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Steep Headwater-Colluvial Channels, Day Creek, San Gabriel Mountains CA, US
Dataset includes UAV structure-from-motion derived point cloud of steep headwater channels, cliffs, and hillslopes in the headwaters of Day Creek, San Gabriel Mountains, CA (survey conducted in August, 2018). Model spans ~500 x 500 m and was georeferenced to airborne lidar dataset using iterative-closest-point-alignment. Approximate point density of 225 pts/m2.
Bare-earth airborne lidar dataset was used as reference cloud (https://doi.org/10.5069/G9J38QPM). No vegetation filtering or clipping was performed on SfM derived point cloud. M3C2 cloud-to-cloud difference with default parameters yields 1-sigma cloud-to-cloud difference of 0.21 m and 2-sigma cloud-to-cloud difference of 0.78 m.
Accuracy is likely not sufficient for change detection analysis but is sufficient for morphometric analysis (channel geometries, sediment grain size, spatial patterns of soil/colluvial sediment cover).
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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 UAV structure-from-motion derived point cloud of steep headwater channels, cliffs, and hillslopes in the headwaters of Day Creek, San Gabriel Mountains, CA (survey conducted in August, 2018). Model spans ~500 x 500 m and was georeferenced to airborne lidar dataset using iterative-closest-point-alignment. Approximate point density of 225 pts/m2. Bare-earth airborne lidar dataset was used as reference cloud (https://doi.org/10.5069/G9J38QPM). No vegetation filtering or clipping was performed on SfM derived point cloud. M3C2 cloud-to-cloud difference with default parameters yields 1-sigma cloud-to-cloud difference of 0.21 m and 2-sigma cloud-to-cloud difference of 0.78 m. Accuracy is likely not sufficient for change detection analysis but is sufficient for morphometric analysis (channel geometries, sediment grain size, spatial patterns of soil/colluvial sediment cover). |
| distribution |
[ { "@type": "dcat:Distribution", "title": "OpenTopography Data Download Page", "accessURL": "https://doi.org/10.5069/G9F47MBX", "mediaType": "text/html" } ] |
| identifier | OTDS.052021.26911.1 |
| keyword |
[ "cliff", "community-dataspace", "headwater channel", "hillslope", "landslide", "san gabriel" ] |
| license | https://creativecommons.org/licenses/by/4.0 |
| modified | 2021-05-11 |
| programCode |
[ "000:000" ] |
| publisher |
{ "name": "OpenTopography", "@type": "org:Organization" } |
| spatial | -117.57,34.22,-117.57,34.23 |
| title | Steep Headwater-Colluvial Channels, Day Creek, San Gabriel Mountains CA, US |
