H11251_1MSSS_GEO.TIF: Enhanced Grayscale TIFF Image of the 1-m Sidescan-Sonar Data From National Oceanic and Atmospheric Administration (NOAA) Survey H11251 Offshore of Rocky Point, New York (Geographic, WGS84)

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

Frequently-anticipated questions:

What does this data set describe?

Title:
H11251_1MSSS_GEO.TIF: Enhanced Grayscale TIFF Image of the 1-m Sidescan-Sonar Data From National Oceanic and Atmospheric Administration (NOAA) Survey H11251 Offshore of Rocky Point, New York (Geographic, WGS84)
Abstract:
The U.S. Geological Survey (USGS), in cooperation with the National Oceanic and Atmospheric Administration (NOAA), is producing detailed geologic maps of the coastal sea floor. Bathymetry and sidescan-sonar imagery, originally collected by NOAA for charting purposes, provides a fundamental framework for research and management activities in Long Island Sound, shows the composition and terrain of the seabed, and provides information on sediment transport and benthic habitat. During October 2008 NOAA completed hydrographic survey H11251 offshore of Rocky Point, New York and during November 2009, bottom photographs and surficial sediment data were acquired as part of a ground-truth reconnaissance survey of this area. Interpretive data layers were derived from the multibeam echo-sounder and sidescan-sonar data and the ground-truth data used to verify them. For more information on the ground-truth survey see <http://quashnet.er.usgs.gov/data/2009/09059/>
  1. How should this data set be cited?

    U.S. Geological Survey, and National Oceanic and Atmospheric Administration, 2010, H11251_1MSSS_GEO.TIF: Enhanced Grayscale TIFF Image of the 1-m Sidescan-Sonar Data From National Oceanic and Atmospheric Administration (NOAA) Survey H11251 Offshore of Rocky Point, New York (Geographic, WGS84): Open-File Report 2010-1007, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Coastal and Marine Science Center, Woods Hole, MA.

    Online Links:

    Other_Citation_Details: Also available on DVD-ROM
    This is part of the following larger work.

    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, Coastal and Marine Geology Program, Woods Hole Coastal and Marine Science Center, Woods Hole, MA.

    Online Links:

    Other_Citation_Details: 1 DVD-ROM

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -72.412008
    East_Bounding_Coordinate: -72.316839
    North_Bounding_Coordinate: 41.163924
    South_Bounding_Coordinate: 41.099974

  3. What does it look like?

    <https://pubs.usgs.gov/of/2010/1007/data/sidescan/geo/h11251_1msss_geo.gif> (GIF)
    Thumbnail image showing the sidescan sonar imagery produced from data collected during NOAA survey H11251 in a geographic coordinate system

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

    Beginning_Date: 07-Oct-2008
    Ending_Date: 27-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 7114 x 10587 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 0.000009. Longitudes are given to the nearest 0.000009. 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.

  7. How does the data set describe geographic features?

    Entity_and_Attribute_Overview:
    A continuous-coverage sidescan sonar-image of NOAA survey H11251 in geographic. Data values in this grayscale image range from 0-254; 255 is the 'no data' value.

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

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

Why was the data set created?

To release a GeoTIFF of the 1-m, 455-kHz sidescan-sonar data generated during NOAA survey H11251 Offshore of Rocky Point, New York, in a geographic, WGS84 coordinate system.

How was the data set created?

  1. From what previous works were the data drawn?

    (source 1 of 1)
    Type_of_Source_Media: DVD-ROM
    Source_Contribution:
    Original sidescan-sonar data acquired with a Klein T-5000 system during NOAA survey H11251 aboard a launch deployed from the NOAA ship Thomas Jefferson.

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

    Date: 2008 (process 1 of 8)
    The sidescan-sonar data were acquired with a Klein T-5000 sidescan-sonar system hull mounted to an 8.5-m aluminum launch deployed from the NOAA ship Thomas Jefferson. The system was set to sweep 100 m to either side of the launch tracks. The sonar systems emitted two (port and starboard) 50°-wide beams tilted down 20° from horizontal, and transmitted at 455 kHz. The data were acquired in XTF (extended Triton data format), recorded digitally through an ISIS data acquisition system, and processed using CARIS SIPS (Sidescan Image Processing) software for quality control, and to produce a composite sidescan-sonar image at 1-m horizontal resolution. As part of this process, the sidescan-sonar data were demultiplexed and filtered to remove speckle noise and correct for slant-range distortions. Image 'shine through', to account for areas of overlap, and auto-contrast adjustment were applied. Contrast enhancement based on the dynamic range of the data was applied to the mosaic and it was then projected into UTM Zone 18, NAD83 to produce the GeoTIFF.

    Person who carried out this activity:

    National Oceanic and Atmospheric Administration
    c/o Jasper Schaer
    Field Operations Officer
    439 W. York Street
    Norfolk, VA 23510
    USA

    757-441-6746 (voice)
    jasper.schaer@noaa.gov

    Data sources produced in this process:
    • h11251_ss100mosaic_1mres.tif

    Date: 2010 (process 2 of 8)
    The image was imported into Adobe Photoshop CS2 in order to apply a linear stretch (i.e., increase the dynamic range of the data), to change image from RGB to 8-bit grayscale, to invert the grayscale to make strong reflections light tones and weak reflections returns darker tones, and to correct tonal artifacts caused by improper cross-track normalization.

    Person who carried out this activity:

    Katherine McMullen
    U.S. Geological Survey
    Field and Laboratory Technician
    384 Woods Hole Road
    Woods Hole, MA 02543-1598

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

    Data sources used in this process:
    • h11251_ss100mosaic_1mres.tif

    Data sources produced in this process:

    • h11251_1msss_utm18.tif

    Date: 2010 (process 3 of 8)
    ArcToolbox - Data Management Tools - Projections and Transformations - Define Projection Tool was used to define projection at UTM Zone 18 NAD83 in ArcGIS 9.2.

    Person who carried out this activity:

    Katherine McMullen
    U.S. Geological Survey
    Field and Laboratory Technician
    384 Woods Hole Road
    Woods Hole, MA 02543-1598

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

    Data sources used in this process:
    • h11251_1msss_utm18.tif

    Data sources produced in this process:

    • h11251_1msss_utm18.aux

    Date: 2010 (process 4 of 8)
    The UTM sidescan-sonar image was projected from UTM Zone 18 NAD83 to geographic WGS 84 using transformation 1, bilinear resampling technique and default output cell size, in ArcGIS 9.2 with the ArcToolbox - Data Management Tools - Projections and Transformations - Raster - Project Raster Tool.

    Person who carried out this activity:

    Katherine McMullen
    U.S. Geological Survey
    Field and Laboratory Technician
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

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

    Data sources used in this process:
    • h11251_1msss_utm18.tif

    Data sources produced in this process:

    • h11251_1msss_geo.tif

    Date: 2010 (process 5 of 8)
    GeoTiffExamine was used to create a world file (.tfw).

    Person who carried out this activity:

    Katherine McMullen
    U.S. Geological Survey
    Field and Laboratory Technician
    384 Woods Hole Road
    Woods Hole, MA 02543-1598
    USA

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

    Data sources used in this process:
    • h11251_1msss_geo.tif

    Data sources produced in this process:

    • h11251_1msss_geo.tfw

    Date: 2010 (process 6 of 8)
    PhotoShop CS was used to convert the black border to white with the Paint Bucket tool and , and to assign a 'NO DATA' value (255).

    Person who carried out this activity:

    Katherine McMullen
    U.S. Geological Survey
    Field and Laboratory Technician
    384 Woods Hole Road
    Woods Hole, MA USA
    02543-1598

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

    Data sources used in this process:
    • h11251_1msss_geo.tif

    Data sources produced in this process:

    • h11251_1msss_geo.tif

    Date: 2010 (process 7 of 8)
    Because saving a file in Photoshop CS2 removes the georeferencing information, GeoTIFFExamine was used to re-add the georeferencing information to the header of the image, making it a GeoTIFF.

    Person who carried out this activity:

    Katherine McMullen
    U.S. Geological Survey
    Field and Laboratory Technician
    384 Woods Hole Road
    Woods Hole, MA 02543
    USA

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

    Data sources used in this process:
    • h11251_1msss_geo.tif
    • h11251_1msss_geo.tfw

    Data sources produced in this process:

    • h11251_1msss_geo.tif

    Date: 2010 (process 8 of 8)
    ArcToolbox - Data Management Tools - Projections and Transformations - Define Projection Tool was used to define the projection as Geographic WGS84 in ArcGIS 9.2.

    Person who carried out this activity:

    Katherine McMullen
    U.S. Geological Survey
    Field and Laboratory Technician
    384 Woods Hole Road
    Woods Hole, MA 02543

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

    Data sources used in this process:
    • h11251_1msss_geo.tif

    Data sources produced in this process:

    • h11251_1msss_geo.aux

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

    Schattgen, P. Tod , 2008, H11251: Descriptive Report H11251, National Ocean Survey, National Oceanic and Atmospheric Administration, Atlantic Hydrographic Branch, Norfolk, VA.

    Online Links:

    Poppe, L.J., Lewis, R.S., Signell, R.P., Knebel, H.J., Persaud, M., Denny, J.F., Parolski, K.F., and DiGiacomo-Cohen, M.L., 1999, Sidescan sonar image, surficial geologic interpretation, and bathymetry of the Long Island Sound sea floor off Roanoke Point, New York: Geological Survey Geologic Investigations Series Map Geological I-2692, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Coastal and Marine Science Center, Woods Hole, MA.

    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, Coastal and Marine Geology Program, Woods Hole Coastal and Marine Science Center, Woods Hole, MA.

    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?

    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?

    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:
Public domain data are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) and National Oceanic and Atmospheric Administration (NOAA) as the originators 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 02543-1598

    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 the Connecticut Department of Environmental Protection (CT DEP) 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, NOAA, or the CT DEP 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: 29-Mar-2010
Metadata author:
U.S. Geological Survey
c/o Larry Poppe
Geologist
384 Woods Hole Road
Woods Hole, MA 02543-1598

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 2.9.6 on Mon Mar 29 13:57:31 2010