DOI: https://doi.org/10.5069/G97P8W9T
OT Collection ID: OT.032006.32611.1
OT Collection Name: B4 Project - Southern San Andreas and San Jacinto Faults
Short Name: B4
Collection Platform: Airborne Lidar

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Download and Access Products: 
	1. Point Cloud Data
		opentopoID: OTLAS.032006.32611.1
		Data Processing: https://portal.opentopography.org/lidarDataset?opentopoID=OTLAS.032006.32611.1


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Collection Overview: The B4 Lidar Project collected lidar point cloud data of the southern San Andreas and San Jacinto Faults in southern California. Data acquisition and processing were performed by the National Center for Airborne Laser Mapping (NCALM) in partnership with the USGS and Ohio State University through funding from the EAR Geophysics program at the National Science Foundation (NSF). Optech International contributed the ALTM3100 laser scanner system. UNAVCO and SCIGN assisted in GPS ground control and continuous high rate GPS data acquisition. A group of volunteers from USGS, UCSD, UCLA, Caltech and private industry, as well as gracious landowners along the fault zones, also made the project possible. If you utilize the B4 data for talks, posters or publications, we ask that you acknowledge the B4 project. The B4 logo can be downloaded here.A new reprocessed (classified) version of this dataset is here: B4 Project - Southern San Andreas and San Jacinto Faults - Classified Lidar Publications associated with this dataset can be found at NCALM's Data Tracking Center

Dataset Acknowledgement: The B4 Lidar Project collected lidar point cloud data of the southern San Andreas and San Jacinto Faults in southern California.  Data acquisition and processing were performed by the National Center for Airborne Laser Mapping (NCALM)  in partnership with the USGS and Ohio State University through funding from the EAR Geophysics program at the National Science Foundation (NSF).  Optech International contributed the ALTM3100 laser scanner system. UNAVCO and SCIGN assisted in GPS ground control and continuous high rate GPS data acquisition. A group of volunteers from USGS, UCSD, UCLA, Caltech and private industry, as well as gracious landowners along the fault zones, also made the project possible.

Dataset Citation: B4 Project - Southern San Andreas and San Jacinto Faults. Distributed by OpenTopography. https://doi.org/10.5069/G97P8W9T . Accessed: 2024-04-26

Use License: CC BY 4.0

Dataset Keywords: B4 project, San Andreas fault, San Jacinto fault, California, lidar

Survey Date: 05/18/2005 - 05/27/2005
Publication Date: 03/01/2006

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

	2. Ohio State University, School of Earth Sciences
	Role: Collector
	Url: http://geology.okstate.edu/

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

	4. Ohio State University, School of Earth Sciences
	Role: Partner
	Url: http://geology.okstate.edu/

	5. U.S. Geological Survey
	Role: Partner
	Url: https://www.usgs.gov/

	6. UNAVCO
	Role: Partner
	Url: https://www.unavco.org/


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Total number of points: 5,681,610,713 pts

Area: 1,906 km^2

Point Density: 2.98 pts/m^2

Classifications: 
	Class 1 - Unclassified: 5,681,610,713
Coordinates System: 
	Horizontal: WGS84 / UTM Zone 11N Meters [EPSG: 32611]
	Vertical: Ellipsoid

Survey Report: https://u.osu.edu/b4lidar

LAS Validation Data Report: http://cloud.sdsc.edu/v1/AUTH_opentopography/www/lasReports/B4.html

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Dataset Extent in KMZ format: https://portal.opentopography.org/getKml?otCollectionID=OT.032006.32611.1&download=true

Dataset Spatial Bounds:
	North: 36.0708268641649°
	South: 32.8649278545368°
	East: -115.614770697411°
	West: -120.637762530238°