ArcInfo GRID format of the 2004 Multibeam Backscatter Data in the Northeastern Channel Islands Region, Southern California [mos.zip]

Metadata also available as - [Outline] - [Parseable text] - [XML]

Frequently anticipated questions:


What does this data set describe?

Title:
ArcInfo GRID format of the 2004 Multibeam Backscatter Data in the Northeastern Channel Islands Region, Southern California [mos.zip]
Abstract:
ArcInfo GRID format data generated from the 2004 multibeam sonar survey of the Northeastern Channel Islands, CA Region. The data include high-resolution, acoustic, corrected backscatter.
Supplemental_Information:
Information for USGS Coastal and Marine Geology data collection field activity E-1-04-SC are online at <http://walrus.wr.usgs.gov/infobank/e/e104sc/html/e-1-04-sc.meta.html>.
Information for Lamont-Doherty Earth Observatory field activity EW0407 are online at <http://www.marine-geo.org/link/entry.php?id=EW0407>.
  1. How might this data set be cited?
    Dartnell, Peter, Cochrane, Guy, and Dunaway, Mary Elaine, 2005, ArcInfo GRID format of the 2004 Multibeam Backscatter Data in the Northeastern Channel Islands Region, Southern California [mos.zip]:.

    Online Links:

    This is part of the following larger work.

    Dartnell, Peter, Cochrane, Guy, and Dunaway, Mary Elaine, 2005, Multibeam Bathymetry and Backscatter Data: Northeastern Channel Islands Region, Southern California: Open-File Report 2005-1153, U.S. Geological Survey, Reston, VA.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -119.72
    East_Bounding_Coordinate: -119.03
    North_Bounding_Coordinate: 34.33
    South_Bounding_Coordinate: 33.88
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 06-Aug-2004
    Ending_Date: 15-Aug-2004
    Currentness_Reference:
    ground condition
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: ArcInfo GRID
  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 raster data types:
      • Dimensions, 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: 0.9996
      Longitude_of_Central_Meridian: -117.00000
      Latitude_of_Projection_Origin: 0.00000
      False_Easting: 0.00
      False_Northing: 0.00
      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 15.0
      Ordinates (y-coordinates) are specified to the nearest 15.0
      Planar coordinates are specified in Meters
      The horizontal datum used is WGS84.
      The ellipsoid used is WGS84.
      The semi-major axis of the ellipsoid used is 6378137.00 meters.
      The flattening of the ellipsoid used is 1/0.003352811.
  7. How does the data set describe geographic features?
    Entity_and_Attribute_Overview:
    MOS is an ArcInfo GRID with the following attributes: Cell Size = 15.000 Data Type: Floating Point Number of Rows = 3163 Number of Columns = 3945
    BOUNDARY Xmin = 251306.282 Xmax = 310481.282 Ymin = 3753319.315 Ymax = 3800764.315
    STATISTICS Minimum Value = 3.000 Maximum Value = 247.931 Mean = 206.873 Standard Deviation = 9.064
    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)
    • Peter Dartnell
    • Guy Cochrane
    • Mary Elaine Dunaway
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    Peter Dartnell
    U.S. Geological Survey, Coastal and Marine Geology Program
    Physical Scientist
    USGS, 400 Natural Bridges Drive
    Santa Cruz, CA
    USA

    (831) 460-7415 (voice)
    (831) 427-4748 (FAX)
    pdartnell@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) or other software to display acoustic backscatter data of the Northeastern Channel Islands, CA Region.

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: 30-Nov-2004 (process 1 of 1)
    The multibeam bathymetry and acoustic backscatter data were collected along a continuous swath perpendicular to the direction of the ship using a Kongsberg Simrad EM1002 multibeam sonar system. The data are cleaned of bad navigation and depth readings and corrected for tides to mean lower low water datum using a predictive tide model. The depth readings are gridded into a common grid. The gridded data are converted to ArcInfo GRID format using ArcInfo's ASCIIGRID command. Person who carried out this activity:
    Peter Dartnell
    U.S. Geological Survey, Coastal and Marine Geology Program
    Physical Scientist
    USGS, 400 Natural Bridges Drive
    Santa Cruz, CA
    USA

    (831) 460-7415 (voice)
    (831) 427-4748 (FAX)
    pdartnell@usgs.gov
  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?
    Not applicable for raster data.
  2. How accurate are the geographic locations?
    0.5 meters
  3. How accurate are the heights or depths?
    0.05 percent of the water depth.
  4. Where are the gaps in the data? What is missing?
    Complete
  5. How consistent are the relationships among the observations, including topology?
    Unspecified

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:
This information is not intended for navigational purposes.
Read and fully comprehend the metadata prior to data use. Uses of these data should not violate the spatial resolution of the data. Where these data are used in combination with other data of different resolution, the resolution of the combined output will be limited by the lowest resolution of all the data.
Acknowledge the U.S. Geological Survey in products derived from these data. Share data products developed using these data with the U.S. Geological Survey.
This database has been approved for release and publication by the Director of the USGS. Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use.
Although this Federal Geographic Data Committee-compliant metadata file is intended to document these data in nonproprietary form, as well as in ArcInfo format, this metadata file may include some ArcInfo-specific terminology.
  1. Who distributes the data set? (Distributor 1 of 1)
    U.S. Geological Survey, Coastal and Marine Geology Program
    Attn: Peter Dartnell
    USGS, 400 Natural Bridges Drive
    Santa Cruz, CA
    USA

    (831) 460-7415 (voice)
  2. What's the catalog number I need to order this data set? USGS Open-File Report 2005-1153 Acoustic Backscatter Data ESRI ArcInfo GRID [mos.zip]
  3. What legal disclaimers am I supposed to read?
    This information is not intended for navigational purposes.
    This database has been approved for release and publication by the Director of the USGS. Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use.
    Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof.
  4. How can I download or order the data?

Who wrote the metadata?

Dates:
Last modified: 12-Sep-2014
Metadata author:
Peter Dartnell
U.S. Geological Survey, Coastal and Marine Geology Program
Physical Scientist
USGS, 400 Natural Bridges Drive
Santa Cruz, CA
USA

(831) 460-7415 (voice)
(831) 427-4748 (FAX)
pdartnell@usgs.gov
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)

This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/westcoast/socal/cinms/northeastern/mosgrd.faq.html>
Generated by mp version 2.9.49 on Mon Sep 10 17:44:01 2018