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CC_MULTIBEAM_98015: Outline of the Multibeam Dataset off Cape Cod, MA from USGS cruise 98015

Metadata also available as: OUTLINE | TEXT

Frequently-anticipated questions:

What does this data set describe?

Title:
CC_MULTIBEAM_98015: Outline of the Multibeam Dataset off Cape Cod, MA from USGS cruise 98015
Abstract:
This data set includes an outline of the multibeam bathymetric and backscatter dataset offshore of Cape Cod, Massachusetts. The multibeam data were collected with a multibeam sea floor mapping system during USGS survey 98015, conducted November 9 - 25, 1998. The surveys were conducted using a Simrad EM 1000 multibeam echo sounder mounted aboard the Canadian Coast Guard vessel Frederick G. Creed. This multibeam system utilizes 60 electronically aimed receive beams spaced at intervals of 2.5 degrees that insonify a strip of sea floor up to 7.5 times the water depth (swath width of 100 to 200 m within the survey area). The horizontal resolution of the beam on the sea floor is approximately 10% of the water depth. Vertical resolution is approximately 1 percent of the water depth.
  1. How should this data set be cited?

    U.S. Geological Survey, 2004, CC_MULTIBEAM_98015: Outline of the Multibeam Dataset off Cape Cod, MA from USGS cruise 98015: Open-File Report 2005-1048, 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.

    Poppe, L.J., Paskevich, V.F., Butman, B., Ackerman, S.D., Danforth, W.W., Foster, D.S., and Blackwood, D.S., 2006, Geological Interpretation of Bathymetric and Backscatter Imagery of the Sea Floor off Eastern Cape Cod, Massachusetts: Open-File Report 2005-1048, 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: -70.301563
    East_Bounding_Coordinate: -69.837144
    North_Bounding_Coordinate: 42.112872
    South_Bounding_Coordinate: 41.616669

  3. What does it look like?

    <http://pubs.usgs.gov/of/2005/1048/data/basemaps/boundaries/surveys/cc_multibeam_98015-thumb.gif> (GIF)
    Thumbnail image showing the extent and coverage of the data layer.
    <http://pubs.usgs.gov/of/2005/1048/data/basemaps/boundaries/surveys/cc_multibeam_98015.gif> (GIF)
    Image map showing the extent and coverage of the data layer.

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

    Calendar_Date: 2006
    Currentness_Reference: publication date

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

    Geospatial_Data_Presentation_Form: vector digital data

  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):

      • G-polygon (1)

    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 0.00000001. Longitudes are given to the nearest 0.00000001. Latitude and longitude values are specified in Decimal degrees.

      The horizontal datum used is World Geodetic System 84.
      The ellipsoid used is World Geodetic System 84.
      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?

    cc_multibeam_98015
    Shapefile Attribute Table (Source: ESRI)

    FID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    Shape
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    ID

    AREA
    Area of polygon in native units. (Source: USGS)

    PERIMETER
    Perimeter of polygon in native units. (Source: USGS)

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?

    Lawrence J. Poppe
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

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

Why was the data set created?

To release a digital outline of a multibeam bathymetric and backscatter dataset from off Cape Cod.

How was the data set created?

  1. From what previous works were the data drawn?

    capenorthmos_geo4m-wgs84.tif (source 1 of 2)
    Source_Contribution:
    The original multibeam backscatter data acquired with a Simrad EM 1000 echosounder during USGS cruise 98015 aboard the Canadian Coast Guard vessel Frederick G. Creed was compiled to create the 4-m digital mosaic. The extent completed mosaic was traced to create the survey outline.

    capesouthmos_geo4m-wgs84.tif (source 2 of 2)
    Source_Contribution:
    The original multibeam backscatter data acquired with a Simrad EM 1000 echosounder during USGS cruise 98015 aboard the Canadian Coast Guard vessel Frederick G. Creed was compiled to create the 4-m digital mosaic. The extent completed mosaic was traced to create the survey outline.

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

    Date: 2004 (process 1 of 3)
    The multibeam imagery was imported into the ArcView GIS project view. The multibeam imagery was outlined using the available graphic tools then converted to an ArcView shapefile.

    Person who carried out this activity:

    Lawrence J. Poppe
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

    (508) 548-8700 x2281 (voice)
    (508) 457-2310 (FAX)
    lpoppe@usgs.gov

    Data sources used in this process:
    • capenorthmos_geo4m_wgs84.tif

    Data sources produced in this process:

    • capenorthout.dbf
    • capenorthout.shp
    • capenorthout.shx

    Date: 2004 (process 2 of 3)
    The multibeam imagery was imported into the ArcView GIS project view. The multibeam imagery was outlined using the available graphic tools then converted to an ArcView shapefile.

    Person who carried out this activity:

    Lawrence J. Poppe
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

    (508) 548-8700 x2281 (voice)
    (508) 457-2310 (FAX)
    lpoppe@usgs.gov

    Data sources used in this process:
    • capesouthmos_geo4m_wgs84.tif

    Data sources produced in this process:

    • capesouthout.dbf
    • capesouthout.shp
    • capesouthout.shx

    Date: 09-Mar-2006 (process 3 of 3)
    The previously created northern and southern halves of the survey were combined to create a single shapefile showing the extent and coverage of the USGS multibeam survey 98015.

    Person who carried out this activity:

    Valerie Paskevich
    U.S. Geological Survey
    GIS Coordinator
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

    (508) 548-8700 x2281 (voice)
    (508) 457-2310 (FAX)
    vpaskevich@usgs.gov

    Data sources used in this process:
    • capenorthout.dbf
    • capenorthout.shp
    • capenorthout.shx
    • capesouthout.dbf
    • capesouthout.shp
    • capesouthout.shx

    Data sources produced in this process:

    • cc_multibeam_98015.dbf
    • cc_multibeam_98015.shp
    • cc_multibeam_98015.shx

  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?

  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?

    These data are complete; no further processing and(or) modifications will be made.

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

    No additional checks for topological consistency were performed on this data.

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:
Public domain data are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information.

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

    Lawrence J. Poppe
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    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: Outline of the multibeam survey completed during the U.S. Geological Survey (USGS), Coastal and Marine Geology Program (CMGP), Woods Hole Science Center (WHSC) cruise 98015

  3. What legal disclaimers am I supposed to read?

    Although all data have been used by the 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.

    Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. government.

  4. How can I download or order the data?

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

    These data are available in Environmental Systems Research Institute (ESRI) shapefile format. The user must have ArcGIS® or ArcView® 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing data. A free data viewer, ArcExplorer, capable of displaying the data is available from ESRI at www.esri.com.

Who wrote the metadata?

Dates:
Last modified: 17-Mar-2006
Metadata author:
Lawrence J. Poppe
U.S. Geological Survey
Geologist
384 Woods Hole Road
Woods Hole, MA 02543-1598
USA

(508) 548-8700 x2318 (voice)
(508) 457-2310 (FAX)
lpoppe@usgs.gov

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

Generated by mp version 2.8.18 on Wed Mar 22 14:12:05 2006