Southern San Andreas Fault from Painted Canyon to Bombay Beach, CA

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DOI: https://doi.org/10.5069/G94M92RG
OT Collection ID: OT.092021.32611.1
OT Collection Name: Southern San Andreas Fault from Painted Canyon to Bombay Beach, CA
Short Name: CA21_Bunds
Collection Platform: Structure from Motion / Photogrammetry
Metadata Download:
  • ISO 19115 (Data)
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    Point Cloud Data   Bulk Download     opentopoID: OTLAS.092021.32611.1

    Raster Data   Bulk Download     opentopoID: OTSDEM.092021.32611.1
    Collection Overview: ASU logo UVU logo

    This high-resolution topography dataset of the Southern San Andreas Fault (SSAF) includes a point cloud, digital surface model (DSM), and orthomosaic that span ~40 km strike-length of the fault from Painted Canyon south to Bombay Beach, California, USA. The survey width is ~0.5 - 0.7 km, resulting in over 30 km2 area. The point cloud contains 8.2 x 109 points, and the DSM and orthomosaic resolutions are 10 cm and 4 cm, respectively. Field work was completed over 3 days in February, 2020 when 15773 photographs were acquired with small uncrewed aerial system (sUAS). The final dataset was produced using structure-from-motion (SfM) processing of derived aerial photographs with georeferencing primarily from dGNSS onboard the sUAS. Vertical root-mean-square-error (RMSe) of the DSM is 0.040 m based on 155 checkpoints measured with dGNSS and horizontal RMSe is estimated to be 0.023 m based on 28 checkpoints that incorporated markers visible in aerial photographs.

    Motivations to produce this open dataset include: the high earthquake hazard posed by the SSAF, the broad scientific interest in the area, the excellent ability to resolve the ground surface with SfM techniques due to the very sparse vegetation, and the complement to the existing B4 lidar data collected in 2005. This work also serves as a test-run for rapid response to a future surface-rupturing event, including the potential for repeat surveys to capture afterslip.

    Use of the dataset should be acknowledged with authorship information and the DOI (see citation section below). For additional information, please contact Michael Bunds (michael.bunds@uvu.edu).



    Dataset Acknowledgement: N/A - Acknowledgement Guidance

    Dataset Citation: Bunds, M.P., Scott, C., Whitney, B., and Lee, V.J.C., 2021, High Resolution Topography of the Southern San Andreas Fault from Painted Canyon to Bombay Beach, USA, distributed by OpenTopography. DOI: https://doi.org/10.5069/G94M92RG. Accessed: 2023-03-22

    Use License: CC BY 4.0

    Dataset Keywords: San Andreas fault, tectonic, scarp, SfM, sUAS, topography, point cloud, digital elevation model, orthophoto, differencing, Painted Canyon, Mecca Hills, Durmid Hill, Salt Creek, lidar

    Survey Date: 02/15/2020 - 02/18/2020

    Publication Date: 09/03/2021
    Data Provider and Roles:
    Funder Collectors Principal Investigators
    Total number of points: 8,427,334,008 pts

    Area: 40.13 km2

    Point Density: 210.00 pts/m2

    Classifications:
        Class 0 - Never classified8,427,334,008

    Raster Resolution: 0.10 meter

    Orthophoto Resolution: 0.04 meter

    Coordinate System:
        Horizontal: UTM Zone 11N WGS84 Meters [EPSG: 32611]
        Vertical: ITRF2014 epoch 2020.131

    Units: meter

    Survey Report: CA21_Bunds_metadata.pdf

    LAS Validation Data Report: Reports
    Tile index in shapefile format: Download

    Dataset Extent in KMZ format: Download

    Dataset Spatial Bounds: North: 33.6228858510183°     South: 33.3536656843556°     East: -115.730355925612°     West: -116.040271522876°