00:00.27 archpodnet All right welcome to the architect podcast everybody Paul how's it going. 00:04.90 Paul Aside from being stressed and harried and busy I'm actually pretty good how you doing Chris. 00:12.73 archpodnet Nice, nice, pretty much the same way. Anybody who is a longtime lister of any my podcast know that I've probably mentioned the reno air races before which is the 1 volunteering event I know right? It's the 1 volunteering event that I do um every year. 00:23.63 Paul Um, just once or twice. 00:29.98 archpodnet With my civil air Patol squatter and this is my tenth year doing it actually and again this isn't really a ah technology thing but ah this article played all over the west coast but there was actually a fatality in the second to last race. Um at the air races this year it's It's kind of interesting to talk about just briefly. 00:41.19 Paul Oh no. 00:47.62 Paul Are. 00:47.71 archpodnet Was a guy who was 61 years old it was during the jet race so he had the speed record for the event of five hundred and twelve miles per hour on the course and yeah, and luckily this happened at the far. Um the far backside of the course where there's no spectators. There was pylon judges and stuff but none of them were hurt but he was. 00:53.74 Paul Good god. 01:06.85 archpodnet He was neck and neck with this other guy. Um, who during 1 of the heat races. There was like a photo finish across the finish line I can't remember which one of them won but so he was really in competition and it's a 6 lap race and if you cut a pylon you get a 2 second penalty. Times the number of laps so you get a twelve second penalty if you cut the inside of a pylon which would have effectively ended his race right? and he was just he got rookie the year last year he's a big time business owner big kind of ego on him and he's just like I can't lose this race I need to win this race just ah, you know whatever so he made a huge rookie mistake of. 01:27.79 Paul Me. 01:41.97 archpodnet He pulled up before the pylon and then turned right and cut across the other guy's path right? behind him in order to not cut the pylon and then he made a sharp aggressive maneuver back to the left doing five hundred miles per hour and instantly lost consciousness. That's what they think anyway, it's called g lock um, ah. 01:58.60 Paul He. 02:01.88 archpodnet What is it? Um, you know gravity induced loss of consciousness. That's what that means? So ah and when he went into G Lock you could see the plane in a hard left turn a knife edge left turn and then it kind of settles down. It didn't settle down into a straightened level. 02:03.59 Paul Um, right. 02:17.22 archpodnet It just was no longer turning hard to the left but it was still knife edge you know with the wing down and it just slowly well I wouldn't say slowly at five hundred miles per hour it it approached the ground under control and then turned into a fireball so it was ah yeah, it was pretty crazy. Um. 02:29.33 Paul Little boy. 02:34.70 archpodnet Just looking at that and and the circumstances around that and you know that's why that's why when you're doing you know, dangerous things. That's why we have safety training. That's why we do emergency training and stuff like that and he just didn't have the experience really to know. Hey this aggressive Maneuver is going to get me back on track but I could pass out while doing it. You know and it was just it was just one of those things you know and it might have been if the if he'd have pulled just a little bit less. He wouldn't have passed out but maybe just like grayed out a little bit and then and then realized but realistically he should have pulled up and out and just take taken the Loss. Um. 02:51.98 Paul Next. 03:06.55 Paul Right. 03:08.74 archpodnet And then you know been alive to race again. So so that was a tragic but exciting end to the to the Reno air races unfortunately, um, and now we're up at Lake Tahoe for the week and and headed to headed east after this um headed to the East Coast in our Rv and oh and we bought a new rv so there's all that. We're dealing with we instead of upgrading every single system on our iv like I dream of every single day we bought one that's already upgraded in every system. So now I don't have to upgrade for at least another two months I won't be thinking about. Ah. 03:43.13 Paul Ah, as you settle into the new one and find everything that that that kind of rubs you a little the wrong way or could be done better. Yeah. 03:45.89 archpodnet Yeah, right, right? It's going to be tough with this one though. It's got. It's got so many cool things on it all the things that I've wanted you know and it's just yeah, you're right though, there's going to be something eventually, but right now that's tough to see tough to see so. Speaking of ah upgrades you upgraded your skill level a little bit the last couple of weeks tell us tell us what you did. 04:09.57 Paul Yeah, so last week I I flew out to Minnesota to spend a couple days with with Jeffrey Jones of archaeophysics to learn a bit about magnetomery I haven't done magnetomery before but um, but I'm going to be in charge of doing. 04:23.29 archpodnet Um. 04:25.70 Paul Ah, magnetomery survey loggosh this fall I mean I'm heading out in a week so ah but the long I'm going to war first and then to logossh and once ah once I get out to loggosh in about a month's time we're going to be you know amongst other things doing ah the magnetomery survey and so. 04:28.38 archpodnet Um, yeah. 04:44.93 Paul Archaeophysics had the same type of system slightly older than what we're getting but basically the same from census and it's a cart-based system and and we wanted to get me up to speed to make sure that there weren't certain problems with you know how I was going to plan doing the ah the survey. 05:03.90 archpodnet Oh. 05:04.51 Paul It's ah it's not Rocket science. Well actually the the science of it. It probably is Rocket science but doing the survey itself isn't necessarily ah but you know how to lay out a grid How to run the transects. Um, what to do if there's an obstacle all that we did and that was basically reaffirming. 05:08.20 archpodnet And yeah, yeah. 05:21.55 archpodnet Um. 05:23.73 Paul Things that I've done before the the particulars were the particulars of the software that we're using you know how to stop a transect and break it or break a field up into small chunks so you could do smaller rectangles within it. Ah, to stitch them back together to to make up the entire thing because you've got ah an obstacle of some sort and then the other stuff that was actually really fun and this was absolutely invaluable was that Um, after we would do some recording and we went to a um. 05:38.86 archpodnet Um. 05:55.30 Paul Were Minneapolis. We went to a cemetery in Minneapolis and did a 50 by 50 in a small corner of the cemetery afterwards. We'd go and sit down and download the data and look at it and because Jeffrey is so experienced and has been doing this for so long. 06:01.25 archpodnet Okay. 06:14.40 Paul Ah, we had lots of interesting discussions about what he would see what the highs and lows meant the the various intensities how to get better contrast and so that you could see what you want to see a lot about the interpretation of what the results were. 06:29.75 archpodnet Oh. 06:32.31 Paul Ah, he's worked all over the world. So you know he had some understanding of the kinds of architecture which is what we're going to be looking for primarily at Loggosh what that architecture would look like how you know burn surfaces and collapses and kilns and all these sorts of things would show up differently. In that magnetomery data. Um, so for me that was where the real value was wasn't necessarily in learning how to use the equipment because I think that I could have figured that out with what I've done in the past but it was the the interpretation and then. 07:00.38 archpodnet Sure. 07:04.65 Paul Not just the interpretation but the science behind the interpretation because you're basically looking at if you start to think of everything as a magnet. Ah you're looking at the North and South Poles and the and the fields around them and and that was for me a novel way of going about it. It makes total sense. 07:14.86 archpodnet Um. 07:22.33 archpodnet Yeah. 07:23.91 Paul But I didn't think about that beforehand and now I have a little bit of an understanding. 07:27.49 archpodnet Well and that leads me to a question too just to kind of back up a little bit for anyone who may not fully understand what magnetomemetry is because when you hear the word you might think well I can only find things that are that have iron in them. You know so things that are metal based or something like that. 07:44.47 Paul Um. 07:45.26 archpodnet Um, but can you give just a ah really quick primer based on your current knowledge of of what kinds of things you can use to what like what kinds of things you can find with magnetomemetry and and kind of how it's used. 07:56.86 Paul Yeah, so I think that it's fair to say that you're basically looking for contrasts right? And so if you have something iron buried in the ground. It's going to be much higher contrast because it's much more magnetically active. Well active. It's in necessarily the right term. But. 08:08.92 archpodnet Oh. 08:15.55 Paul Ah, it's it's going to show up a lot more than the surrounding soil matrix. Um, but that's not the only kinds of things like you said it doesn't just have to be iron. It can be other things you know, certain other metals aren't necessarily going to show up but he had a lot of discussion about ah lightning strikes and. 08:18.17 archpodnet Sure. 08:34.20 archpodnet Um, yeah, yeah. 08:35.14 Paul Finds those quite frequently and that's something I never would have thought of but they do ah when the lightning strikes a soil. It gets somewhat magnetized. Yeah, it's not. It's not ah you know, really strong magnetic. But it's enough that the magnetomery will pick it up. 08:48.19 archpodnet Um, yeah. 08:53.79 Paul Another thing that that we discussed was um was burning because we have a lot of Kilns At Lagosh and so when that clay that's lining the kiln gets heated up and then cools some of the crystals aligned with the ah the earth's magnetic field. 09:10.31 archpodnet Yes. 09:11.67 Paul Essentially then giving it a magnetic north and South in the ah you know like a magnet like a bar magnet in in what you're looking at and then the highs and the lows show up as blacks and whites respectively in the the magnetomery data in the ah in the color rat that he likes to use and. You can use that for understanding that it's different. But also you can use it for understanding what kinds of events may have happened that would cause that and so the the strength of the high versus the strength of the low might tell you something that if it's something that was burned in C two like ah a kiln. Or if it's maybe a bunch of something that was burned and tossed into an an abandoned room. It's going to show up differently. Both of them are going to be are going to show up in the magnetomemetry but they're going to show up with a different kind of signature and that you know I'm. 09:54.86 archpodnet Sure. 10:08.14 Paul Just a neophyte at this but having these discussions with him about the work that we had just done was absolutely invaluable for me and so um, you know I look forward to to analyzing what we do in Lagosh I look forward to working with him again in the future analyzing what I did and hopefully that. 10:16.92 archpodnet Nice, um. 10:25.32 Paul Data collection that I'm going to be doing is going to be sufficiently detailed and spatially controlled Well that that he can analyze and discuss with us what he's seeing and we can use that to help interpret what's going on in the site beneath the surface. 10:35.76 archpodnet No. 10:43.19 archpodnet Yeah, that's really cool and one of the things you made me think of with the lightning strikes because I've I've seen these before in ah in Georgia actually when we were doing when I was in grad school there at university of Georgia I did a shallow geophysics course where we did basically all the popular shallow geophysics methods including magnetomery. 10:59.18 Paul Are. 11:01.56 archpodnet Resistivity gpr all that stuff and there's a cemetery on campus that we actually used as at the time it was being used as ah, you know, ah a testing area for the class so there was kind of a big older cemetery and each semester of the shallo geo physics class which I think only played every 2 or three semesters. Would do just a little bit more mapping in the cemetery because we take we take like the whole semester to just do a little portion of it because we do we take 1 grid square basically I can't remember how big it was but we take one area and we do gpr over at one weekend and then we do magmuttometry then we do resistivity and and during the week we would go back and talk about the results and and stuff like that. Um, but with the lightning thing we did find some of those and those kind of fossilized tubes of fused soil that lightning can create are called fulgurites and I always love those. Those are really cool. Yeah because they look like I don't know they look like if you've ever seen somebody exivate. 11:49.52 Paul Um, yeah, right. 11:55.88 Paul Um, right. 11:56.30 archpodnet Ah, termite mound under the ground it kind of looks like that a little bit. Um, but that's that's super cool and and also you know just to note too. 1 of the things I thought was really neat when we're looking at this older cemetery that had you know these were burials that were I mean anywhere from 100 to one hundred and fifty plus years old in this cemetery so was a pretty old pretty old cemetery. Some of the iron. You know, like hinges and buckles and stuff on caskets they're not really around anymore in that acidic soil but the iron is still there. The iron doesn't like break down in that the iron's still there. It just diffuses into these weird patterns that are just like in the soil now and these experts in. 12:24.69 Paul Um, exactly. Um. 12:34.98 archpodnet This kind of stuff that I've seen that kind of thing before it's almost like they can look at that and their brain just reconstructs it back into what it was because they know what they're looking at yeah they can see it which is super cool. 12:42.16 Paul Um, right? Yeah, it's like ah you know it's like the radiographer at the at the hospital that can look at the X-ray and interpret a lot about it. Ah that. 12:49.39 archpodnet Yeah, yeah. 12:55.40 Paul When you without the training look at it is like well yeah, it looks like a head. Ah actually I want to you said Grid Square and and I wanted to bring up one other thing that that developed out of this training was on the flight home I decided I wanted to plot out. Um. 12:57.24 archpodnet Yeah, for sure for sure. 13:14.26 Paul Ah, so ah I decided I wanted to make a little program so that I could mark on the Baseline and the and its pair at the north on any given square if I could take a cart tell it how many sensors what the width was I could then predict you know how many. 13:23.31 archpodnet Like. 13:31.83 Paul Transets I would have to run and which direction they would go and what the center line of the car would be so that way I can take a rope and I can flag it really quickly. Um, and then just reuse that rope so I can reuse the same thing. So um, that probably wasn't clearly explained I would have to show you but. 13:32.87 archpodnet Sure. 13:43.48 archpodnet Um. 13:48.58 Paul So I wrote a quick little script and what I and I found out something that wasn't immediately obvious until I did this is I said that we use a 50 by fifty meter grid when we were working we had a one meter white cart with 5 sensors on it and so would go up. 13:48.99 archpodnet Um. 13:59.34 archpodnet Yeah, okay. 14:06.91 Paul Turn aroundund come back and so starting in the southwest corner working northward so from the baseline to its pair fifty meters north turn around and come back 50 meters turn aroundund. Go back up so zigzagging across like that. 14:16.73 archpodnet Um. 14:21.67 Paul And then he flagged where the center line of the cart would be and I would just aim toward the center line on each one. Um the cart that we're going to be using in loggosh is the same one meter wide cart. But we only have three sensors so instead of a twenty five centimeter spacing like what we use in my training we're going to have a. 14:33.58 archpodnet No. 14:40.50 Paul Fifty Centimeter spacing between any of those those sensors no problem. Um, but I wrote this script and the math wasn't working I was missing a transect I was missing the forty nine and a half ah meter reading. 14:43.90 archpodnet Ah, okay. 14:53.91 archpodnet Um. 14:57.33 archpodnet Right. 14:59.42 Paul And I couldn't figure this out I was I was convinced that it was a a logic error in my code and so I looked at this for a couple hours just bashing around different things until I realized that what I hadn't expected was that the width of the the Grid square. So. 15:02.68 archpodnet Oh. 15:17.48 archpodnet Yeah. 15:17.75 Paul Fifty meters is evenly divisible by 5 for those 5 sensors that we were using but it's not evenly divisible by the 3 sensors that I will be using so so for Lagosh I had to I had to? ah. 15:26.00 archpodnet Right? Ah right? so. 15:33.67 Paul Modify what we're doing I'm going to either do a forty five meter by forty five meter grid or a sixty meter by sixty meter grid because both those are evenly divisible by three both those are even least divisible by 5 and we tend to and archeology think in five meter increments oftentimes for a survey. 15:41.68 archpodnet Yeah. 15:48.89 archpodnet Right. 15:49.61 Paul Right? You do a 5 by 5 You do a 10 by 10 You do a 20 by twenty whatever those are all divisible by 5 It's not something that if you're using a 5 grit array. You would know a 5 sensor array you would notice. But in our case with the can you hear that wind howling it is so distracting to me. 16:03.79 archpodnet We can I can't hear the wind howing I can hear it now. Yeah yeah. 16:07.37 Paul Ah, okay, good. Um, in our case with the 3 by 3 the 3 excuse me the 3 sensor array on our cart I have to adjust a little bit and I wouldn't have noticed that without writing the script. So I'm actually going to put this script up on um up on my github page. 16:16.31 archpodnet Me. 16:26.83 Paul It's nothing fancy, but but I think it might be useful to somebody else to avoid making the assumption like I had that I could do a 50 by 50 only to find out when I start measuring things out that I'm missing one stripe of my transact. 16:29.28 archpodnet Um, yeah. 16:41.86 archpodnet Ah, Jeez Yeah, well, that's math for you least? you're not launching a rocket and getting the units wrong and you know accidentally setting it into deep space. Ah exactly exactly. 16:49.30 Paul Yeah, not that's never happened or accidentally crashing into the surface of Mars oh that was ah in feet and inches not in meters whoops. Ah. 17:02.70 archpodnet Like how do you make that mistake Seriously I like all the people I have to check it Anyway, we're we're digressing um all right? Well that is super cool I Look forward to seeing how this actually goes when you guys get out there when you get Back. So I'm sure we will. Ah, definitely have an episode about that in the meantime, let's take a break and come back and talk about the primary topic for this show. The Pueblo Grande Village mapping project back in a minute.