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This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

Bedrock cliffs in the San Gabriel and San Jacinto Mountains, California

Metadata Updated: November 12, 2020

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 – 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.

Datasets are complimentary to submitted manuscript to JGR earth surface:

Neely, 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

Supplementary 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.

See Neely et al., (2019) for more details on procedure used to align SfM dense cloud and lidar point clouds:

Alexander B. Neely, Roman A. DiBiase, Lee B. Corbett, Paul R. Bierman, Marc W. Caffee, Bedrock 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.

Access & Use Information

Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: No license information was provided.

Downloads & Resources

Dates

Metadata Date July 7, 2020
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) July 7, 2020 (publication)
Frequency Of Update

Metadata Source

Harvested from OpenTopography CSW

Additional Metadata

Resource Type Dataset
Metadata Date July 7, 2020
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) July 7, 2020 (publication)
Responsible Party Penn State University (Originator); OpenTopography (Originator)
Contact Email
Guid OTDS.072020.26911.2
Access Constraints
Bbox East Long -116.644331765993
Bbox North Lat 34.2322037553684
Bbox South Lat 33.8212168097631
Bbox West Long -117.636721963557
Coupled Resource
Frequency Of Update
Harvest Object Id c9628bf6-8bcd-4dd5-8ff5-888dcfb97b99
Harvest Source Id 1017486a-47c7-4139-9ed4-a4d93503679a
Harvest Source Title OpenTopography CSW
Licence
Metadata Language en
Metadata Type geospatial
Progress
Spatial Data Service Type
Spatial Reference System NAD83 / UTM zone 11N [EPSG: 26911]
Spatial Harvester True

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