H11310_1M_UTM19NAD83.TXT: ASCII text file of the Original 1-m Gridded Bathymetry from NOAA Survey H11310 in Central Narragansett Bay

Metadata also available as Outline | Text

Frequently-anticipated questions:

What does this data set describe?

Title:
H11310_1M_UTM19NAD83.TXT: ASCII text file of the Original 1-m Gridded Bathymetry from NOAA Survey H11310 in Central Narragansett Bay
Abstract:
The United States Geological Survey (USGS) is working cooperatively with the National Oceanic and Atmospheric Association (NOAA) to interpret the surficial geology in estuaries along the coast of the northeastern United States. The purpose of our present study is to interpret the distributions of surficial sediments and sedimentary environments in an area of Narragansett Bay using sidescan sonar imagery, high-resolution bathymetry, and sediment data. The bathymetry presented herein covers an area of the sea floor in central Narragansett Bay. The bathymetry and their interpretations serve many purposes, including: (1) defining the geological variability of the sea floor, which is one of the primary controls of benthic habitat diversity; (2) improving our understanding of the processes that control the distribution and transport of bottom sediments and the distribution of benthic habitats and associated infaunal community structures; and (3) providing a detailed framework for future research, monitoring, and management activities. The bathymetry images also serve as base maps for subsequent sedimentological, geochemical, and biological observations, because precise information on environmental setting is important for selection of sampling sites and for accurate interpretation of point measurements.
  1. How should this data set be cited?

    National Oceanic and Atmospheric Administration, 2007, H11310_1M_UTM19NAD83.TXT: ASCII text file of the Original 1-m Gridded Bathymetry from NOAA Survey H11310 in Central Narragansett Bay: Open-File Report 2006-1199, 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., Signell, R.P., Denny, J.F., Crocker, J.M., Beaver, A.L., and Schattgen, P.T., 2007, Surficial Geology in Central Narragansett Bay, Rhode Island: Interpretations of Sidescan Sonar and Multibeam Bathymetry: Open-File Report 2006-1199, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center, Woods Hole, MA.

    Online Links:

    Other_Citation_Details:
    This digital publication may also be available via the web at pubs.usgs.gov

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -71.426993
    East_Bounding_Coordinate: -71.282023
    North_Bounding_Coordinate: 41.600747
    South_Bounding_Coordinate: 41.520796

  3. What does it look like?

    <http://pubs.usgs.gov/of/2006/1199/data/bathymetry/utm/h11310_1m_utm19nad83_original/h11310_1m_utm19nad83.gif> (GIF)
    Overview of data in original 1-m bathymetry from NOAA Survey H11310

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

    Calendar_Date: 2004
    Currentness_Reference: ground condition

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

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      This is a Point data set.

    2. What coordinate system is used to represent geographic features?

      Grid_Coordinate_System_Name: Universal Transverse Mercator
      Universal_Transverse_Mercator:
      UTM_Zone_Number: 19
      Transverse_Mercator:
      Scale_Factor_at_Central_Meridian: 0.999600
      Longitude_of_Central_Meridian: -69.000000
      Latitude_of_Projection_Origin: 0.000000
      False_Easting: 500000.000000
      False_Northing: .0000000

      Planar coordinates are encoded using row and column
      Abscissae (x-coordinates) are specified to the nearest 1.000000
      Ordinates (y-coordinates) are specified to the nearest 1.000000
      Planar coordinates are specified in meters

      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is Geodetic Reference System 80.

      Vertical_Coordinate_System_Definition:
      Altitude_System_Definition:
      Altitude_Resolution: 0.000
      Altitude_Distance_Units: meters
      Depth_System_Definition:
      Depth_Datum_Name: Mean lower low water
      Depth_Distance_Units: meters
      Depth_Encoding_Method: Explicit depth coordinate included with horizontal coordinates

  7. How does the data set describe geographic features?

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?

    Please acknowledge NOAA and the NOAA Ship RUDE as the originators of this data set.

  3. To whom should users address questions about the data?

    Andrew L. Beaver
    National Oceanic and Atmospheric Administration
    Navigation Manager
    27 Tarzwell Drive
    Narragansett, RI 02882
    USA

    (401) 782-3252 (voice)
    (401) 782-3292 (FAX)
    andrew.l.beaver@noaa.gov

Why was the data set created?

This text file contains the multibeam bathymetry data acquired during NOAA survey H11310 of Central Narragansett Bay. Data are recorded as XYZ triples with coordinates recorded in UTM.

How was the data set created?

  1. From what previous works were the data drawn?

    H11310_1m_UTM19NAD83.txt (source 1 of 1)
    , Unpublished Material, H11310_1m_UTM19NAD83.txt.

    Type_of_Source_Media: DVD-ROM
    Source_Contribution:
    Original raw, unprocessed shallow-water multibeam bathymetry data.

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

    Date: 2004 (process 1 of 1)
    The multibeam data for this survey was acquired in XTF (extended Triton data format) and recorded digitally through an ISIS data acquisition system. Once digitally recorded, the XTF data were processed using CARIS HIPS/SIPS software to quality control the data and to incorporate sound velocity and tidal corrections. Data were gridded to 1 m; vertical datum is mean lower low water.

    Person who carried out this activity:

    Atlantic Hydrographic Branch, NOAA
    Atlantic Hydrographic Branch, NOAA
    Norfolk, VA 23510
    USA

    Data sources produced in this process:
    • H11310_1m_UTM19NAD83.txt

  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?

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:
Data are not for navigation purposes. Public domain data are freely redistributable with proper metadata and source attribution. Please recognize the National Oceanic and Atmosperic Administration (NOAA) as the originator of the data set.

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

    U.S. Geological Survey
    c/o Larry Poppe
    Geologist
    384 Woods Hole Road
    Woods Hole, MA 02543
    USA

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

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

    Downloadable Data: ASCII text file of the 1-m gridded bathymetry of NOAA Survey H11310

  3. What legal disclaimers am I supposed to read?

    Although this data set has been used by the USGS and NOAA, no warranty, expressed or implied, is made by the USGS or NOAA 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 or NOAA 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?

    The user must have a program capable of reading and processing ASCII formated XYZ data files.

Who wrote the metadata?

Dates:
Last modified: 14-Nov-2006
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 Nov 14 09:13:05 2006