DOI: https://doi.org/10.5069/G9D798B8
OT Collection ID: OT.112011.26911.2
OT Collection Name: Yosemite National Park, CA: Rockfall Studies
Short Name: CA10_Zimmer
Collection Platform: Airborne Lidar

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Download and Access Products: 
	1. Point Cloud Data
		opentopoID: OTLAS.112011.26911.2
		Data Processing: https://portal.opentopography.org/lidarDataset?opentopoID=OTLAS.112011.26911.2

	2. Raster
		opentopoID: OTSDEM.112011.26911.2
		Data Processing: https://portal.opentopography.org/raster?opentopoID=OTSDEM.112011.26911.2


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Collection Overview: NCALM Seed Project. PI: Valerie Zimmer, University of California Berkeley. The area of interest is defined by a quadrilateral polygon with an area of 35.1 km2, located in the grounds of the Yosemite National Park, specifically the Half Dome and the Yosemite Valley. The polygon is located approximately 127 km east of Modesto, CA and 110 km north of Fresno, CA. The data were collected for rock fall studies in the Yosemite National Park using seismic, acoustic, and Lidar data.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 - https://ncalm.cive.uh.edu). NCALM funding provided by NSF's Division of Earth Sciences, Instrumentation and Facilities Program. EAR-1043051.

Dataset Citation: Yosemite National Park, CA: Rockfall Studies. Distributed by OpenTopography. https://doi.org/10.5069/G9D798B8 . Accessed: 2024-12-22

Use License: CC BY 4.0

Dataset Keywords: lidar

Survey Date: 08/06/2010
Publication Date: 12/01/2011

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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: 302,906,745 pts

Area: 61.5 km^2

Point Density: 4.93 pts/m^2

Classifications: 
	Class 1 - Unclassified: 152,058,090
	Class 2 - Ground: 150,645,771
	Class 7 - Low Point (low noise): 202,884
Coordinates System: 
	Horizontal: NAD83 (CORS96) / UTM Zone 11N Meters [EPSG: 26911]
	Vertical: NAVD88 (GEOID 09) [EPSG: 5703]

Survey Report: https://cloud.sdsc.edu/v1/AUTH_opentopography/www/metadata/NCALM/Report_2010_S005_218_Zimmer.pdf

LAS Validation Data Report: http://cloud.sdsc.edu/v1/AUTH_opentopography/www/lasReports/CA10_Zimmer.html

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Dataset Extent in KMZ format: https://portal.opentopography.org/getKml?otCollectionID=OT.112011.26911.2&download=true

Dataset Spatial Bounds:
	North: 37.780749°
	South: 37.69823°
	East: -119.502604°
	West: -119.632638°