DOI: https://doi.org/10.5069/G9ST7N19
OT Collection ID: OT.102024.32610.1
OT Collection Name: Lidar Survey of Lava Tubes, CA 2023
Short Name: CA23_Williams
Collection Platform: Airborne Lidar

----------------------------------------------------------

Download and Access Products: 
	1. Point Cloud Data
		opentopoID: OTLAS.102024.32610.1
		Data Processing: https://portal.opentopography.org/lidarDataset?opentopoID=OTLAS.102024.32610.1

	2. Raster
		opentopoID: OTSDEM.102024.32610.1
		Data Processing: https://portal.opentopography.org/raster?opentopoID=OTSDEM.102024.32610.1


----------------------------------------------------------

Collection Overview: This lidar dataset was collected as part of an NCALM Seed grant for Edward Williams at the University of Maryland. This dataset was collected to help search for the topographic expression of lava tubes in a region where they are particularly abundant, the Lava Beds  National Monument in California.

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-2324629

Dataset Citation: Williams, E. (2024). Lidar Survey of Lava Tubes, CA 2023. National Center for Airborne Laser Mapping (NCALM). Distributed by OpenTopography. https://doi.org/10.5069/G9ST7N19. Accessed: 2024-12-22

Use License: CC BY 4.0

Dataset Keywords: lidar, lava, volcanology, speleology, ecology, archeology

Survey Date: 09/28/2023
Publication Date: 10/23/2024

----------------------------------------------------------

Data Provider and Roles:
	1. University of Maryland
	Role: Principal Investigator
	Url: Not Available.

	2. National Center for Airborne Laser Mapping
	Role: Collector
	Url: http://ncalm.cive.uh.edu/

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


----------------------------------------------------------

Total number of points: 1,254,657,441 pts

Area: 57.44 km^2

Point Density: 21.84 pts/m^2

Classifications: 
	Class 1 - Unclassified: 744,613,014
	Class 2 - Ground: 509,993,884
	Class 7 - Low Point (low noise): 40
	Class 18 - High Noise: 50,503
Coordinates System: 
	Horizontal: WGS84 2023.74 epoch (ITRF2014) / UTM Zone 10N Meters [EPSG: 32610]
	Vertical: NAVD88 (GEOID 18) [EPSG: 5703]

Survey Report: https://object.cloud.sdsc.edu:443/v1/AUTH_opentopography/www/metadata/CA23_Williams_metadata.pdf

LAS Validation Data Report: https://portal.opentopography.org/lasReport?opentopoID=OTLAS.102024.32610.1

----------------------------------------------------------

Dataset Extent in KMZ format: https://portal.opentopography.org/getKml?otCollectionID=OT.102024.32610.1&download=true

Dataset Spatial Bounds:
	North: 41.77291549498684°
	South: 41.68693814691719°
	East: -121.46215226553198°
	West: -121.57188041421496°