{"@type": "dcat:Dataset", "accessLevel": "public", "bureauCode": ["000:00"], "contactPoint": {"@type": "vcard:Contact", "fn": "OpenTopography Support", "hasEmail": "mailto:info@opentopography.org"}, "description": "Dataset includes (1) .las point clouds of steep, bare-bedrock cliffs derived from structure-from-motion photogrammetry. (2) Scaled orthophotos extracted approximately normal to a prominent cliff face within the structure-from-motion model.  Individual point cloud extents are approximately 10 \u0096 300 m across. Structure-from-motion models were rendered in AgiSoft Photoscan.  Structure-from-motion models where aligned and georeferenced to aerial lidar point clouds using iterative-closest-point alignment tool in CloudCompare.  Datasets are not classified and include vegetation. Data collection occurred in summers (May-August) of 2016-2019.\n\nDatasets are complimentary to submitted manuscript to JGR earth surface:\n\nNeely, A.B., and DiBiase, R.A., in review. Drainage area, bedrock fracture spacing, and weathering controls on landscape-scale patterns in surface sediment grain size, Journal of Geophysical Research, Earth Surface, doi:10.1002/essoar.10502617.1\n\nSupplementary files in complimentary manuscript contain shapefile outlines of cliff regions where bedrock fracture spacing was measured and table including bedrock cliff name and measured bedrock fracture spacing.  \n\nSee Neely et al., (2019) for more details on procedure used to align SfM dense cloud and lidar point clouds:\n\nAlexander B. Neely, Roman A. DiBiase, Lee B. Corbett, Paul R. Bierman, Marc W. Caffee,\nBedrock fracture density controls on hillslope erodibility in steep, rocky landscapes with patchy soil cover, southern California, USA, Earth and Planetary Science Letters, Volume 522, 2019, Pages 186-197, ISSN 0012-821X, https://doi.org/10.1016/j.epsl.2019.06.011.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5069/G96H4FKG", "mediaType": "text/html", "title": "OpenTopography Data Download Page"}], "identifier": "OTDS.072020.26911.2", "keyword": ["bedrock", "cliffs", "community-dataspace", "fracture", "hillslope"], "license": "https://creativecommons.org/licenses/by/4.0", "modified": "2020-07-07", "programCode": ["000:000"], "publisher": {"@type": "org:Organization", "name": "OpenTopography"}, "spatial": "-117.64,33.82,-116.64,34.23", "title": "Bedrock cliffs in the San Gabriel and San Jacinto Mountains, California"}