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21814
From: Skywise, [DNS_Address]
Subject: 3d quake program
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Finally. I have a working prototype. Image 1 is just a fully zoomed out view. Image 2 is zooming into Alaska. Image 3 is underneath Alaska looking towards the Aleutian Trench. One can plainly see the Pacific Plate bending as it subducts beneath North America. Depth is NOT exaggerated. The data set loaded is all earthquakes in 2020, over 191,000 of them. No problem showing them all and having smooth 3d operation. But then, I do have an RTX2060 in my laptop. I wouldn't read too much into all the stuff on the screen. The user interface isn't complete. Some things are there only for testing. There is MUCH work to be done. But the core program is working. I can download data from the USGS servers. Save it to disk, and load it into the display. For Roger and other nerds... it's a little over 12,000 lines of code. The high resolution mapping tiles is nearly 1 gigabyte of data, but the rest of the program is only about 15 megs. Brian    |
Responses:
[21854] [21855] [21857] [21858] [21815] [21816] [21818] [21817] [21819] [21820]
21854
From: blindhog 6th sense, [DNS_Address]
Subject: I Checked the Coordinates Shown on Your Work & a Google...
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...map search shows a location well north of Anchorage. Is the edge of that dip at those coordinates? I don't know where to find the answer to this question, but maybe you might know, has the southern part of Alaska been rising in elevation over the decades? Lastly, if that dip snaps back to level, what will it mean for Anchorage and for all coastal cities on the west coast of North America and the east coast of Asia? |
21855
From: blindhog 6th sense, [DNS_Address]
Subject: I've Heard "Experts" Say That There is Elasticity in the...
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...plates, thus allowing for that dip that you described. However, isn't there a breaking point such that the part of the plate that is dipping down could snap off rather than much of the plate on top breaking off? Meaning the "small"* snapped off part could instantaneously rise up at that break creating a new mountain ridge/range all along the section of the break? * "small", as in it could be the length of Japan, if not as wide. |
21857
From: Skywise, [DNS_Address]
Subject: Re: I've Heard "Experts" Say That There is Elasticity in...
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Apologies for the late reply. The lat/lon coordinates shown represent the location of the camera viewpoint. They don't necessarily relate to where any quakes are, unless the view point is where the quakes are. This is a virtual 3D world space*, where there is a camera at one XYZ location looking towards another XYZ location. As to the plate dipping down, it's not going to snap off or suddenly decide to float back up straight. Once subducted, it stays there, eventually becoming absorbed into the mantle. As an aside, seismic tomography has mapped the remains of long ago subducted pieces of Earth's crust. Have you seen my newer post which contains a YouTube video of my program in action? *Interestingly, there is nothing 3D about how the image is actually generated by the video card. It's all 2D, manipulated with a bunch of math to look 3D. It's that math that GPU's are sickeningly fast at doing. Brian |
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[21858]
21858
From: blindhog 6th sense, [DNS_Address]
Subject: Thanks for Responding to a Old Neophyte.
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In my defense, I wasn't suggesting the broken part of the subducting plate would float upwards, but rather that the instantaneously snapped edges of that plate would instantaneously poke up. Given that the plate that has bent down could be 100 miles in depth, a snapped up of a 1/2 mile, a 1/4 mile or something more or less seems plausible. I suppose dating has been done on either sides of mountain ranges to find out if one side showed evidence of being closer to the surface and the other side being deeper or closer to the hot mantel. |
Responses:
None
21815
From: Roger , [DNS_Address]
Subject: Re: 3d quake program
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Brian; That's BEAUTIFUL!!! Now how about a motion picture version? Quakes plotted as a time series so we can see how things develop? Roger |
21816
From: Roger , [DNS_Address]
Subject: Re: 3d quake program
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Brian; How did you get that many quakes in one year? I have the entire NEIC database for mag 3.5 and up and there aren't that many in it. Roger |
21818
From: Skywise, [DNS_Address]
Subject: Re: 3d quake program
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"Now how about a motion picture version? Quakes plotted as a time series so we can see how things develop?" All in good time. There's too many ideas I have.... Although, animation might be a trick because of the way the data is fed to the graphics card. But I'm sure I'll figure it out. In fact, I already have ideas.... I wish you could see the smoothness of movement when moving around. That's achieved by loading the graphics card with a lot of pre-computed data. Although that computation only takes a second, once loaded the draw command then takes milliseconds. I just did a test with all data I have through 2020, nearly 4 million records. Now THAT chugs at about 200 millisconds per frame. But that's still usable. Hmmmm... ideas spring to mind.... "I have the entire NEIC database for mag 3.5 and up and there aren't that many in it." Because I have everything. Not just 3.5+. But we have different goals in mind. Brian |
Responses:
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21817
From: Roger , [DNS_Address]
Subject: Re: 3d quake program
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Brian; Correction; mag 2.5 and up which is all the search engine allows. Roger |
21819
From: Skywise, [DNS_Address]
Subject: Re: 3d quake program
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You can manually enter a smaller number, down to -10 in fact. Just tested it now. You can also leave the fields empty and then it grabs everything by default. Brian |
Responses:
[21820]
21820
From: Roger , [DNS_Address]
Subject: Re: 3d quake program
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Brian; Didn't know you could override the selection buttons. Doesn't matter to me though, I'm primarily interested in the big ones, the ones worth predicting. Roger |
Responses:
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