Interpretation Showing the Distribution of Sea-Floor Sedimentary Environments in Great Round Shoal Channel, MA (H11079_SEDENV.SHP, Geographic)

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Frequently anticipated questions:


What does this data set describe?

Title:
Interpretation Showing the Distribution of Sea-Floor Sedimentary Environments in Great Round Shoal Channel, MA (H11079_SEDENV.SHP, Geographic)
Abstract:
The U.S. Geological Survey (USGS), in cooperation with the National Oceanic and Atmospheric Administration (NOAA) and the Massachusetts Office of Coastal Zone Management (MA CZM), is producing detailed geologic maps of the coastal sea floor. Imagery, originally collected by NOAA for charting purposes, provide a fundamental framework for research and management activities along this part of the Massachusetts coastline, show the composition and terrain of the seabed, and provide information on sediment transport and benthic habitat. Interpretive data layers were derived from multibeam echo-sounder and sidescan sonar data collected in Great Round Shoal Channel, a passage through the shoals at the eastern entrance to Nantucket Sound, off Cape Cod, Massachusetts. In June 2006, bottom photographs and surficial sediment data were acquired as part of a ground-truth reconnaissance survey.
  1. How might this data set be cited?
    U.S. Geological Survey, 2007, Interpretation Showing the Distribution of Sea-Floor Sedimentary Environments in Great Round Shoal Channel, MA (H11079_SEDENV.SHP, Geographic): Open-File Report 2007-1138, U.S. Geological Survey, Woods Hole Coastal and Marine Science Center, Woods Hole, MA.

    Online Links:

    This is part of the following larger work.

    Poppe, L.J., Ackerman, S.D., Foster, D.S., Blackwood, D.S., Williams, S.J., Moser, M.S., Stewart, H.F., and Glomb, K.A., 2007, Sea-Floor Character and Sedimentary Processes of Great Round Shoal Channel, Offshore Massachusetts: Open-File Report 2007-1138, U.S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details: 1 DVD-ROM
  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -70.023115
    East_Bounding_Coordinate: -69.778167
    North_Bounding_Coordinate: 41.450269
    South_Bounding_Coordinate: 41.401757
  3. What does it look like?
    http://pubs.usgs.gov/of/2007/1138/data/interpret/environment/h11079_sedenv.gif (GIF)
    Thumbnail image showing the distribution of sedimentary environments within NOAA survey H11079
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: 2007
    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 (46)
    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 0.000001. Longitudes are given to the nearest 0.000001. Latitude and longitude values are specified in Decimal degrees. The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is Geodetic Reference System 80.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257222.
  7. How does the data set describe geographic features?
    h11079_sedenv
    Information unavailable from original metadata. (Source: Information unavailable from original metadata.)
    FID
    Internal feature number. (Source: ESRI) Sequential unique whole numbers that are automatically generated.
    Shape
    Feature geometry. (Source: ESRI) Coordinates defining the features.
    ID
    Information unavailable from original metadata. (Source: Information unavailable from original metadata.) Information unavailable from original metadata.
    SEDENV
    Interpreted sedimentary environments (Source: Scientist)
    ValueDefinition
    Erosion or NondepositionAreas of the sea floor dominated by these processes
    Coarse Bedload TransportAreas of the sea floor dominated by this process

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • U.S. Geological Survey
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    U.S. Geological Survey
    Attn: Larry Poppe
    Geologist
    384 Woods Hole Road
    Woods Hole, MA

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

Why was the data set created?

To release an interpretation of the sedimentary environments generated from data collected during NOAA survey H11079 in Great Round Shoal Channel, offshore Massachusetts, in geographic.

How was the data set created?

  1. From what previous works were the data drawn?
    Information unavailable from original metadata. (source 1 of 1)
    Information unavailable from original metadata. Assumed to be NOAA., unknown, Information unavailable from original metadata..

    Other_Citation_Details:
    The source information was incomplete and had to be modified to meet the standard. Only the source media, time period of content, and source contribution were supplied.
    Type_of_Source_Media: DVD-ROM
    Source_Contribution:
    The original acoustic data acquired during NOAA survey H11079 aboard the NOAA ship Thomas Jefferson.
  2. How were the data generated, processed, and modified?
    Date: unknown (process 1 of 3)
    The geographic GeoTIFF image of the sidescan sonar and multibeam data from survey H11079 and the point data layer from grain-size analyses of sediments collected from this survey area were imported into the ArcView GIS project view. Sedimentary environments were interpreted based on tonal changes in the sidescan sonar imagey, the bathymetry and textural analyses. The interpreted sedimentary environments were outlined using the available graphic tools then converted to an ArcView shapefile for each environment. Thses shapefiles were merged into one file with the Geoprocessing Wizard extension. Person who carried out this activity:
    Larry Poppe
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2314 (voice)
    508-457-2310 (FAX)
    lpoppe@usgs.gov
    Data sources used in this process:
    • h11079_1mgeo_sss.tif
    • h11079_3mgeo_mb.tif
    • raf06005_seddata.shp
    Data sources produced in this process:
    • h11079_sedenv.shp
    • h11079_sedenv.shx
    • h11079_sedenv.dbf
    • h11079_sedenv.avl
    Date: 16-Nov-2015 (process 2 of 3)
    Edits to the metadata were made to fix any errors that MP v 2.9.30 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. In some cases, this meant adding text "Information unavailable" or "Information unavailable from original metadata" for those required fields that were left blank. Other minor edits were probably performed (title, publisher, publication place, etc.). The source information was incomplete and had to be modified to meet the standard. The original metadata specified the WGS84 as the ellipsoid name, but that is in conflict with the horizontal datum name and other geodetic model paramters specified, so that was changed to Geodetic Reference System 80. The metadata date (but not the metadata creator) was edited to reflect the date of these changes. The metadata available from a harvester may supersede metadata bundled within a download file. Compare the metadata dates to determine which metadata file is most recent. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Rd.
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@usgs.gov
    Date: 20-Jul-2018 (process 3 of 3)
    USGS Thesaurus keywords added to the keyword section. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@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?
  2. How accurate are the geographic locations?
    Navigation was by differential GPS
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    All collected data were processed and used to produce this dataset.
  5. How consistent are the relationships among the observations, including topology?
    Information unavailable from original metadata.

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 originator of this information.
  1. Who distributes the data set? (Distributor 1 of 1)
    Larry Poppe
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2314 (voice)
    508-457-2310 (FAX)
  2. What's the catalog number I need to order this data set? Downloadable Data
  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. 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: 20-Jul-2018
Metadata author:
U.S. Geological Survey
Attn: Larry Poppe
Geologist
384 Woods Hole Road
Woods Hole, MA

508-548-8700 x2314 (voice)
508-457-2310 (FAX)
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

This page is <https://cmgds.marine.usgs.gov/catalog/whcmsc/eastcoast/gome/great_round_shoal/h11079_sedenv.shp.faq.html>
Generated by mp version 2.9.49 on Mon Sep 10 17:45:06 2018