A preliminary investigation of the structure of southern Yucca Flat, Massachusetts Mountain, and CP basin, Nevada Test Site, Nevada, based on geophysical modeling

Metadata also available as

Frequently-anticipated questions:

What does this data set describe?
    Title:
    A preliminary investigation of the structure of southern Yucca Flat, Massachusetts Mountain, and CP basin, Nevada Test Site, Nevada, based on geophysical modeling
    Abstract:
    Magnetic data for CP Basin and southern Yucca Flat, Nevada Test Site, Nevada

  1. How should this data set be cited?

    Phelps, G., Justet, L., Moring, B., and Roberts, C., 2005, A preliminary investigation of the structure of southern Yucca Flat, Massachusetts Mountain, and CP basin, Nevada Test Site, Nevada, based on geophysical modeling: U.S. Geological Survey Open-File Report 2005-1367

    Online Links:

    • http://pubs.usgs.gov/of/2005/1367/

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -116.106091
    East_Bounding_Coordinate: -115.952184
    North_Bounding_Coordinate: 36.9830000
    South_Bounding_Coordinate: 36.794180

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

    Calendar_Date: 2005
    Currentness_Reference: ground condition

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: raster digital data

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      This is a Raster data set. It contains the following vector data types (SDTS terminology):

      • Entity point (146)
      • Point (4)
      It contains the following raster data types:
      • Dimensions 212 x 135 x 1, type Grid Cell

    2. What coordinate system is used to represent geographic features?

      Grid_Coordinate_System_Name: Universal Transverse Mercator
      Universal_Transverse_Mercator:
      UTM_Zone_Number: 11
      Transverse_Mercator:
      Scale_Factor_at_Central_Meridian: 0.999600
      Longitude_of_Central_Meridian: -117.000000
      Latitude_of_Projection_Origin: 0.000000
      False_Easting: 500000.000000
      False_Northing: 0.000000

      Planar coordinates are encoded using row and column
      Abscissae (x-coordinates) are specified to the nearest 100.000000
      Ordinates (y-coordinates) are specified to the nearest 100.000000
      Planar coordinates are specified in meters

      The horizontal datum used is D_WGS_1984.
      The ellipsoid used is WGS_1984.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257224.

  7. How does the data set describe geographic features?

    aeromag.asc
    x y z ascii file

    X
    longitude coordinate

    Y
    latitude coordinate

    nT
    magnetic residual anomaly, in nT

    Entity_and_Attribute_Overview:
    Z-values are the value of the magnetic anomaly at the given location The total field aeromagnetic data were collected along flight lines. The data were corrected for diurnal variation by subtracting base station magnetic data (low-pass filtered to remove spikes due to cultural interference). Any remaining leveling errors were corrected by tie-line leveling. IGRF2000 was then removed from the data, computed using GPS location and elevations at each observation point and epoch of September 26, 2003. The data were interpolated onto a regular grid using a minimum curvature interpolation technique.

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

  3. To whom should users address questions about the data?

    Geoffrey A. Phelps
    U.S.G.S.
    geologist
    345 Middlefield Road MS 989
    Menlo Park, CA 94025
    USA

Why was the data set created?
Magnetic survey was conducted to study near-surface faulting in the area.

How was the data set created?
  1. From what previous works were the data drawn?

  2. How were the data generated, processed, and modified?

    (process 1 of 1)

How reliable are the data; what problems remain in the data set?
  1. How well have the observations been checked?

    values are reported to the nearest 0.01 nT

  2. How accurate are the geographic locations?

    GPS sub-meter horizontal accuracy

  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

  5. How consistent are the relationships among the observations, including topology?

How can someone get a copy of the data set?
Are there legal restrictions on access or use of the data?

Access_Constraints: none
Use_Constraints: none

  1. Who distributes the data set? (Distributor 1 of 1)

    U.S. Geological Survey

  2. What's the catalog number I need to order this data set?

    Downloadable Data

  3. What legal disclaimers am I supposed to read?

  4. How can I download or order the data?

Who wrote the metadata?
Dates:
Last modified: 19-Aug-2005

Metadata author:
U.S. Geological Survey
345 Middlefield Road Mailstop 989
Menlo Park, CA 94025

Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

Metadata extensions used:

Generated by mp version 2.7.3 on Fri Aug 19 13:54:00 2005