RICOMB_4MUTM: 4-m Grid of the Combined Multibeam Bathymetry Generated from National Oceanic and Atmospheric Administration (NOAA) Surveys H11922, H11995, H11996, H12009, H12010, H12011, H12015, H12023, H12033, H12137, H12139, H12296, H12298, H12299 Offshore in Rhode island and Block Island Sound (UTM Zone 19, NAD 83)

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

Frequently-anticipated questions:

What does this data set describe?

Title:
RICOMB_4MUTM: 4-m Grid of the Combined Multibeam Bathymetry Generated from National Oceanic and Atmospheric Administration (NOAA) Surveys H11922, H11995, H11996, H12009, H12010, H12011, H12015, H12023, H12033, H12137, H12139, H12296, H12298, H12299 Offshore in Rhode island and Block Island Sound (UTM Zone 19, NAD 83)
Abstract:
Detailed bathymetric maps of the sea floor in Block Island and Rhode Island Sounds are of great interest to the New York, Rhode Island, and Massachusetts research and management communities because of this area's ecological, recreational, and commercial importance. Geologically interpreted digital terrain models (DTMs) from individual surveys provide important benthic environmental information, yet many applications require a geographically broader perspective. For example, individual surveys are of limited use for the planning and construction of cross-sound infrastructure, such as cables and pipelines, or for the testing of regional circulation models. To address this need, we integrated 14 contiguous multibeam bathymetric DTMs, produced by the National Oceanic and Atmospheric Administration during charting operations, into one dataset that covers much of Block Island Sound and extends eastward across Rhode Island Sound. The new dataset, which covers over 1255 square kilometers, is adjusted to mean lower low water, is gridded to 4-meter resolution, and is provided in UTM Zone 19 NAD 83 and geographic WGS 84 projections. This resolution is adequate for sea-floor feature and process interpretation but is small enough to be queried and manipulated with standard Geographic Information System programs and to allow for future growth. Natural features visible in the grid include boulder lag deposits of winnowed Pleistocene strata, sand-wave fields, and scour depressions that reflect the strength of the oscillating and asymmetric tidal currents and scour by storm-induced waves. Bedform asymmetry allows interpretations of net sediment transport. Together the merged data reveal a larger, more continuous perspective of bathymetric topography than previously available, providing a fundamental framework for research and resource management activities off the Rhode Island coast.
  1. How should this data set be cited?

    National Oceanic and Atmospheric Administration, and U.S. Geological Survey, 2014, RICOMB_4MUTM: 4-m Grid of the Combined Multibeam Bathymetry Generated from National Oceanic and Atmospheric Administration (NOAA) Surveys H11922, H11995, H11996, H12009, H12010, H12011, H12015, H12023, H12033, H12137, H12139, H12296, H12298, H12299 Offshore in Rhode island and Block Island Sound (UTM Zone 19, NAD 83): Open-File Report 2014-1012, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Coastal and Marine Science Center, Woods Hole, MA.

    Online Links:

    This is part of the following larger work.

    Poppe, L.J., McMullen, K.Y., Danforth, W.W., Blankenship, M.A., Clos, A.R., Glomb, K.A., Lewit, P.G., Nadeau, M.A., Wood, D.A., and Parker, C.E., 2014, Combined Multibeam Bathymetry Data from Rhode Island Sound and Block Island Sound - A Regional Perspective: Open-File Report 2014-1012, U.S. Geological Survey, Reston, VA.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -72.126425
    East_Bounding_Coordinate: -70.839693
    North_Bounding_Coordinate: 41.403608
    South_Bounding_Coordinate: 41.096725

  3. What does it look like?

    <https://pubs.usgs.gov/of/2014/1012/data/bathy/grids/utm/ricomb_4mutm.gif> (GIF)
    Thumbnail image showing the combined 4-m gridded multibeam bathymetry collected during NOAA surveys H12009, H12010, H12011, H12015, H12023, H12033, H12137, H12139, H12296, H12298, and H12299 offshore in Rhode Island and Block Island Sounds in UTM Zone 19, NAD83

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

    Beginning_Date: 16-Jul-2008
    Ending_Date: 16-Nov-2011
    Currentness_Reference:
    ground condition (See the source citation in the lineage section for individual component's specific dates.)

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

    Geospatial_Data_Presentation_Form: raster digital data

  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 7761 x 26755 x 1, 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: 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: 0.000000

      Planar coordinates are encoded using row and column
      Abscissae (x-coordinates) are specified to the nearest 4.000000
      Ordinates (y-coordinates) are specified to the nearest 4.000000
      Planar coordinates are specified in meters

      The horizontal datum used is North American Datum of 1983.
      The ellipsoid used is Geodetic Reference System 80.
      The semi-major axis of the ellipsoid used is 6378137.000000.
      The flattening of the ellipsoid used is 1/298.257222.

      Vertical_Coordinate_System_Definition:
      Depth_System_Definition:
      Depth_Datum_Name: Mean lower low water
      Depth_Resolution: 0.1
      Depth_Distance_Units: meters
      Depth_Encoding_Method: Explicit depth coordinate included with horizontal coordinates

  7. How does the data set describe geographic features?

    Entity_and_Attribute_Overview:
    A 4-m grid of the combined bathymetry data from NOAA surveys H11922, H11995, H11996, H12009, H12010, H12011, H12015, H12023, H12033, H12137, H12139, H12296, H12298, and H11299 offshore in Rhode Island and Block Island Sounds in the UTM Zone 19, NAD 83 coordinate system.

    Geological interpretations have been completed and published for all of the bathymetric surveys used to make this combined dataset except H12298 and H12299, and interpretive reports for these last two surveys are in prep. See cross references for specific citations.

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 Larry Poppe
    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 4-m grid of the combined multibeam bathymetry generated from NOAA surveys H11922, H11995, H11996, H12009, H12010, H12011, H12015, H12023, H12033, H12137, H12139, H12296, H12298, and H12299 offshore in Rhode Island and Block Island Sounds in UTM Zone 19, NAD 83.

How was the data set created?

  1. From what previous works were the data drawn?

    (source 1 of 14)
    Schattgen, P. Tod , and Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic , Unpublished Material, H12009 bathymetry.

    Type_of_Source_Media: computer hard drive
    Source_Contribution: Original processed multibeam bathymetric data.

    (source 2 of 14)
    Smith, Shepard M. , and Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic , Unpublished Material, H12010 bathymetry.

    Type_of_Source_Media: computer hard drive
    Source_Contribution: Original processed multibeam bathymetric data.

    (source 3 of 14)
    Smith, Shepard M. , and Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic , Unpublished Material, H12011 bathymetry.

    Type_of_Source_Media: computer hard drive
    Source_Contribution: Original processed multibeam bathymetric data.

    (source 4 of 14)
    Smith, Shepard M. , and Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic , Unpublished Material, H12015 bathymetry.

    Type_of_Source_Media: computer hard drive
    Source_Contribution: Original processed multibeam bathymetric data.

    (source 5 of 14)
    Smith, Shepard M. , and Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic , Unpublished Material, H12033 bathymetry.

    Type_of_Source_Media: computer hard drive
    Source_Contribution: Original processed multibeam bathymetric data.

    (source 6 of 14)
    Smith, Shepard M. , and Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic , Unpublished Material, H12137 bathymetry.

    Type_of_Source_Media: computer hard drive
    Source_Contribution: Original processed multibeam bathymetric data.

    (source 7 of 14)
    Smith, Shepard M. , and Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic , Unpublished Material, H12139 bathymetry.

    Type_of_Source_Media: computer hard drive
    Source_Contribution: Original processed multibeam bathymetric data.

    (source 8 of 14)
    Schattgen, P. Tod , and Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic , Unpublished Material, H11922 bathymetry.

    Type_of_Source_Media: computer hard drive
    Source_Contribution: Original processed multibeam bathymetric data.

    (source 9 of 14)
    Schattgen, P. Tod , and Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic , Unpublished Material, H11995 bathymetry.

    Type_of_Source_Media: computer hard drive
    Source_Contribution: Original processed multibeam bathymetric data.

    (source 10 of 14)
    Schattgen, P. Tod , and Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic , Unpublished Material, H11996 bathymetry.

    Type_of_Source_Media: computer hard drive
    Source_Contribution: Original processed multibeam bathymetric data.

    (source 11 of 14)
    Smith, S.M., and Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic , Unpublished Material, H12023 bathymetry.

    Type_of_Source_Media: computer hard drive
    Source_Contribution: Original processed multibeam bathymetric data.

    (source 12 of 14)
    Krepp, L.T., and Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic , Unpublished Material, H12296 bathymetry.

    Type_of_Source_Media: computer hard drive
    Source_Contribution: Original processed multibeam bathymetric data.

    (source 13 of 14)
    Krepp, L.T., and Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic , Unpublished Material, H12298.

    Type_of_Source_Media: computer hard drive
    Source_Contribution: Original processed multibeam bathymetric data.

    (source 14 of 14)
    Krepp, L.T., and Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic , Unpublished Material, H12299 bathymetry.

    Type_of_Source_Media: computer hard drive
    Source_Contribution: Original processed multibeam bathymetric data.

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

    Date: Unknown (process 1 of 4)
    The 63-m NOAA Ship Thomas Jefferson and two 8.5-m aluminum Jensen launches (3101 and 3102) deployed from the ship acquired multibeam echosounder (MBES) data for 14 hydrographic surveys in Rhode Island and Block Island Sounds over an approximately 1255.6-square kilometer area between July 2008 and November 2011. Registry numbers for the completed surveys include: H11922, H11995, H11996, H12009, H12010, H12011, H12015, H12023, H12033, H12137, H12139, H12296, H12298, and H12299. During 2008, the MBES data were collected with a hull-mounted RESON SeaBat 240-kHz 8101 and 455-kHz 8125 shallow-water system aboard the launches and a RESON duel frequency (200-kHz/400-kHz) 7125 system aboard the NOAA Ship Thomas Jefferson. During 2009 and 2011, the MBES data were collected with a hull-mounted RESON SeaBat 455-kHz 8125 shallow-water system aboard launch 3101 and RESON single frequency (400-kHz) 7125 systems aboard launch 3102 and the NOAA Ship Thomas Jefferson. The vertical resolution of the multibeam data is approximately 0.5% of the water depth. The bathymetric datasets were acquired and digitally logged with HYPACK Hysweep, and processed by NOAA using CARIS Hydrographic Image Processing System (HIPS) software for quality control, to incorporate sound velocity and tidal corrections, and to produce the combined bathymetry adjusted for statistical error (BASE) surfaces. Horizontal positioning was by differential global positioning systems (DGPS); HYPACK was used for acquisition line navigation. Sound-velocity corrections were derived with frequent conductivity-temperature-depth profiles. A Brooke Ocean Technology Moving Vessel Profiler (MVP) with an Applied Microsystems Smart Sound Velocity and Pressure (SV&P) sensor was used to collect sound speed profile data from the ship. Manually deployed Seabird Electronics SBE-19+ CTD units were used to collect sound speed profile data from the launches. Tidal zone corrections were calculated from data acquired by the National Water Level Observation Network stations at New London, Connecticut (8461490); Newport, Rhode Island (8452660); Menemsha Harbor, Massachusetts (8448725); and Montauk, New York (8510560). The vertical datum is mean lower low water; X and Y units are meters, UTM Zone 19, NAD 83. Detailed descriptions of the MBES acquisition and processing by NOAA can be found in the Descriptive Reports and in the Data Acquisition and Processing Reports.

    Person who carried out this activity:

    National Oceanic and Atmospheric Administration
    c/o Castle Eugene Parker
    Hydrographer
    439 West York Street
    Norfolk, VA 23510
    USA

    757-441-6746 (voice)
    castle.e.parker@noaa.gov

    Data sources produced in this process:
    • H12009 CARIS HIPS database
    • H12010 CARIS HIPS database
    • H12011 CARIS HIPS database
    • H12015 CARIS HIPS database
    • H12033 CARIS HIPS database
    • H12137 CARIS HIPS database
    • H12139 CARIS HIPS database
    • H11922 CARIS HIPS database
    • H11995 CARIS HIPS database
    • H11996 CARIS HIPS database
    • H12023 CARIS HIPS database
    • H12296 CARIS HIPS database
    • H12298 CARIS HIPS database
    • H12299 CARIS HIPS database

    Date: 2013 (process 2 of 4)
    The field sheets from the surveys (average depths, not the shoal based field sheets) were read back into CARIS HIPS/SIPS software version 7.1. Using the Base Surface -> Combine command within HIPS, all of the source CARIS base surfaces were combined into a master BASE surface (ricomb_4m) having a 4 meter grid resolution.

    Person who carried out this activity:

    Bill Danforth
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA 02543-1598

    508-548-8700 x2274 (voice)
    508-457-2310 (FAX)
    bdanforth@usgs.gov

    Data sources used in this process:
    • H12009 CARIS HIPS database
    • H12010 CARIS HIPS database
    • H12011 CARIS HIPS database
    • H12015 CARIS HIPS database
    • H12033 CARIS HIPS database
    • H12137 CARIS HIPS database
    • H12139 CARIS HIPS database
    • H11922 CARIS HIPS database
    • H11995 CARIS HIPS database
    • H11996 CARIS HIPS database
    • H12023 CARIS HIPS database
    • H12296 CARIS HIPS database
    • H12298 CARIS HIPS database
    • H12299 CARIS HIPS database

    Data sources produced in this process:

    • ricomb_4m

    Date: 2013 (process 3 of 4)
    The combined base surface was exported from CARIS as a Bathymetric Attributed Grid (BAG) file. See <http://www.opennavsurf.org/papers/ons_fsd.pdf> for a description of the BAG format.

    Person who carried out this activity:

    Bill Danforth
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA 02543
    USA

    508-548-8700 x2274 (voice)
    508-457-2310 (FAX)
    bdanforth@usgs.gov

    Data sources used in this process:
    • ricomb_4m

    Data sources produced in this process:

    • ricomb_4m.bag

    Date: 2013 (process 4 of 4)
    The BAG surface was imported into Fledermaus v7.3 to make equivalent digital terrain model (DTM) files. The floating point format for each sounding depth point is preserved during data import. Additionally, the BAG surface was imported into Fledermaus as "gridded data", therefore re-gridding of data did not occur during the import process and thus preserved the original resolution of the CARIS base surface. The DTM was then directly exported to ArcGIS as a bathy raster file using the FMGIS module built into Fledermaus v7.3, retaining all of the projection information (NAD_1983_UTM_Zone_19N) and grid cell size (4 meter node spacing).

    Person who carried out this activity:

    Bill Danforth
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA 02543-1598

    508-548-8700 x2274 (voice)
    508-457-2310 (FAX)
    bdanforth@usgs.gov

    Data sources used in this process:
    • ricomb_4m.bag

    Data sources produced in this process:

    • ricomb_4mutm

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

    Schattgen, P. Tod , 2009, H12009: Descriptive Report H12009, National Ocean Survey, National Oceanic and Atmospheric Administration, Atlantic Hydrographic Branch, Norfolk, VA.

    Online Links:

    Smith, Shepard M. , 2009, H12010: Descriptive Report H12010, National Ocean Survey, National Oceanic and Atmospheric Administration, Atlantic Hydrographic Branch, Norfolk, VA.

    Online Links:

    Smith, Shepard M. , 2009, H12011: Descriptive Report H12011, National Ocean Survey, National Oceanic and Atmospheric Administration, Atlantic Hydrographic Branch, Norfolk, VA.

    Online Links:

    Smith, Shepard M. , 2009, H12015: Descriptive Report H12015, National Ocean Survey, National Oceanic and Atmospheric Administration, Atlantic Hydrographic Branch, Norfolk, VA.

    Online Links:

    Smith, Shepard M. , 2009, H12033: Descriptive Report H12033, National Ocean Survey, National Oceanic and Atmospheric Administration, Atlantic Hydrographic Branch, Norfolk, VA.

    Online Links:

    Smith, Shepard M. , 2009, H12137: Descriptive Report H12137, National Ocean Survey, National Oceanic and Atmospheric Administration, Atlantic Hydrographic Branch, Norfolk, VA.

    Online Links:

    Smith, Shepard M. , 2009, H12139: Descriptive Report H12139, National Ocean Survey, National Oceanic and Atmospheric Administration, Atlantic Hydrographic Branch, Norfolk, VA.

    Online Links:

    Poppe, L.J., McMullen, K.Y., Ackerman, S.D., Blackwood, D.S., Irwin, B.J., Schaer, J.D., and Forrest, M.R., 2011, Sea-floor geology and character of eastern Rhode Island Sound west of Gay Head, Massachusetts: Open-File Report 2011-1004, U.S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details:
    1 DVD-ROM

    This publication provides a geological interpretation of NOAA survey H11922.

    McMullen, K.Y., Poppe, L.J., Ackerman, S.D., Blackwood, D.S., Schaer, J.D., Nadeau, M.A., and Wood, D.A., 2011, Surficial geology of the sea floor in central Rhode Island Sound southeast of Point Judith, Rhode Island: Open-File Report 2011-1005, U.S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details:
    1 DVD-ROM

    This publication provides a geological interpretation of NOAA survey H11996

    McMullen, K.Y., Poppe, L.J., Denny, J.F., Haupt, T.A., and Crocker, J.M., 2008, Sidescan-sonar imagery and surficial geologic interpretations of the sea floor in central Rhode Island Sound: Open-File Report 2007-1366, U.S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details: 1 DVD-ROM
    McMullen, K.Y., Poppe, L.J., Haupt, T.A., and Crocker, J.M., 2009, Sidescan-sonar imagery and surficial geologic interpretations of the sea floor in western Rhode Island Sound: Open-File Report 2008-1181, U.S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details: 1 DVD-ROM
    McMullen, K.Y., Poppe, L.J., Ackerman, S.D., Worley, C.R., Nadeau, M.A., and Van Hoy, M.V., 2012, Sea-floor geology in central Rhode Island Sound south of Sakonnet Point, Rhode Island: Open-File Report 2012-1004, U.S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details:
    1 DVD-ROM

    This publication provides a geological interpretation of NOAA survey H11995.

    Schattgen, P.T., 2008, H11922: Descriptive Report H11922, National Ocean Survey, National Oceanic and Atmospheric Administration, Atlantic Hydrographic Branch, Norfolk, VA.

    Online Links:

    Schattgen, P.T., 2008, H11995: Descriptive Report H11995, National Ocean Survey, National Oceanic and Atmospheric Administration, Atlantic Hydrographic Branch, Norfolk, VA.

    Online Links:

    Schattgen, P.T., 2008, H11996: Descriptive Report H11996, National Ocean Survey, National Oceanic and Atmospheric Administration, Atlantic Hydrographic Branch, Norfolk, VA.

    Online Links:

    Smith, S.M., 2009, H12023: Descriptive Report H12023, National Ocean Survey, National Oceanic and Atmospheric Administration, Atlantic Hydrographic Branch, Norfolk, VA.

    Online Links:

    Krepp, L.T., 2011, H12296: Descriptive Report H12296, National Ocean Survey, National Oceanic and Atmospheric Administration, Atlantic Hydrographic Branch, Norfolk, VA.

    Online Links:

    Krepp, L.T., 2011, H12298: Descriptive Report H12298, National Ocean Survey, National Oceanic and Atmospheric Administration, Atlantic Hydrographic Branch, Norfolk, VA.

    Online Links:

    Krepp, L.T., 2011, H12299: Descriptive report H12299, National Ocean Survey, National Oceanic and Atmospheric Administration, Atlantic Hydrographic Branch, Norfolk, VA.

    Online Links:

    Poppe, L.J., Danforth, W.W., McMullen, K.Y., Blankenship, M.A., Glomb, K.A., Wright, D.B., and Smith, S.M., 2012, Sea-floor character and sedimentary processes of Block Island Sound, Offshore Rhode Island: Open-File Report 2012-1005, U.S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details:
    1 DVD-ROM

    This publication provides geological interpretations of NOAA surveys H12009, H12010, H12011, H12015, H12033, H12137, and H12139.

    McMullen, K.Y., Poppe, L.J., Ackerman, S.D., Blackwood, D.S., Lewit, P.G., and Parker, C.E., 2013, Sea-floor geology in northeastern Block Island Sound, Rhode Island: Open-File Report 2013-1003, U.S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details:
    1 DVD-ROM

    This publication provides a geological interpretation of NOAA survey H12023.

    McMullen, K.Y., Poppe, L.J., Ackerman, S.D., Blackwood, D.S., Glomb, K.A., and Wood, D.A., 2014, Sea-floor geology in northwestern Block Island Sound, Rhode Island: Open-File Report 2014-1018, U.S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details:
    1 DVD-ROM

    This publication provides a geological interpretation of NOAA survey H12296.

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?

    Horizontal position of the launches acquiring multibeam bathymetry were determined using GPS corrected by U.S. Coast Guard differential GPS beacon stations at Moriches, NY and Acushnet, MA. The final CARIS combined base surfaces for the MBES data were produced at a 2-m cell size.

  3. How accurate are the heights or depths?

    Attitude of the launches (e.g. pitch, roll, and heave) acquiring multibeam bathymetry were monitored by an Applanix TSS POS/MV 320 Version 3 GPS aided navigation system. Verified water levels are based on National Water Level Observation Network (NWLON) stations 8461490, New London, CT; 8452660, Newport, RI; 8510560, Montauk, NY; and 8448725, Menemsha Harbor, MA. The vertical resolution of the multibeam data is approximately 0.5% of the water depth.

  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?

    No additional checks for 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:
Data are not to be used for navigation purposes.

Public domain data are freely redistributable with proper metadata and source attribution. Please recognize the National Oceanic and Atmospheric Administration (NOAA) and U.S. Geological Survey (USGS) as the originators of this information.

  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 02543-1598
    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

  3. What legal disclaimers am I supposed to read?

    Neither the U.S. Government, the Department of the Interior, nor the USGS, nor the National Oceanic and Atmospheric Administration (NOAA), nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. 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. 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?

    The user must have a program capable of reading the Esri grid data format. The user must have software capable of uncompressing archived zip files, such as WinZip or Pkware.

Who wrote the metadata?

Dates:
Last modified: 04-Feb-2014
Metadata author:
Larry 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

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

Generated by mp version 2.8.25 on Tue Feb 04 08:30:54 2014