RIS_CR_GEO_4M.TIF: 4-m Coastal Relief Model Bathymetry Image of an Area in Rhode Island Sound in Geographic

Metadata also available as Outline | Text

Frequently-anticipated questions:

What does this data set describe?

Title:
RIS_CR_GEO_4M.TIF: 4-m Coastal Relief Model Bathymetry Image of an Area in Rhode Island Sound in Geographic
Abstract:
The National Geophysical Data Center (NGDC) assembled a gridded database referred to as the Coastal Relief Model (CRM). NGDC created the comprehensive data set by merging the U.S. Geological Survey 3-arc-second Digital Elevation Models (DEMs) with a compilation of hydrographic soundings covering the US East Coast. The CRM extends from the coastal state boundaries to as far offshore as the data will support a continuous view of the sea floor.
  1. How should this data set be cited?

    U.S. Geological Survey, 2007, RIS_CR_GEO_4M.TIF: 4-m Coastal Relief Model Bathymetry Image of an Area in Rhode Island Sound in Geographic: Open-File Report 2007-1150, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center, Woods Hole, MA.

    Online Links:

    This is part of the following larger work.

    McMullen, K.Y., Poppe, L.J., Twomey, E.R., Danforth, W.W., Haupt, T.A., and Crocker, J.M., 2007, Sidescan Sonar Imagery, Multibeam Bathymetry, and Surficial Geologic Interpretations of the Sea Floor in Rhode Island Sound, off Sakonnet Point, Rhode Island: Open-File Report 2007-1150, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center, Woods Hole, MA.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -71.219060
    East_Bounding_Coordinate: -71.075544
    North_Bounding_Coordinate: 41.403561
    South_Bounding_Coordinate: 41.308893

  3. What does it look like?

    <http://pubs.usgs.gov/of/2007/1150/data/bathymetry/geo/ris_cr_geo_4m/ris_cr_geo_4m.gif> (GIF)
    Overview image of the Coastal Relief Model bathymetry in and around study area

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

    Calendar_Date: 2001
    Currentness_Reference: publication date

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

    Geospatial_Data_Presentation_Form: remote-sensing image

  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 5992 x 9083 x 1, type Pixel

    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 0.000000. Longitudes are given to the nearest 0.000000. 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?

    Band_1

    ObjectID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    Value


    Red


    Green


    Blue


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?

    U.S. Geological Survey
    c/o Katherine McMullen
    Sediment Lab Technician
    384 Woods Hole Road
    Woods Hole, MA 02543
    USA

    (508) 548-8700 x2277 (voice)
    (508) 457-2310 (FAX)
    kmcmullen@usgs.gov

Why was the data set created?

This image provides a view of the CRM for the project area and is used as a basemap for overlaying multibeam bathymetry from NOAA Survey H11320.

How was the data set created?

  1. From what previous works were the data drawn?

    NGDC CRM, U.S. Northeast Atlantic Coast, Vol 1 (source 1 of 1)
    , Coastal Relief Model, U.S. Northeast Atlantic Coast, Vol. 1.

    Online Links:

    Type_of_Source_Media: online
    Source_Contribution:
    CRM Volume 1 was used to create the grid of bathymetry used as a background for bathymetry from NOAA Survey H11320.

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

    Date: 2007 (process 1 of 2)
    The desired data was extracted from the Coastal Relief Model volume 1, resampled at 4 m and saved as an ASCII Grid.

    Person who carried out this activity:

    Erin Twomey
    U.S. Geological Survey
    Research Assistant
    384 Woods Hole Road
    Woods Hole, MA 02543
    USA

    (508) 548-8700 x2284 (voice)
    (508) 457-2310 (FAX)
    etwomey@usgs.gov

    Data sources used in this process:
    • Coastal Relief Model volume 1

    Data sources produced in this process:

    • LISound_1897_UTM_4m.asc

    Date: 2007 (process 2 of 2)
    ASCII Grid of CRM bathymetry in Rhode Island Sound was converted from UTM to geographic and transformed into a GeoTIFF.

    Person who carried out this activity:

    Katherine McMullen
    U.S. Geological Survey
    Sediment Lab Technician
    384 Woods Hole Road
    Woods Hole, MA 02543
    USA

    (508) 548-8700 x2277 (voice)
    (508) 457-2310 (FAX)
    kmcmullen@usgs.gov

    Data sources used in this process:
    • LISound_1897_UTM_4m.asc

    Data sources produced in this process:

    • ris_cr_geo_4m.tif

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

    National Oceanic and Atmospheri, National Geophysical Data Center (NGDC), 20010907, Coastal Relief Model, Volume 1 (U.S. Northeast Atlantic Coast).

    Online Links:

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

  1. How well have the observations been checked?

  2. How accurate are the geographic locations?

  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: Bathymetry is not to be used for navigation purposes.

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

    Lawrence Poppe
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA 02543
    USA

    (508) 548-8700 x2314 (voice)
    (508) 457-2310 (FAX)
    lpoppe@usgs.gov

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

    Downloadable Data: 4-m bathymetry image of the Coastal Relief Model in and around area of NOAA Survey H11320

  3. What legal disclaimers am I supposed to read?

    Although this data set has been used by the U.S. Geological Survey (USGS), no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials.

  4. How can I download or order the data?

  5. What hardware or software do I need in order to use the data set?

    This image is available as a GeoTIFF image with an accompanying world file. To utilize this data, the user must have an image viewer, image processing, or GIS software package capable of importing a GeoTIFF image.

Who wrote the metadata?

Dates:
Last modified: 12-Jun-2007
Metadata author:
U.S. Geological Survey
c/o Katherine McMullen
Sediment Lab Technician
384 Woods Hole Road
Woods Hole, MA 02543
USA

(508) 548-8700 x2277 (voice)
(508) 457-2310 (FAX)
kmcmullen@usgs.gov

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

Generated by mp version 2.8.6 on Tue Jun 12 08:40:18 2007