DOI: https://doi.org/10.5069/G91N7Z92
OT Collection ID: OT.082020.32610.1
OT Collection Name: High Resolution SFM Topography of the Central San Andreas Fault, California
Short Name: CA19_Bunds
Collection Platform: Structure from Motion / Photogrammetry

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Download and Access Products: 
	1. Point Cloud Data
		opentopoID: OTLAS.082020.32610.1
		Data Processing: https://portal.opentopography.org/lidarDataset?opentopoID=OTLAS.082020.32610.1

	2. Raster
		opentopoID: OTSDEM.082020.32610.1
		Data Processing: https://portal.opentopography.org/raster?opentopoID=OTSDEM.082020.32610.1


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Collection Overview: The San Andreas fault at Dry Lake Valley data set comprises high-resolution topography and an orthomosaic of part of the creeping central section of the San Andreas fault (SAF) at Dry Lake Valley, California, USA. The data set covers ~3 km of the SAF and ~2.7 km2 area. The data were created using small UAS-derived low-altitude aerial photographs, Structure-from-Motion processing, and georeferencing from dGNSS onboard the sUAS and ground control points.  The motivation for producing the data set was to difference the topography against EarthScope lidar of the area collected ten years earlier, in 2007, to measure strain along and across strike of the fault (Scott et al., 2020). The study site was chosen because it is the location of a previous paleoseismology study (Toke et al., 2015), and creep-induced fracturing was mapped in detail at the location in 2014 and used to infer deformation rate localized on the fault (Scott et al., 2020). 
For more information see:
Scott, C., Bunds, M., Shirzaei, M., & Toke, N. (2020). Creep along the Central San Andreas Fault from Surface Fractures, Topographic Differencing, and InSAR. Journal of Geophysical Research: Solid Earth. https://doi.org/10.1029/2020JB019762

Dataset Acknowledgement: N/A

Dataset Citation: Bunds, M.P., Scott, C., Toké, N.A., Saldivar, J., Woolstenhulme, L., Phillips, J., Keck, M., Smith, S., and Ranney, M., 2020, High Resolution Topography of the Central San Andreas Fault at Dry Lake Valley, California, USA, distributed by OpenTopography. DOI: https://doi.org/10.5069/G91N7Z92. Accessed: 2024-04-19

Use License: CC BY 4.0

Dataset Keywords: San Andreas fault, aseismic creep, tectonic, scarp, structure from motion, SfM, sUAS, high resolution topography, point cloud, digital elevation model, topographic differencing, lidar

Survey Date: 10/27/2019 - 10/28/2019
Publication Date: 08/11/2020

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Data Provider and Roles:
	1. Arizona State University, School of Earth and Space Exploration
	Role: Author
	Url: Not Available.

	2. Utah Valley University
	Role: Author
	Url: Not Available.

	3. Utah Valley University
	Role: Principal Investigator
	Url: Not Available.

	4. Arizona State University, School of Earth and Space Exploration
	Role: Collector
	Url: https://www.asu.edu/

	5. Utah Valley University
	Role: Collector
	Url: https://www.uvu.edu/


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Total number of points: 1,191,514,616 pts

Area: 2.74 km^2

Point Density: 434.86 pts/m^2

Classifications: 
	Class 1 - Unclassified: 134,035,495
	Class 2 - Ground: 1,057,479,121
Coordinates System: 
	Horizontal: WGS84 / UTM Zone 10N Meters [EPSG: 32610]
	Vertical: WGS84 (Ellipsoid) Heights Meters

Survey Report: https://cloud.sdsc.edu:443/v1/AUTH_opentopography/www/metadata/CA19_Bunds_metadata.pdf

LAS Validation Data Report: https://portal.opentopography.org/lasReport?opentopoID=OTLAS.082020.32610.1

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Dataset Extent in KMZ format: https://portal.opentopography.org/getKml?otCollectionID=OT.082020.32610.1&download=true

Dataset Spatial Bounds:
	North: 36.4773845603301°
	South: 36.4544898238567°
	East: -121.042853690312°
	West: -121.069217607084°