Sea-floor_Interpretation -- Interpretation of the sea-floor substrate types in the study area from the combined data collection techniques.

Metadata also available as - [Outline]

Frequently-anticipated questions:

What does this data set describe

Title:
Sea-floor_Interpretation -- Interpretation of the sea-floor substrate types in the study area from the combined data collection techniques.
Abstract:
Interpretation of the sea-floor substrate types in the study area from the combined data collection techniques. In general, the entire mapped area was observed to have coarse-grained sediment, i.e., sand-to-boulders or bedrock outcrops. Most of the region can be characterized as having mixed grain sizes, with significant differences in the amount of the largest rocks. These differences have been characterized by three levels of boulder abundance for the mixed sediment: low, medium and high boulder abundance (Figure 8). These three levels were mapped using the raw backscatter data and the substrate classification map and are equivalent to average boulder abundances of less than 10 boulders/km2, 10-10,000 boulders/km2, and greater than 10,000 boulders/km2, respectively.
Supplemental_Information:
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in ArcInfo format, this metadata file may include some ArcInfo-specific terminology.
  1. How should this data set be cited

    Warrick, Jonathan, and Sagy, Yael, 2007, Sea-floor_Interpretation -- Interpretation of the sea-floor substrate types in the study area from the combined data collection techniques.: USGS Data Series 320, U.S. Geological Survey, Santa Cruz, CA.

    Online Links:

    This is part of the following larger work.

    Cochrane, Guy R., Warrick, Jonathan, Sagy, Yael, Finlayson, David, and Harney, Jodi, 2008, Sea-Floor Mapping and Benthic Habitat GIS at the mouth of the Elwha River, Washington. USGS Data Series 320. USGS Data Series 320

  2. What geographic area does the data set cover

    West_Bounding_Coordinate: -123.636435
    East_Bounding_Coordinate: -123.542862
    North_Bounding_Coordinate: 48.170988
    South_Bounding_Coordinate: 48.136564

  3. What does it look like

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

    Beginning_Date: 2005
    Ending_Date: 2005
    Currentness_Reference: Ground Condition

  5. What is the general form of this data set

    Geospatial_Data_Presentation_Form: map

  6. How does the data set represent geographic features

    1. How are geographic features stored in the data set

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

      • String (90)

    2. What coordinate system is used to represent geographic features

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.000002. Longitudes are given to the nearest 0.000002. Latitude and longitude values are specified in Decimal degrees.

      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

    Entity_and_Attribute_Overview:

    FID Alias: FID Data type: OID Width: 4 Precision: 0 Scale: 0 Definition: Internal feature number. Definition Source: ESRI
    Shape Alias: Shape Data type: Geometry Width: 0 Precision: 0 Scale: 0 Definition: Feature geometry. Definition Source: ESRI
    Id Alias: Id Data type: Number Width: 6
    Habitat Alias: Habitat Data type: String Width: 50
    Entity_and_Attribute_Detail_Citation: none

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

    The authors would like to thank, Larry Kooker, Mike Boyle, Gerry Hatcher, Dave Hogg, and Hank Chezar at the USGS Marine Facility (Redwood City, CA) contributed field support and logistical support. Andrew Stevenson from the USGS Coastal and Marine Program. The R/V Karluk was piloted by Katherine Peet from NOAA.

  3. To whom should users address questions about the data

    Guy R. Cochrane
    United States Geological Survey (USGS) Coastal and Marine Geology Program (CMGP)
    Geophysicist
    USGS, 400 Natural Bridges Drive
    Santa Cruz, CA 95060-5792
    USA

    (831) 427-4754 (voice)
    (831) 427-4748 (FAX)
    gcochrane@usgs.gov

Why was the data set created

These data are intended for science researchers, students, policy makers, and the general public. The data can be used with geographic information systems (GIS) software to display geologic and oceanographic information.

How was the data set created

  1. From what previous works were the data drawn

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

    Date: 2007 (process 1 of 1)
    First draft of metadata created by Yael Sagy using USGS template for trackline data.

  3. What similar or related data should the user be aware of

How reliable are the data; what problems remain in the data set

  1. How well have the observations been checked

    unknown

  2. How accurate are the geographic locations

    On the order of 10 meters

  3. How accurate are the heights or depths

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

    unknown

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

    Logical Consistency untested.

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)

    United States Geological Survey (USGS) Coastal and Marine Geology Program (CMGP)
    c/o Guy R. Cochrane
    Geophysicist
    USGS, 400 Natural Bridges Drive
    Santa Cruz, CA 95060-5792
    USA

    (831) 427-4754 (voice)
    (831) 427-4748 (FAX)
    gcochrane@usgs.gov

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

  3. What legal disclaimers am I supposed to read

    Please recognize the U.S. Geological Survey (USGS) as the source of this information.
    Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data.
    The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials.

  4. How can I download or order the data

Who wrote the metadata

Dates:
Last modified: 2007
Last Reviewed: 2007
Metadata author:
United States Geological Survey (USGS) Coastal and Marine Geology Program (CMGP)
c/o Guy R. Cochrane
Geophysicist
USGS, 400 Natural Bridges Drive
Santa Cruz, CA 95060-5792
USA

(831) 427-4754 (voice)
(831) 427-4748 (FAX)
gcochrane@usgs.gov

Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata ("CSDGM version 2") (FGDC-STD-001-1998)

Generated by mp version 2.9.3 on Tue Oct 16 14:09:51 2007