DOI: https://doi.org/10.5069/G9KH0KJK
OT Collection ID: OT.122024.6339.1
OT Collection Name: Lidar Survey over San Andreas Fault, CA 2017
Short Name: CA17_Brooks
Collection Platform: Airborne Lidar

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Download and Access Products: 
	1. Point Cloud Data
		opentopoID: OTLAS.122024.6339.1
		Data Processing: https://portal.opentopography.org/lidarDataset?opentopoID=OTLAS.122024.6339.1


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Collection Overview: This dataset contains laser scanner data from a helicopter platform designed by the Army Corps of Engineers' Cold Regions Research and Engineering Laboratory (CRREL), and the National Center for Airborne LiDAR Mapping (NCALM) at the University of Houston (Witter, et al. 2017). The platform was deployed on a Robinson R44 Raven II helicopter. The laser scanner operates at 1550 nm +/- 1 nm wavelength and is flown from 300 to 500 m above-ground at 30 - 60 kts with ground swath width of 300-500m and sampling of ~40 points/m2. These acquisition parameters yield vertical and horizontal accuracy of 3-5 cm & 6-10 cm, respectively. Standard processing techniques were used to remove laser returns from vegetation and enhance laser returns from the ground surface (Glennie, et al. 2014).

Dataset Acknowledgement: N/A

Dataset Citation: Brooks, B. (2024). Lidar Survey over San Andreas Fault, CA 2017. Distributed by OpenTopography. https://doi.org/10.5069/G9KH0KJK.. Accessed: 2024-12-22

Use License: CC BY 4.0

Dataset Keywords: lidar, helicopter, San Andreas, seismology 

Survey Date: 08/22/2017
Publication Date: 12/18/2024

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Data Provider and Roles:
	1. United States Geological Survey
	Role: Principal Investigator
	Url: Not Available.


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Total number of points: 19,703,119 pts

Area: 0.67 km^2

Point Density: 29.41 pts/m^2

Classifications: 
	Class 1 - Unclassified: 10,033,581
	Class 2 - Ground: 9,661,795
	Class 7 - Low Point (low noise): 7,743
Coordinates System: 
	Horizontal: NAD83 (2011) (EPOCH:2010) / UTM Zone 10N Meters [EPSG: 32610]
	Vertical: NAVD88 (GEOID 12A) [EPSG: 5703]

Survey Report: https://object.cloud.sdsc.edu:443/v1/AUTH_opentopography/www/metadata/CA17_Brooks_metadata.pdf

LAS Validation Data Report: https://portal.opentopography.org/lasReport?opentopoID=OTLAS.122024.6339.1

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Dataset Extent in KMZ format: https://portal.opentopography.org/getKml?otCollectionID=OT.122024.6339.1&download=true

Dataset Spatial Bounds:
	North: 36.186950402494595°
	South: 36.177744389376336°
	East: -120.754227945653°
	West: -120.76491819446217°