DOI: https://doi.org/10.5069/G98G8HSS
OT Collection ID: OT.032018.32611.2
OT Collection Name: Topographic stress controls, San Bernardino Mountains, CA 2017
Short Name: CA17_Lin
Collection Platform: Airborne Lidar

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Download and Access Products: 
	1. Raster
		opentopoID: OTSDEM.032018.32611.2
		Data Processing: https://portal.opentopography.org/raster?opentopoID=OTSDEM.032018.32611.2

	2. Point Cloud Data
		opentopoID: OTLAS.032018.32611.2
		Data Processing: https://portal.opentopography.org/lidarDataset?opentopoID=OTLAS.032018.32611.2


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Collection Overview: This dataset, located within the San Bernardino Mountains, CA, was collected as an NCALM Seed grant for Jessica Lin, University of California, Los Angeles, Earth, Planetary, and Space Sciences Department to support an investigation of topographic stress control on subsurface weathered zone and seismic site conditions in southern California. The requested survey area is located approximately 11 km north of San Bernardino, CA. The polygon encloses approximately 62 km2. Note: A considerable percentage of the points in this dataset were classified as "building" (LAS class 6) although visual inspection indicates these points are mostly above-ground vegetation. For the purposes of distribution though OpenTopography, these points have been grouped with "unclassified" (LAS class 1) points to reduce point cloud classification to either "ground" or "unclassified" below.Publications associated with this dataset can be found at NCALM's Data Tracking Center

Dataset Acknowledgement: Lidar data acquisition and processing completed by the National Center for Airborne Laser Mapping (NCALM). NCALM funding provided by NSF's Division of Earth Sciences, Instrumentation and Facilities Program. EAR-1339015.

Dataset Citation: Lin, J. (2017): Topographic stress controls, San Bernardino Mountains, CA 2017 airborne lidar survey. National Center for Airborne Laser Mapping (NCALM). Distributed by OpenTopography. https://doi.org/10.5069/G98G8HSS.. Accessed: 2024-12-22

Use License: CC BY 4.0

Dataset Keywords: ncalm, san bernardino, faults, california, lidar

Survey Date: 03/18/2017
Publication Date: 03/13/2018

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Data Provider and Roles:
	1. National Center for Airborne Laser Mapping
	Role: Collector
	Url: https://ncalm.cive.uh.edu/

	2. National Science Foundation
	Role: Funder
	Url: https://nsf.gov/


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Total number of points: 642,349,035 pts

Area: 62 km^2

Point Density: 10.36 pts/m^2

Classifications: 
	Class 1 - Unclassified: 381,539,012
	Class 2 - Ground: 80,778,682
	Class 6 - Building: 180,031,341
Coordinates System: 
	Horizontal: NAD83 (2011) / UTM Zone 11N Meters [EPSG: 26911]
	Vertical: NAVD88 (GEOID 12B) [EPSG: 5703]

Survey Report: https://cloud.sdsc.edu/v1/AUTH_opentopography/www/metadata/CA17_Lin_Metadata.pdf

LAS Validation Data Report: http://cloud.sdsc.edu/v1/AUTH_opentopography/www/lasReports/CA17_Lin.html

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Dataset Extent in KMZ format: https://portal.opentopography.org/getKml?otCollectionID=OT.032018.32611.2&download=true

Dataset Spatial Bounds:
	North: 34.24595827218293°
	South: 34.18164786401093°
	East: -117.1999290495595°
	West: -117.3189673126456°