C

Everybody understand that so the numbers that we use most some of our practitioners, the ones that are in Mandalay, use three and six. Some of us use two and four.

B

Well, yeah I told ya, so look at you return it leave knowing it. You know.

C

So you have several ways that you can control the data collection, the.

B

Collection of control- oh yeah, Dunedin, it nice- you are a if.

C

You have a low battery or your collected for a long time. You can use this save energy, no.

B

Thank I don't, but we have got. My name is on the state penalties or a vocal. Tell me about it. So.

C

The machine will automatically control how much voltage is puts in, and it will keep it small so that it's measuring what it thinks is a good value. So.

B

The odds are out of state and is he new enemies on a couple of energy terminus at the retreat a little bit? uh No any book. Are you.

C

But we find something that saves the battery, but we find sometimes that it sacrifices the quality so they're.

B

Not safe energy like this on there, but you got your table, you don't even have a quality monitor so.

C

We use this 50 millivolt setting.

B

Millivolts that dominate a mom and.

C

That's also recommended.

B

By iris, iris got that I was gonna.

B

C

What the system does automatically is it measures your MN and it injects a voltage that will give you at least 50 millivolts.

B

C

Injects it current, it objects a current that will give you at least 50 millivolts, for your VP.

B

So now that BBC mvg.

C

You can choose your maximum a B voltage based on the system that you have. This one will put 600 volts in, but.

B

um Yeah so typically.

C

I would suggest that you set this at 600.

B

Tell me on up number 4 mm um yeah. No, she didn't inaudible our take now they didn't tell me, oh yeah, ask you later so.

C

What that means is, if you have a very difficult current injection and you're, trying to get that 50 millivolts of potential voltage difference.

B

Okay, Go Go, Go I, understand.

C

It will go up as high as 600 volts for the injection hey.

B

Buddy, how many initiative, and that.

C

Could drain the battery faster, but hopefully you have enough batteries to keep the system running for the day. Any team of our.

B

Economy indeed, Oh watch me nickel. Oh thank god. Whatever you don't love, she managed it on the other body, but you.

C

Know maybe, if you're on a really hot day, where it's 45 degrees or.

B

So these thing I think was enough. She did need you reminds me, you.

C

Might choose to make that less a hundred, volts or 200.

B

Volts I, don't think miss or not. They have the money out. You can have a new body and.

C

Especially if you're running a shorter line, if you're, not 700 meters on.

B

The other 300.

B

C

So if we're now set that at 600.

B

Because that's what.

C

This system is capable of doing.

B

C

Now, with the dipole-dipole you can actually choose, this can actually go to two. That's the number of channels. It's going to use.

B

C

The there's a dipole-dipole, so you know it's a dee dee.

B

Dee dee's with all that, together in my tackle tables, and so it's going to.

C

Use two channels: that's.

B

C

Domain to do the data collection- that's the Applejack, but I'll show you more about that later.

C

So when you choose one or two umbrage, a when I step into our new you, this.

B

Automatically becomes.

C

B

C

Do my did once thought about it? You can try to change it now if you want to, but you won't be able to.

B

Say it's time you know, take giant bug will take me out again yeah the eraser anything about Michael in your ball good.

E

I was are not Nick and they're.

C

B

Setting car we got.

E

C

This one says: use gap-filler, quadruples, gap-filler, quadruples, fine applause.

B

C

The dipole-dipole, you can infill extra quadruples because you don't have to stick to the standard dipole-dipole layout.

B

Thank you, mother ghost I would never lay up with Nina I'm shocked your than loonies I'm doing today. What happened she lay on it won't know why we got it down.

C

Here, I'll, just I will show you what I mean by that yeah by me. So.

C

Here's the graph of a 72 channel 5 meter, space dipole-dipole, so.

B

That that book, I was la Viva, la Vida China me when I said Nick time bottom. You.

C

Can see down here and tells you what it's collecting.

B

So a my body at some time, yeah I got it this one.

C

Is collecting 1380 quadruples, but it's only helped me to inject 1500 times, because we're using two channels China.

B

Oh yeah yeah, you know Injection had a cow man and it's that easy. So.

C

It's doing multiple measurements of VP for some of the injections.

B

C

So if I choose not to allow gaps or quadruples.

B

And now, if you don't wanna, get me killed, I get out, it's.

C

Only going to collect 120 times and it wouldn't get as many data points.

C

So I'll show you more about dipole-dipole later that.

B

Would that would not monkeys? I have a minute now we're going to do a winter slumber zoo when that's not majority out your.

C

The question any questions so anything that typically, what we do is we try to inject that a six to eight of these and let's show how it builds up. So you just have to either just try double-clicking on number one I'm.

B

C

This is an a spacing of 1. We know that that's four meters is not one. That's making a all of our electrodes are just four meters apart, a boa keep that want me. The first measurement.

B

We did yesterday.

B

You can double-click on the next one. Nick will name it or you go like this highlight I'm like we thought we adding. Okay, if I want to get rid stay where we are. If.

C

I want to erase those ones I can.

B

Highlight the relevant it's the left of the antenna and hit. Do it, the legal okay.

C

And then, if I just hit, if I like them again, they will go. So, let's see we're going to build up our quadruples come.

B

Down here under polvo, sign, yeah and.

C

This is standard compute, that's the one you use mostly don't.

B

Go messed, have a steady, come to Ronda, left click on that and I won't name it Bob and.

C

It's telling you it's going to collect 496 quadruples Y, just pulled Aleta I.

B

Scored against 196.

D

Injection muscle injection.

B

Win, yes, is the way move on.

E

C

Are a couple of problems?

C

This is French constructed software. You.

B

Gotta be primero de Calipari, some ways around it: okay,.

C

So one of them is how they represent time, the rectangle so.

B

Does everybody have the same screen.

C

Sitting the same thing on your computer, let me never get a straight ball. ah You see the time says: twelve, twenty seven, fifty six.

B

C

Let's join you how long it's going to take to.

B

Collect the data.

C

How many of you work with Excel? Does everybody work with Excel exams mentions.

B

That look at spreadsheets on your computer. Yes, we do what we think that.

C

When you try to format time in a.

B

Cell tango Pullman time is, I mean it so in.

C

This computer software.

B

He's already about that up.

C

E

Although this is known hour.

C

It's equal to zero and.

B

Then what they do is you know this.

C

Survey and it's only an estimate of time because it depends on how much stocky you.

B

Do tech but they look less or a movie.

C

Made of that same like it's only going to take 27 minutes.

B

The manip a yoga ball, let's go universe and agathi noon go pr0 get off so to ignore the 12th suddenly go on me like and it is you don't have to either.

C

So this one's going to take about 28 minutes to collect bang.

B

Boom is that quitting it minute, bandeau body click on ok, ok, we had made a comment and let's go look at the ground backwards.

C

Yeah, so this is the upper layer me up the shallow layers. These are the quadruples. There are only one specie of.

C

Its this out, even this system automatically saves or are they asking to see, yeah, okay, say yes and call it call it the same vendors? Who did you.

B

B

C

Roll, whether they.

B

Whether they to say sleep S is the austin State mess which bio which place you.

C

Choose if you have a new program or a new project, you're doing you can save it under the project and then you just change the directors when you open it.

B

C

That's I never save in his cup, but they can deal with your mind and I would I always save in a folder. That makes sense to me.

E

C

B

C

In a folder that you like.

B

C

Can save it in a folder called max in honor of me.

F

C

Usually call the file the same thing as I name up here. My.

B

Immediate finding was the same as me I'm on the Vietnam a time it find a meal to be done, but.

C

If I have a project that was maybe I would call it small, you mean I might call it ma. Ws 72m aw, another.

B

Monitor project now is enough officer. Let me worry about it because.

C

If you just save it like this, when you go to different sites, you may forget what you had done with that one.

B

Esmond or like an hour.

B

C

You can see that it's estimating it's going to see down about 15 or 7.5 meters, then we've got.

B

A four meter spacing maybe does face. She did so.

C

Then click on the view sheet. You.

B

See put things like bad.

C

So this is the data, that's the sequence file that's going to go into there. The first of the ADA collection is going to be current between 1 and 4 electrode, and it's measuring two to three.

B

Karen got wonderful and thank comma two to three jump on in the current.

C

Plan is going to inject in one in six, so it's starting to spread. The current electrodes are.

B

Thicker they travel at Ogami, so three two pocket on is that gap and.

C

It's remember: this is a winter Schlumberger, so it's keeping the measurement electrodes the same with.

E

C

Potential measurements, the same width apart so and it's expanding the current electrodes members.

B

Are gonna get that down below, have elected back, got it okay,.

C

And it gives you your depth levels and the k-factor and.

C

That will come later. So, let's go back to the configuration think erasing again bob I what I like to do and what they recommend doing is overlapping layers.

C

Let's go ahead and eat so for this one I've chosen to do 8. Oh my.

B

God see Mueller, you need a, we did eight, but now we're going to overlap the later. So the left are telling that one.

C

So this data collection is going to look the same as the one centered down here just hover over.

E

C

See you get this okay, so that's telling you approximate what depth it's looking at when you, when you go over top of it 24 and a half meters, if you just put your name.

B

C

Cursor over top you'll see what it says. Oh.

B

Yeah needs aa, but my senior man I never know she does I've got it so.

C

Let's view that or go down here and do the standard compute instead of computing name.

C

Okay, that's going to take 52 minutes approximately! It's usually.

B

A little while, maybe.

C

huh And then, let's view the graph now yeah so remember how I said it's overlapping. So the greens are the data from the next player over.

B

Left no time to download greeting ended up on my legacy now or from from.

C

Having a spacing of two innings now, so it's a spacing so now it's eight meters should meet that up all right and that just gives you a better data set, gives you better quality, because you have more data in the same place, but now you've expanded your volte or your current injection electrodes.

B

Dizzy's; okay, like that one yeah, which.

C

Should give you a better potential voltage difference potentially.

B

Dates back over about how the BP is on a gamma.

C

So back to configuration, make the racing and bombing, and you can do this- just do it in eight man.

C

So each one we go down is just a wider spacing between the kernel and apples. A bonding agent about lemon and the potential voltage electrodes I should say.

F

C

So see what happens when you get to here and now you have to buck, you thought I'd seen a bow. Is everybody up with me or should I wait.

F

C

Do you see what it says?

C

Maximum investigation depth is not available that.

B

Means, though, investigation got me a no, your honor, that's.

C

Not that's the maximum spread we can get, because we only have.

B

72 electrodes and I must have anything to Electric when she gets that moto d, ta âlâ.

C

So that's as an example for you of how we build up and now, if you choose standard compute,.

B

Then you're gonna do the graph. Then there you go that will have a nickname.

C

So this may be looked at as far as 50 meters, but how's that me ducky. It's.

B

Usually not very good.

C

Down at the bottom and.

B

The half the money they get my bound up and it's going.

C

F

C

An hour and 20 minutes ix.

B

E

B

Dummy, that's it.

F

C

Understand that okay so often and it's going to collect fourteen hundred and thirty one quadruples, but it can only do it one at a time and so.

C

Do it with six now I.

B

Gotta do the overlap.

C

So Doug it's a good spot to stop, because the next step is.

C

E

C

Okay, just do stuff, so do your standard computer, but because we're because we hit it.

C

Because we hit a dead end and we only have four in the bottom layer, I'm.

B

On me, I don't know I often.

C

Will just include all four: that's what you saw there.

B

C

If you go to your view graph, that's probably what we're going to do tomorrow, there's fifteen hundred and thirty quadruples, fifty hundred and thirty quadruples, and it's going to take you about an hour and a half 1530.

C

Okay, so that's the one that we just did is the one that we will collect tomorrow over the same line as we did our vertical electrical sounding and then tomorrow we'll go through how to get that data off machine.

B

C

B

C

And compare it to the single to the vertical electrical sound.

B

Thanks very much for listening to me.

B

D

You guys must be very excited.

D

Why why are you excited I love it because we went out to the park it took. What did we spend three hours? We collected ten data points.

B

D

Were noisy but.

B

D

Anybody, you came back and you inverted those with the app and people got very different results. There.

B

Was that dad at the other two job so.

D

That means that maybe that's not good enough quality data. Maybe you need more data to get a good interpretation so.

B

It's a principled economy, quality colonial just enough time to love this in the world. Okay, so.

D

In the same time that it took you three hours to collect a sounding data max is going to collect 1500 data in less time than that.

B

Yeah Mexico no I.

D

B

D

You saw today how to try to invert the field data using just three three layers: Row 1, Row, 2, Row, 3 and two layer, thicknesses.

B

Don't know if I'll go get it or not receptacle, so.

D

Can you imagine what it's like to adjust multiple layers where you've got maybe ten layers that each have its own thickness and recent images of I? Don't.

B

E

B

Were a mess or not believe all that Kalama you can.

B

D

That actually might be pretty complicated than it both videos who created a member tomorrow and that's the reason that we want to have a way of inverting. The data.

B

Early never involve devotion, look at the lividity occasional water, so.

D

How many people here want to learn how to invert the.

B

Data in box data in fashion love me.

B

D

Your hand, okay.

B

D

Good, yes, okay, now before I tell you how to do this I need to know from you what you know so I'm going to give you a test.

B

The other kind of the what.

B

D

Is a very simple test, but it's going to tell me a lot about what your capabilities are so.

B

You know files or anything my signature, yeah, Pauline, yep, John Senden, a serape neck which I may go and hang it be. My mother, oh wow, oh man.

B

D

This is very important to me, because I need to make sure that I'm providing information to you that you can understand so.

B

That by eating as a little baby, not long enough for me I, don't know so.

D

I'm going to give you the simple test: if you understand what a matrix is and the vector it's only going to take you one minute to.

B

C

One thing we remember dog, you see what it's saying: it's a simple test: yeah you.

D

C

Not agree, yes,.

B

Very simple: what a simple test for you.

C

B

Net Sundance and Robbie, okay.

B

D

Here it is, everybody gets to do this. No.

B

B

C

For your interest, I was going to show you. This I've also programmed up a vertical electrical sounding to use the cables and the system. It will give us 24 points of data, and it will collect in about two minutes to a little bit shorter.

E

Than yesterday,.

E

D

E

B

Might not understand.

E

D

F

C

D

You do that right now,.

B

You asked me to see: okay.

C

Figure it out where you were gonna, make up tonight waited.

E

Around watching.

C