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Messages 1 - 13 of total 13 in this topic |
gstock
climber
Yosemite Valley
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Topic Author's Original Post - Oct 8, 2012 - 01:23pm PT
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Figured this deserved its own thread.
Below is a digital terrain movie of El Capitan I put together for my Facelift presentation. It was produced from terrestrial laser scanning (LiDAR) data collected from El Cap Meadow, with many millions of individually georeferenced points. The grayscale values relate to the reflectivity of the rock, which is why the North America diorite appears so dark relative to the surrounding granite.
We are using terrestrial LiDAR to map the geology of El Capitan and study rockfalls throughout Yosemite Valley. Enjoy!
Greg Stock
Yosemite Park Geologist
(209) 379-1420
greg_stock@nps.gov
[Click to View YouTube Video]
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spenchur
climber
Flagstaff/Thousand Oaks
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cool geology related bump...i watched that thing 10 times. awesome!
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Mungeclimber
Trad climber
the crowd MUST BE MOCKED...Mocked I tell you.
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hubba hubba, nice vid!
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PhilG
Trad climber
The Circuit, Tonasket WA
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Way cool!
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HighTraverse
Trad climber
Bay Area
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I've been hoping you'd post this.
Now I can sleep again!
Hey....there's El Cap Tree in all it's glory.
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Jane Gallwey
Big Wall climber
Ireland
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Sweet, what scanner are you using? Didn't realise the geologic map of El Cap was using TLS. Would love to hear more of the technical details of this project.
Cheers,
Jane - Laser scanning surveyor
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Minerals
Social climber
The Deli
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Thanks for posting that, Greg!
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phylp
Trad climber
Millbrae, CA
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Oh, so glad you posted that!
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gstock
climber
Yosemite Valley
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Topic Author's Reply - Oct 8, 2012 - 08:50pm PT
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The data were collected with an Optech long-range scanner. We tried several "extended range" units beginning in 2007, but none had the range to get data from the upper third of the cliff until the long-range unit was introduced in 2010. I use I-Site Studio software to view the point clouds.
Greg
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Grizzly
Big Wall climber
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Awesome!! Thanks Greg
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Wade Icey
Trad climber
www.alohashirtrescue.com
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yes
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Messages 1 - 13 of total 13 in this topic |
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