McKittrick Canyon Reef Trail strat section, Guadalupe Mtns Nat. Park, TX
Dataset includes SfM point cloud of northeastern edge of McKittrick Canyon in Guadalupe Mountains national park. Point cloud spans portions of the reef trail, extending from carbonate ramp/slope deposits, to overlying massive reef (large cliffs), and backreef deposits (flat layers with overhangs).
SfM photographs were collected with handheld 55mm zoom lens DSLR camera in May, 2018. Photograph locations were geotagged using an Arrow gold GPS unit to 3D accuracy of ~2 m.
Bare-earth airborne lidar dataset was used as reference cloud in iterative closest point alignment in CloudCompare V2.12: https://doi.org/10.5069/G9BK19G8. No vegetation filtering or clipping was performed on SfM derived point cloud.
M3C2 cloud-to-cloud difference between lidar point cloud and SfM point cloud with default parameters and SfM model as cloud 1 yields 1-sigma cloud-to-cloud difference of 0.96 m and 2-sigma cloud-to-cloud difference of 2.38 m. Lidar point cloud contains significant large holes in cliff overhang locations.
Accuracy is likely not sufficient for change detection analysis but is sufficient for morphometric analysis and stratigraphic mapping.
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Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | public |
| bureauCode |
[ "000:00" ] |
| contactPoint |
{ "fn": "OpenTopography Support", "@type": "vcard:Contact", "hasEmail": "mailto:info@opentopography.org" } |
| description | Dataset includes SfM point cloud of northeastern edge of McKittrick Canyon in Guadalupe Mountains national park. Point cloud spans portions of the reef trail, extending from carbonate ramp/slope deposits, to overlying massive reef (large cliffs), and backreef deposits (flat layers with overhangs). SfM photographs were collected with handheld 55mm zoom lens DSLR camera in May, 2018. Photograph locations were geotagged using an Arrow gold GPS unit to 3D accuracy of ~2 m. Bare-earth airborne lidar dataset was used as reference cloud in iterative closest point alignment in CloudCompare V2.12: https://doi.org/10.5069/G9BK19G8. No vegetation filtering or clipping was performed on SfM derived point cloud. M3C2 cloud-to-cloud difference between lidar point cloud and SfM point cloud with default parameters and SfM model as cloud 1 yields 1-sigma cloud-to-cloud difference of 0.96 m and 2-sigma cloud-to-cloud difference of 2.38 m. Lidar point cloud contains significant large holes in cliff overhang locations. Accuracy is likely not sufficient for change detection analysis but is sufficient for morphometric analysis and stratigraphic mapping. |
| distribution |
[ { "@type": "dcat:Distribution", "title": "OpenTopography Data Download Page", "accessURL": "https://doi.org/10.5069/G99C6VM6", "mediaType": "text/html" } ] |
| identifier | OTDS.052021.6342.1 |
| keyword |
[ "Cliff", "Fossils", "Guadalupe Mountains", "National Park", "Reef", "Stratigraphy", "community-dataspace" ] |
| license | https://creativecommons.org/licenses/by/4.0 |
| modified | 2021-05-14 |
| programCode |
[ "000:000" ] |
| publisher |
{ "name": "OpenTopography", "@type": "org:Organization" } |
| spatial | -104.77,31.99,-104.76,32.0 |
| title | McKittrick Canyon Reef Trail strat section, Guadalupe Mtns Nat. Park, TX |
