Color Shaded-Relief GeoTIFF Image Showing the 2-m Bathymetry Generated from National Oceanic and Atmospheric Administration (NOAA) Survey H11445 North of Plum Island, New York (H11445_MB2M_GEO.TIF, Geographic, WGS84)

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Frequently anticipated questions:

What does this data set describe?

Title:
Color Shaded-Relief GeoTIFF Image Showing the 2-m Bathymetry Generated from National Oceanic and Atmospheric Administration (NOAA) Survey H11445 North of Plum Island, New York (H11445_MB2M_GEO.TIF, Geographic, WGS84)
Abstract:
The U.S. Geological Survey (USGS), in cooperation with the Connecticut Department of Environmental Protection and National Oceanic and Atmospheric Administration (NOAA), is producing detailed geologic maps of the coastal sea floor. Imagery, originally collected by NOAA for charting purposes, provides a fundamental framework for research and management activities along this part of Long Island Sound, shows the composition and terrain of the seabed, and provides information on sediment transport and benthic habitat. Interpretive data layers were derived from the multibeam echo-sounder data and sidescan-sonar data collected north of Plum Island, New York. During November 2009, bottom photographs and surficial sediment data were acquired as part of a ground-truth reconnaissance survey. For more information on the ground-truth survey see http://quashnet.er.usgs.gov/data/2009/09059/.
  1. How might this data set be cited?
    National Oceanic and Atmospheric Administration, and U.S. Geological Survey, 2010, Color Shaded-Relief GeoTIFF Image Showing the 2-m Bathymetry Generated from National Oceanic and Atmospheric Administration (NOAA) Survey H11445 North of Plum Island, New York (H11445_MB2M_GEO.TIF, Geographic, WGS84): Open-File Report 2010-1005, 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.

    McMullen, K.Y., Poppe, L.J., Danforth, W.W., Blackwood, D.S., Schaer, J.D., Ostapenko, A.J., Glomb, K.A., and Doran, E.F., 2010, Surficial Geology of the Sea Floor in Long Island Sound Offshore of Plum Island, New York: Open-File Report 2010-1005, U.S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details: CD-ROM
  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -72.238362
    East_Bounding_Coordinate: -72.141343
    North_Bounding_Coordinate: 41.212324
    South_Bounding_Coordinate: 41.157263
  3. What does it look like?
    http://pubs.usgs.gov/of/2010/1005/data/bathy/geotifs/geo/h11445_mb2m_geo.gif (GIF)
    Thumbnail image of the GeoTIFF showing the 2-m color hill-shaded bathymetry collected during NOAA survey H11445 in geographic
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 16-Sep-2008
    Ending_Date: 01-Oct-2008
    Currentness_Reference:
    ground condition
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: remote-sensing image
  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 2572 x 4532 x 1, type Pixel
    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 0.000021. Longitudes are given to the nearest 0.000021. Latitude and longitude values are specified in decimal degrees. 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
      Depth_Resolution: 9999
      Depth_Distance_Units: meters
      Depth_Encoding_Method: Implicit coordinate
  7. How does the data set describe geographic features?
    Entity_and_Attribute_Overview:
    There are no attributes associated with the GeoTIFF image. Pixel values convey RGB values of individual cells. Warmer colors (e.g. red) are shallower depths; cooler colors (e.g. blues) are deeper.
    Entity_and_Attribute_Detail_Citation: U.S. Geological Survey

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • National Oceanic and Atmospheric Administration
    • 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: Katherine McMullen
    Sediment Lab Technician
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2277 (voice)
    (508) 457-2310 (FAX)
    kmcmullen@usgs.gov

Why was the data set created?

To release a color shaded-relief GeoTIFF of the 2-m bathymetry generated from NOAA survey H11445 north of Plum Island, New York in geographic, WGS84 coordinates.

How was the data set created?

  1. From what previous works were the data drawn?
    Information unavailable from original metadata. (source 1 of 1)
    National Ocean Survey, National Oceanic and Atmospheric Administration, Unpublished Material, H11445 bathymetry.

    Type_of_Source_Media: disc
    Source_Contribution: Original processed multibeam bathymetric data.
  2. How were the data generated, processed, and modified?
    Date: 2008 (process 1 of 15)
    Bathymetric data were acquired in extended Triton data format (XTF) and recorded digitally through an ISIS data acquisition system. Reson 8101 and 8125 multibeam echosounders hull-mounted on two 29' launches deployed from the NOAA ship Thomas Jefferson were used to acquire the sounding data. All positioning and attitude were determined with Trimble DSM212L DGPS receivers and Applanix POS/MV Model 320 v.4 inertial navigation systems. The data were processed using CARIS HIPS (Hydrographic Image Processing System) software for quality control, and to incorporate sound velocity and tidal corrections. Sound velocity corrections were derived using frequent SEACAT CTD (conductivity-temperature-depth) profiles. Typically, a CTD cast was conducted every three to four hours of multibeam acquisition. Tidal zone corrections were calculated from data acquired at the New London, Thames River, CT tidal gauge. The vertical resolution of the multibeam data is approximately 0.5% of the water depth. The data were gridded to 2-m resolution and saved as a CARIS HIPS database. Vertical datum is mean lower low water; X and Y units are meters; UTM Zone 18, NAD83. Person who carried out this activity:
    National Oceanic and Atmospheric Administration
    Attn: Jasper Schaer
    Field Operations Officer
    439 West York Street
    Norfolk, VA
    USA

    757-441-6726 (voice)
    jasper.schaer@noaa.gov
    Data sources produced in this process:
    • CARIS HIPS database
    Date: 2009 (process 2 of 15)
    The fieldsheet from survey H11445 (average depths, not the shoal based fieldsheets) was imported into the Fledermaus v6.7 program DMagic to make an equivalent digital terrain model (DTM) file. The floating point format for each sounding depth point is preserved during data import. Additionally, this fieldsheet was imported into DMagic as "gridded data", therefore re-gridding of data did not occur during the import process and thus preserved the original resolutions of the CARIS fieldsheet: H11445 2 meter cell size. Projection information for the H11445 CARIS fieldsheet is: UTM Zone 18N NAD 83. Person who carried out this activity:
    Bill Danforth
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2274 (voice)
    508-457-2310 (FAX)
    bdanforth@usgs.gov
    Data sources used in this process:
    • CARIS HIPS database
    Data sources produced in this process:
    • h11445_2m.dtm
    Date: 2009 (process 3 of 15)
    The H11445 DTM file was then exported as an ESRI ASCII raster file from the DMagic program (H11445_2m.asc). The export process preserves the floating point values of the grid cell nodes. Person who carried out this activity:
    Bill Danforth
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA
    USA

    508-548-8700 x2274 (voice)
    508-457-2310 (FAX)
    bdanforth@usgs.gov
    Data sources used in this process:
    • h11445_2m.dtm
    Data sources produced in this process:
    • H11445_2m.asc
    Date: 2009 (process 4 of 15)
    The H11445 ESRI ASCII raster file was imported into ArcMap v9.3 using the ASCII to Raster tool (ArcToolbox, Conversion Tools, To Raster). The only option set here is to import each sounding grid cell value as a floating point number. The resulting grid, H11445_2m_utm, retains the original CARIS field sheet 2 meter grid. Person who carried out this activity:
    Bill Danforth
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2274 (voice)
    508-457-2310 (FAX)
    bdanforth@usgs.gov
    Data sources used in this process:
    • H11445_2m.asc
    Data sources produced in this process:
    • H11445_2m_utm
    Date: 2009 (process 5 of 15)
    The UTM ESRI grid was then reprojected using the data management tool Project Raster (ArcToolbox, Data Management Tools, Projections and Transformations) from UTM Zone 18N, NAD 83 to Geographic, WGS84. The options specified in the Project Raster tool were: 1. Input coordinate system: NAD_1983_UTM_Zone_18N 2. Output coordinate system: GCS_WGS_1984 3. Geographic transformation method: NAD_1983_WGS_1984_5 4. Resampling technique: BILINEAR 5. Output cell size: 0.000021 (decimal degrees, default as calculated by ArcMap for a 2 meter cell size) The geographic transformation selected is the most accurate one provided by ESRI as it ties in WGS84 with ITRF96, thus reflecting the earth centered offset (x-y-z) between WGS84 and NAD83 (from the ESRI Knowledge Base Document Number 24159). Person who carried out this activity:
    Bill Danforth
    U.S. Geological Survey
    Scientist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2274 (voice)
    508-457-2310 (FAX)
    bdanforth@usgs.gov
    Data sources used in this process:
    • H11445_2m_utm
    Data sources produced in this process:
    • h11445_2m_geo
    Date: 2009 (process 6 of 15)
    The ESRI grid, created in the previous step and projected in the Geographic Coordinate system, was imported into the Fledermaus v6.7 program DMagic (using the DMagic file type ArcView binary grid) to make an equivalent digital terrain model (DTM) file. The floating point format for each sounding depth point is preserved during data import. Additionally, this fieldsheet was imported into DMagic as "gridded data", therefore re-gridding of data did not occur during the import process. Person who carried out this activity:
    Bill Danforth
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2274 (voice)
    508-457-2310 (FAX)
    bdanforth@usgs.gov
    Data sources used in this process:
    • h11445_2m_geo
    Data sources produced in this process:
    • h11445_2m_geo.dtm
    Date: 2009 (process 7 of 15)
    In DMagic, a shaded relief image was created using the surface shader tool. Parameters: Shade direction at 0 degrees (from the north), elevation 45 degrees, vertical exaggeration 4X. Person who carried out this activity:
    Bill Danforth
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2274 (voice)
    (508) 457-2310 (FAX)
    bdanforth@usgs.gov
    Data sources used in this process:
    • h11445_2m_geo.dtm
    Data sources produced in this process:
    • h11445_2m_geo.shade
    Date: 2009 (process 8 of 15)
    Using the Fledermaus v6.7 program Imageviewer, the shaded relief image created in the previous step was exported in the TIFF image format with an associated ESRI world file containing georeferencing information. The TIFF image is projected in the Geographic coordinate system, and the spheroid is WGS84. Person who carried out this activity:
    Bill Danforth
    U.S. Geological Survey
    Geologist
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2274 (voice)
    (508) 457-2310 (FAX)
    bdanforth@usgs.gov
    Data sources used in this process:
    • h11445_2m_geo.shade
    Data sources produced in this process:
    • h11445_2m_geo_55elev.tif
    • h11445_2m_geo_55elev.tfw
    Date: 2010 (process 9 of 15)
    Used Photoshop CS2 to change the background of TIFF to white and saved without compression. Person who carried out this activity:
    Katherine McMullen
    U.S. Geological Survey
    Sediment Lab Technician
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2277 (voice)
    (508) 457-2310 (FAX)
    kmcmullen@usgs.gov
    Data sources used in this process:
    • h11445_2m_geo_55elev.tif
    Data sources produced in this process:
    • h11445_mb2m_geo.tif
    Date: 2010 (process 10 of 15)
    Copied and renamed world file, h11445_2m_geo_55elev.tfw, and used GeoTiffExamine to update the header of the TIFF to contain the georeferencing information, making the image a GeoTIFF. Person who carried out this activity:
    Katherine McMullen
    U.S. Geological Survey
    Sediment Lab Technician
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2277 (voice)
    (508) 457-2310 (FAX)
    kmcmullen@usgs.gov
    Data sources used in this process:
    • h11445_mb2m_geo.tif
    • h11445_2m_geo_55elev.tfw
    Data sources produced in this process:
    • h11445_mb2m_geo.tif
    • h11445_mb2m_geo.tfw
    Date: 2010 (process 11 of 15)
    Defined projection as WGS84 using ArcCatalog 9.2 Define Projection Tool. Person who carried out this activity:
    Katherine McMullen
    U.S. Geological Survey
    Sediment Lab Technician
    384 Woods Hole Road
    Woods Hole, MA
    USA

    (508) 548-8700 x2277 (voice)
    (508) 457-2310 (FAX)
    kmcmullen@usgs.gov
    Data sources used in this process:
    • h11445_mb2m_geo.tif
    Data sources produced in this process:
    • h11445_mb2m_geo.aux
    Date: 15-Mar-2016 (process 12 of 15)
    Edits to the metadata were made to fix any errors that MP v 2.9.32 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 coordinate system resolution and units were fixed to be in agreement with the data. In the case of the depth resolution, the value of 9999 was entered to indicate that the original metadata did not contain the required information. 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 13 of 15)
    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
    Date: 18-Nov-2019 (process 14 of 15)
    Crossref DOI link was added as the first link in the metadata. 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
    Date: 08-Sep-2020 (process 15 of 15)
    Added keywords section with USGS persistent identifier as theme keyword. 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?
    Schattgen, P. Tod, 2008, H11445: Descriptive Report H11445, National Ocean Survey, National Oceanic and Atmospheric Administration, Atlantic Hydrographic Branch, Norfolk, VA.

    Poppe, L.J., McMullen, K.Y., Ackerman, S.D., Blackwood, D.S., Irwin, B.J., Schaer, J.D., Lewit, P.G., and Doran, E.F., 2010, Sea-Floor Geology and Character Offshore of Rocky Point, New York: Open-File Report 2010-1007, U.S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details: DVD
    Poppe, L.J., DiGiacomo-Cohen, M.L., Doran, E.F., Smith, S.M., Stewart, H.F., and Forfinski, N.A., 2007, Geological interpretation and multibeam bathymetry of the sea floor in the vicinity of the Race, eastern Long Island Sound: Open-File Report 2007-1012, U.S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details: DVD
    Poppe, L.J., Denny, J.F., Williams, S.J., Moser, M.S., Forfinski, N.A., Stewart, H.F., and Doran, E.F., 2007, The geology of Six Mile Reef, eastern Long Island Sound: Open-File Report 2007-1191, U.S. Geological Survey, Reston, VA.

    Online Links:

    Other_Citation_Details: DVD

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. CARIS HIPS was used to process bathymetry data including correcting for vessel offset.
  3. How accurate are the heights or depths?
    The vertical resolution of the multibeam data is approximately 0.5% of the water depth. Although there are no depth attributes associated with the GeoTIFF image, pixel values convey RGB values of individual cells. Warmer colors (e.g. red) are shallower depths; cooler colors are deeper.
  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
    Attn: Larry Poppe
    Geologist
    384 Woods Hole Road
    Woods Hole, MA
    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?
    This image is available as a GeoTIFF image with an accompanying world file. To utilize this data, the user must have an image viewer, image processing or GIS software package capable of importing a GeoTIFF image. The user must have software capable of uncompressing archived zip files, such as WinZip or Pkware.

Who wrote the metadata?

Dates:
Last modified: 16-Nov-2021
Metadata author:
Katherine McMullen
U.S. Geological Survey
Sediment Lab Technician
384 Woods Hole Road
Woods Hole, MA
USA

(508) 548-8700 x2277 (voice)
(508) 457-2310 (FAX)
whsc_data_contact@usgs.gov
Contact_Instructions:
The metadata contact email address is a generic address in the event the metadata contact is no longer with the USGS or the email is otherwise invalid.
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
This page is <https://cmgds.marine.usgs.gov/catalog/whcmsc/open_file_report/ofr2010-1005/H11445_mb2m_geo.tif.faq.html>
Generated by mp version 2.9.50 on Tue Nov 16 10:06:38 2021