nos_5mint: 5-meter bathymetry grid produced from 23 multibeam hydrographic surveys collected off the Delmarva Peninsula by the National Oceanic and Atmospheric Administration's National Ocean Service between 2006 and 2011 (Esri binary grid, UTM Zone 18N, WGS 84)

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Frequently anticipated questions:

What does this data set describe?

Title:
nos_5mint: 5-meter bathymetry grid produced from 23 multibeam hydrographic surveys collected off the Delmarva Peninsula by the National Oceanic and Atmospheric Administration's National Ocean Service between 2006 and 2011 (Esri binary grid, UTM Zone 18N, WGS 84)
Abstract:
Between 2006 and 2011 Science Applications International Corporation (SAIC), under contract by the National Oceanic and Atmospheric Administration's (NOAA) National Ocean Service (NOS), collected twenty-three hydrographic surveys totaling over 4100 square-kilometers of Reson multibeam bathymetric and Klein sidescan-sonar data for the purposes of updating nautical charts. Data extended from the entrance of Delaware Bay south to Parramore Island in water depths from about 3 to 35 meters below mean lower low water. Data were collected at a fixed 40-meter line spacing which provided 40-100 percent seafloor coverage for multibeam bathymetry. NOS releases processed bathymetry via an interactive map interface in bathymetry attributed grid (BAG) format. All twenty-three survey datasets were downloaded, merged, resampled, and interpolated to fill data gaps. Sidescan data products are limited within the Delmarva survey area and there are no multibeam backscatter data products available. The U.S. Geological Survey obtained the raw RESON multibeam data files from SAIC and NOAA for twenty of the hydrographic surveys and extracted the backscatter data using Quality Positioning Service's (QPS) Fledermaus FMGeocoder Toolbox (FMGT) to produce backscatter mosaics for the inner-continental shelf of the Delmarva Peninsula. Backscatter mosaics and regional seamless bathymetric datasets created from NOAA data are a valuable tool for characterizing seafloor geology, sediment transport pathways, and marine resources. Additionally, obtaining this near full seafloor coverage backscatter and bathymetry dataset from an existing source greatly increased project deliverables, geophysical survey efficiency, collaboration among government agencies, and the area over which geologic data interpretations can be conducted by the USGS.
  1. How should this data set be cited?

    National Oceanic and Atmospheric Administration's National Ocean Service, and U.S. Geological Survey, 2015, nos_5mint: 5-meter bathymetry grid produced from 23 multibeam hydrographic surveys collected off the Delmarva Peninsula by the National Oceanic and Atmospheric Administration's National Ocean Service between 2006 and 2011 (Esri binary grid, UTM Zone 18N, WGS 84): Open-File Report 2014-1262, 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.

    Pendleton, E.A., Brothers, L.L., Theiler, E.R., Danforth, W.W., and Parker, C.E., 2015, National Oceanic and Atmospheric Administration Hydrographic Survey Data Collected Offshore of the Delmarva Peninsula Reprocessed and Repurposed for a U.S. Geological Survey Regional Geologic Framework Study: Open-File Report 2014-1262, U.S. Geological Survey, Reston, VA.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -75.655396
    East_Bounding_Coordinate: -74.570266
    North_Bounding_Coordinate: 38.814829
    South_Bounding_Coordinate: 37.456622

  3. What does it look like?

    <https://pubs.usgs.gov/of/2014/1262/DATA/Bathy/bathy_5m.png> (png)
    thumbnail image of regional bathymetric grid for Delmarva Peninsula

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

    Beginning_Date: 01-Jun-2006
    Ending_Date: 30-Sep-2011
    Currentness_Reference: ground condition

  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 30101 x 18842 x 1, type Grid Cell

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

      Planar coordinates are encoded using row and column
      Abscissae (x-coordinates) are specified to the nearest 5.000000
      Ordinates (y-coordinates) are specified to the nearest 5.000000
      Planar coordinates are specified in meters

      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.

      Vertical_Coordinate_System_Definition:
      Depth_System_Definition:
      Depth_Datum_Name: Mean lower low water tidal datum
      Depth_Resolution: .1
      Depth_Distance_Units: meters
      Depth_Encoding_Method: Attribute values

  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?

    National Oceanic and Atmospheric Administration, National Ocean Service, National Geophysical Data Center, U.S. Geological Survey

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

    Elizabeth Pendleton
    U.S. Geological Survey
    Geologist
    U.S. Geological Survey
    Woods Hole, MA 02543

    (508) 548-8700x2259 (voice)
    (508)-457-2310 (FAX)
    ependleton@usgs.gov

Why was the data set created?

This 5-m interpolated bathymetric surface was created from 23 NOAA-NOS hydrographic survey datasets at varying resolutions. A high-resolution seamless bathymetric grid is a useful geophysical dataset for geologic framework studies. USGS resampled, interpolated, and merged these NOAA surveys into one seamless dataset to use in a geologic framework investigation.

How was the data set created?

  1. From what previous works were the data drawn?

    Reson 8101 (source 1 of 2)
    NOAA-NOS, 2009-2011, NOAA Hydrographic Surveys using Reson 8101 MBES along the Delmarva Peninsula: Descriptive Reports H11554, H11555, H11647, H11648, H11649, H11650, H11872, H11873, H11874, H11992, and H12161., Leidos (formerly SAIC), Newport, RI.

    Online Links:

    Other_Citation_Details:
    11 Reson 8101 surveys were used to construct this regional dataset. The descriptive reports are listed in the Source Information and an inclusive citation is shown here. The data and accompanying reports were accessed on September 12, 2014 through NGDC via the online linkage URL.
    Type_of_Source_Media: online
    Source_Contribution:
    These hydrographic reports and data provided the source Reson 8101 multibeam bathymetry data that went into this regional grid. The data were acquired between 2006 and 2011 by SAIC for NOAA aboard M/V Atlantic Surveyor. A hull-mounted RESON SeaBat 8101(240 kHz) was used to acquire the multibeam echosounder data. Below is a list of references for the individual H-survey descriptive reports that used the Reson 8101 and are included in the regional bathymetry grid. Survey data can be downloaded through the NGDC's Interactive Map Interface to NOS Data and Products (<http://maps.ngdc.noaa.gov/viewers/bathymetry/?layers=nos_hydro&minx=-200&maxx=-50&miny=10&maxy=70>). Accessed on September 12, 2014
    National Oceanic and Atmospheric Administration, 2006, Descriptive report for survey H11554, Project No. OPR-D302-KR-06: National Ocean Service, National Oceanic and Atmospheric Administration, SAIC Doc 06-TR-015, accessed September 12, 2014 at <http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11554/DR/H11554.pdf>
    National Oceanic and Atmospheric Administration, 2006, Descriptive report for survey H11555, Project No. OPR-D302-KR-06: National Ocean Service, National Oceanic and Atmospheric Administration, SAIC Doc 06-TR-016, accessed September 12, 2014 at <http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11555/DR/H11555.pdf>
    National Oceanic and Atmospheric Administration, 2007, Descriptive report for survey H11647, Project No. OPR-D302-KR-07: National Ocean Service, National Oceanic and Atmospheric Administration, SAIC Doc 07-TR-008, accessed September 12, 2014 at <http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11647/DR/H11647.pdf>
    National Oceanic and Atmospheric Administration, 2007, Descriptive report for survey H11648, Project No. OPR-D302-KR-07: National Ocean Service, National Oceanic and Atmospheric Administration, SAIC Doc 07-TR-009, accessed September 12, 2014 at <http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11648/DR/H11648.pdf>
    National Oceanic and Atmospheric Administration, 2007, Descriptive report for survey H11649, Project No. OPR-D302-KR-07: National Ocean Service, National Oceanic and Atmospheric Administration, SAIC Doc 07-TR-010, accessed September 12, 2014 at <http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11649/DR/H11649.pdf>
    National Oceanic and Atmospheric Administration, 2007, Descriptive report for survey H11650, Project No. OPR-D302-KR-07: National Ocean Service, National Oceanic and Atmospheric Administration, SAIC Doc 07-TR-011, accessed September 12, 2014 at <http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11650/DR/H11650.pdf>
    National Oceanic and Atmospheric Administration, 2008, Descriptive report for survey H11872, Project No. OPR-D302-SA-08: National Ocean Service, National Oceanic and Atmospheric Administration, SAIC Doc 09-TR-035, accessed September 12, 2014 at <http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11872/DR/H11872.pdf>
    National Oceanic and Atmospheric Administration, 2008, Descriptive report for survey H11873, Project No. OPR-D302-SA-08: National Ocean Service, National Oceanic and Atmospheric Administration, SAIC Doc 09-TR-043, accessed September 12, 2014 at <http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11873/DR/H11873.pdf>
    National Oceanic and Atmospheric Administration, 2008, Descriptive report for survey H11874, Project No. OPR-D302-SA-08: National Ocean Service, National Oceanic and Atmospheric Administration, SAIC Doc 09-TR-044, accessed September 12, 2014 at <http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11874/DR/H11874.pdf>
    National Oceanic and Atmospheric Administration, 2008, Descriptive report for survey H11992, Project No. OPR-D302-SA-08: National Ocean Service, National Oceanic and Atmospheric Administration, SAIC Doc 09-TR-045, accessed September 12, 2014 at <http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11992/DR/H11992.pdf>
    Oceanic and Atmospheric Administration, SAIC Doc 11-TR-003, accessed September 12, 2014 at <http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H12001-H14000/H12161/DR/H12161.pdf>

    Reson 7125 (source 2 of 2)
    NOAA-NOS, 2006-2010, NOAA Hydrographic Surveys using Reson 7125 MBES along the Delmarva Peninsula: Descriptive Reports H12001, H12002, H12003, H12091, H12092, H12093, H12094, H12160, H12336, H12337, H12338, and H12339, Leidos (formerly SAIC), Newport, RI.

    Online Links:

    Other_Citation_Details:
    12 Reson 7125 surveys were used to construct this regional dataset. The descriptive reports are listed in the Source Information and an inclusive citation is shown here. The data and accompanying reports can be accessed through NGDC via the online linkage URL.
    Type_of_Source_Media: online
    Source_Contribution:
    These hydrographic reports and data provided the source Reson 7125 multibeam bathymetry data that went into this regional grid. The data were acquired between 2010 and 2011 by SAIC for NOAA aboard M/V Atlantic Surveyor. A hull-mounted RESON SeaBat 7125 (200 and 400 kHz) was used to acquire the multibeam echosounder data. Below is a list of references for the individual H-survey descriptive reports that used the Reson 7125 and are included in the regional bathymetry grid. Survey data can be downloaded through the NGDC's Interactive Map Interface to NOS Data and Products (<http://maps.ngdc.noaa.gov/viewers/bathymetry/?layers=nos_hydro&minx=-200&maxx=-50&miny=10&maxy=70>). Accessed on September 12, 2014
    National Oceanic and Atmospheric Administration, 2009, Descriptive report for survey H12001, Project No. OPR-D302-SA-09: National Ocean Service, National Oceanic and Atmospheric Administration, SAIC Doc 10-TR-001, accessed September 12, 2014 at <http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H12001-H14000/H12001/DR/H12001.pdf>
    National Oceanic and Atmospheric Administration, 2010, Descriptive report for survey H12002, Project No. OPR-D302-SA-09: National Ocean Service, National Oceanic and Atmospheric Administration, SAIC Doc 10-TR-002, accessed September 12, 2014 at <http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H12001-H14000/H12002/DR/H12002.pdf>
    National Oceanic and Atmospheric Administration, 2010, Descriptive report for survey H12003, Project No. OPR-D302-SA-09: National Ocean Service, National Oceanic and Atmospheric Administration, SAIC Doc 10-TR-003, accessed September 12, 2014 at <http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H12001-H14000/H12003/DR/H12003.pdf>
    National Oceanic and Atmospheric Administration, 2010, Descriptive report for survey H12091, Project No. OPR-D302-SA-09: National Ocean Service, National Oceanic and Atmospheric Administration, SAIC Doc 10-TR-004, accessed September 12, 2014 at <http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H12001-H14000/H12091/DR/H12091.pdf>
    National Oceanic and Atmospheric Administration, 2010, Descriptive report for survey H12092, Project No. OPR-D302-SA-09: National Ocean Service, National Oceanic and Atmospheric Administration, SAIC Doc 10-TR-030, accessed September 12, 2014 at <http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H12001-H14000/H12092/DR/H12092.pdf>
    National Oceanic and Atmospheric Administration, 2010, Descriptive report for survey H12093, Project No. OPR-D302-SA-09: National Ocean Service, National Oceanic and Atmospheric Administration, SAIC Doc 11-TR-001, accessed September 12, 2014 at <http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H12001-H14000/H12093/DR/H12093.pdf>
    National Oceanic and Atmospheric Administration, 2010, Descriptive report for survey H12094, Project No. OPR-D302-SA-09: National Ocean Service, National Oceanic and Atmospheric Administration, SAIC Doc 10-TR-040, accessed September 12, 2014 at <http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H12001-H14000/H12094/DR/H12094.pdf>
    National Oceanic and Atmospheric Administration, 2011, Descriptive report for survey H12160, Project No. OPR-D302-KR-10: National Ocean Service, National Oceanic and Atmospheric Administration, SAIC Doc 11-TR-005, accessed September 12, 2014 at <http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H12001-H14000/H12160/DR/H12160.pdf>
    National Oceanic and Atmospheric Administration, 2011, Descriptive report for survey H12336, Project No. OPR-D302-KR-11: National Ocean Service, National Oceanic and Atmospheric Administration, SAIC Doc 11-TR-030, accessed September 12, 2014 at <http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H12001-H14000/H12336/DR/H12336.pdf>
    National Oceanic and Atmospheric Administration, 2011, Descriptive report for survey H12337, Project No. OPR-D302-KR-11: National Ocean Service, National Oceanic and Atmospheric Administration, SAIC Doc 12-TR-003, accessed September 12, 2014 at <http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H12001-H14000/H12337/DR/H12337.pdf>
    National Oceanic and Atmospheric Administration, 2011, Descriptive report for survey H12338, Project No. OPR-D302-KR-11: National Ocean Service, National Oceanic and Atmospheric Administration, SAIC Doc 12-TR-004, accessed September 12, 2014 at <http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H12001-H14000/H12338/DR/H12338.pdf>
    National Oceanic and Atmospheric Administration, 2011, Descriptive report for survey H12339, Project No. OPR-D302-KR-11: National Ocean Service, National Oceanic and Atmospheric Administration, SAIC Doc 12-TR-005, accessed September 12, 2014 at <http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H12001-H14000/H12339/DR/H12339.pdf>

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

    Date: 25-Aug-2014 (process 1 of 4)
    Each of the 23 Hydrographic surveys used to create this regional grid were downloaded from NGDC as BAG files. The horizontal resolution of individual BAG files varied from 50-cm to 4-m and some surveys were made up of more than 1 BAG file. Each BAG was downloaded and imported into QPS fledermaus software (version 7.4.1) and converted to an SD file. For surveys with multiple BAG files, 'surfacemerge' in QPS FMcommand (version 7.4.1) was used to merge the individual SD files into one file per survey. This process step and all of the following process steps were completed by the following Process Contact:

    Person who carried out this activity:

    Elizabeth Pendleton
    U.S. Geological Survey
    Geologist
    U.S. Geological Survey
    Woods Hole, MA 02543

    (508) 548-8700x2259 (voice)
    (508)-457-2310 (FAX)
    ependleton@usgs.gov

    Date: 26-Aug-2014 (process 2 of 4)
    After merging files within surveys, each survey SD file was interpolated for 5-iterations in QPS Fledermaus (version 7.4.1) to fill gaps between adjacent survey lines in shallow water areas. Gaps along the landward boundary, especially near inlets and shoals, were allowed to persist after 5 -iterations and one internal gap in survey H12094 was left unfilled because ship tracklines did not cross over the shoalest point. Each survey SD was resampled with Fledermaus to 5-m resolution and exported as a 32-bit GeoTIFF.

    Date: 30-Aug-2014 (process 3 of 4)
    Survey GeoTIFFs were brought into ArcMap (version 10.2) in their original horizontal and vertical coordinate systems. The GeoTIFFS were reprojected from NAD83 UTM Zone 19N to WGS84 UTM Zone 19N using the reproject toolbox and the NAD83_to_WGS84_5 transformation. The 23 reprojected survey grids were then mosaicked into one raster dataset with no blending of grid values. The grids were mosaicked in by the order of their collection, so newest data were on top in overlapping areas.

    Date: 30-Aug-2014 (process 4 of 4)
    The combined 5-m raster dataset within a larger project geodatabase was then exported to a stand-alone Esri binary grid (ArcCatalog 10.2). Vertical coordinates were unchanged from the original .bag grids in MLLW tidal datum and final horizontal coordinates were in WGS84 UTM Zone 19N.

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

    Organization, International Hydrographic, 2008, IHO Standards for Hydrographic Surveys: Special Publication 44, International Hydrographic Bureau, Monaco.

    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?

    Data collected under contract with NOAA for Nautical Charting must conform to IHO (International Hydrographic Organization) S-44 standards, which is 5-meters + 5% of water depth, horizontally in areas where under-keel clearance is of concern. This ensures that any sounding that falls outside of the maximum allowable horizontal position offset will not be used in depth calculations. Positioning confidence checks are performed daily during hydrographic surveys for NOAA and these checks can be viewed for the individual descriptive reports (see the source data for links to reports).

  3. How accurate are the heights or depths?

    Data collected under contract with NOAA for Nautical Charting must conform to IHO (International Hydrographic Organization) S-44 standards, which is 0.5-meters vertically in areas where under-keel clearance is of concern. See the source data section for links to the report and a more detailed description of the vertical accuracy of individual hydrographic surveys.

  4. Where are the gaps in the data? What is missing?

    This grid includes Reson 8101 and 7125 multibeam data collected during 23 M/V Atlantic Surveyor cruises conducted by SAIC for the purposes of updating NOAA nautical charts. The individual hydrographic survey grids can be downloaded by visiting NGDC's Interactive Map Interface to NOS Data and Products: <http://www.ngdc.noaa.gov/mgg/bathymetry/hydro.html>

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

    This bathymetric grid was created from several smaller NOAA-NOS multibeam datasets that were published by NGDC in BAG format at varying resolutions (50-centimeters to 4-meters; see Source Information for individual source survey information). In order to create a seamless bathymetric surface all BAG files were resampled, interpolated, and merged into a 5-m Esri format grid. No further data processing was conducted on the individual input datasets. These datasets are hydrographic data surveys collected to update NOAA nautical charts. You can download the source data from the NGDC Interactive Map Interface to NOS Data and Products <http://www.ngdc.noaa.gov/mgg/bathymetry/hydro.html>. You can also download the source data listed in the source contributions from this page.

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: Not to be used for navigation.

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

    Elizabeth A. Pendleton
    U.S. Geological Survey
    Geologist
    384 Woods Hole Rd.
    Woods Hole, MA 02543-1598

    (508) 548-8700x2259 (voice)
    (508) 457-2310 (FAX)
    ependleton@usgs.gov

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

    USGS Open-File Report 2014-1262 bathymetry grid from the Delmarva Peninusla (NOS_5m_interpolated_GRD.zip). The zip file contains a folder with the following an Esri formated grid (nos_5mint). A browse graphic (bathy_5m.png) and FGDC CSDGM metadata files (nos_5mint.xml) in four standard formats are also included in the zip file.

  3. What legal disclaimers am I supposed to read?

    Neither the U.S. Government, the Department of the Interior, the U.S. Geological Survey (USGS), 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. Is there some other way to get the data?

    none

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

    The grid contained in the ZIP file is available as an Esri binary grid. To utilize this data, the user must have a GIS software package capable of reading an Esri binary grid. The uncompressed grid is over 2 GB in size.

Who wrote the metadata?

Dates:
Last modified: 17-Sep-2014
Metadata author:
Elizabeth A. Pendleton
U.S. Geological Survey
Geologist
U.S. Geological Survey
Woods Hole, MA 02543-1598
USA

508-548-8700 x2259 (voice)
508-457-2310 (FAX)
ependleton@usgs.gov

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

Generated by mp version 2.9.21 on Wed Dec 24 10:45:04 2014