Parump Valley: California/Nevada State Line

DOI: 10.5069/G9K935FB
OT Collection ID: OT.012013.26911.1
OT Collection Name: Parump Valley: California/Nevada State Line
Short Name: CA05_Wernicke
Collection Platform: Airborne Lidar
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    Point Cloud Data   Bulk Download     opentopoID: OTLAS.012013.26911.1
    Collection Overview: NCALM. PI: Brian Wernicke, Caltech and Bernard Guest, University of Calgary. The survey area consisted of three 500 meter wide corridors near the California-Nevada border and across the Pahrump Valley. The corridors total approximately 60 km long, 0.5 to 1 km wide and contained approximately 40 square km. Please note that the flight was conducted in an unconventional way as this was an add-on to other work and was done to quickly obtain data for the requested area. Rather than flying a regular, straight grid across the area, the airplane banked along the determined trajectory. This way of gathering data introduces noticeable error, especially on the fringes of the flight path, giving a "corduroy" appearance to the data. This is in addition to the background periodic fine scale elevation variation (normally 5 to 20cm) which is a property of the Optech LIDAR system, and within the machine's error limits. This effect is less noticeable in Corridor 1 as the plane was following a mostly straight trajectory. Our understanding is that if these preliminary data looked promising, a carefully planned survey would then be conducted if funding became available. Bare-earth extraction was not performed on this dataset due to the scarceness of vegetation in the interest area. Filtering the data with a conservative feature preserving algorithm (Hagerud) can remove some of the vegetation but with the expense of smoothing out some of the morphology in steep areas.

    Dataset Acknowledgement:
    Lidar data acquisition and processing completed by the National Center for Airborne Laser Mapping (NCALM - http://www.ncalm.org). NCALM funding provided by NSF's Division of Earth Sciences, Instrumentation and Facilities Program. EAR-1043051.

    Dataset Keywords: N/A

    Survey Date: 02/08/2005
    Total lidar returns: 49,069,165 pts

    Area: 48.00 km2

    Point Density: 1.02 pts/m2

    Coordinates System:
        Horizontal: UTM z11 N NAD83 (CORS96) [EPSG: 26911]
        Vertical: NAVD88 (Geoid 03) [EPSG: 5703]

    Survey Report: CA05_Wernicke.zip

    LAS Validation Data Report: CA05_Wernicke.html
    Dataset Extent in KMZ format: Download

    Dataset Spatial Bounds: North: 36.3084°     South: 36.0780°     East: -115.8050°     West: -116.1956°