H11077_SSS100_GEO.TIF: 0.5-m Stretched Grayscale Image of the Sidescan-Sonar Data From National Oceanic and Atmospheric Administration (NOAA) Survey H11077 of the Sea Floor in the Vicinity of Woods Hole, Massachusetts (Geographic)

Metadata also available as Outline | Text

Frequently-anticipated questions:

What does this data set describe?

Title:
H11077_SSS100_GEO.TIF: 0.5-m Stretched Grayscale Image of the Sidescan-Sonar Data From National Oceanic and Atmospheric Administration (NOAA) Survey H11077 of the Sea Floor in the Vicinity of Woods Hole, Massachusetts (Geographic)
Abstract:
The U.S. Geological Survey (USGS), in cooperation with the National Oceanic and Atmospheric Administration (NOAA) and the Massachusetts Office of Coastal Zone Management (MA CZM), 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 the Massachusetts coastline, shows the composition and terrain of the seabed, and provides information on sediment transport and benthic habitat. Interpretive data layers were derived from multibeam echo-sounder and sidescan-sonar data collected in the vicinity of Woods Hole, a passage between the Elizabeth Islands and Cape Cod, Massachusetts. In November 2007, bottom photographs, seismic-reflection profiles, and surficial sediment data were acquired as part of a ground-truth reconnaissance survey.
  1. How should this data set be cited?

    U.S. Geological Survey, and National Oceanic and Atmospheric Administration, 2008, H11077_SSS100_GEO.TIF: 0.5-m Stretched Grayscale Image of the Sidescan-Sonar Data From National Oceanic and Atmospheric Administration (NOAA) Survey H11077 of the Sea Floor in the Vicinity of Woods Hole, Massachusetts (Geographic): Open-File Report 2008-1004, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole 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., Foster, D.S., Blackwood, D.S., Williams, S.J., Ackerman, S.D., Barnum, S.R., and Brennan, R.T., 2008, Sea-Floor Character and Sedimentary Processes in the Vicinity of Woods Hole, Massachusetts: Open-File Report 2008-1004, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole 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:
    East_Bounding_Coordinate:
    North_Bounding_Coordinate:
    South_Bounding_Coordinate:

  3. What does it look like?

    <http://pubs.usgs.gov/of/2008/1004/data/sidescan/geo/h11077_sss100_geo.gif> (GIF)
    Thumbnail image showing the sidescan sonar imagery produced from data collected during NOAA survey H11077 in a geographic coordinate system

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

    Beginning_Date: 05-Sep-2001
    Ending_Date: 09-Sep-2001
    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 5162 x 6227 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 0.000001. Longitudes are given to the nearest 0.000001. Latitude and longitude values are specified in Decimal degrees.

      The horizontal datum used is D_WGS_84.
      The ellipsoid used is WGS84.

  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?

  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 455-kHz sidescan-sonar data generated during NOAA survey H11077 in the vicinity of Woods Hole, in a geographic 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 Klein T-5000 echosounders during NOAA survey H11077 aboard a launch deployed from the NOAA ship Whiting.

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

    Date: Unknown (process 1 of 7)
    The sidescan-sonar data were acquired with a Klein T5000 sidescan-sonar system hull mounted to a 29' aluminum launch deployed from the NOAA ship Whiting. The system was set to sweep 100 m to either side of the launch tracks. The system emits port and starboard 50°-wide beams tilted down 20° from horizontal, and transmits 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 0.5-m horizontal resolution. As part of this process, the sidescan-sonar data were demultiplexed and filtered to remove speckle noise and to correct for slant-range distortions. Image 'shine through', to account for areas of overlap, and auto-contrast adjustment were applied. Tonal artifacts caused by inaccurate across-track normalization present on the sidescan-sonar imagery are minor. Contrast enhancement based on the dynamic range of the data was applied to the mosaic and it was then projected into UTM Zone 19 to produce the final enhanced image.

    Person who carried out this activity:

    National Oceanic and Atmospheric Administration
    c/o Rick Brennan
    Field Operations Officer
    1315 East West Highway
    Silver Spring, MD 20910
    USA

    301-713-2653 x152 (voice)
    richard.t.brennan@noaa.gov

    Data sources produced in this process:
    • h11077_272_sss_100_0.5m_utm19nad83.tif

    Date: 2008 (process 2 of 7)
    The image was imported into Adobe Photoshop CS2 in order to apply a linear stretch (i.e., increase the dynamic range of the data) and to invert the grayscale to make strong reflections light tones and weak reflections returns darker tones.

    Person who carried out this activity:

    U.S. Geological Survey
    c/o Kate McMullen
    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:
    • h11077_272_sss_100_0.5m_utm19nad83.tif

    Data sources produced in this process:

    • h11077_sss100_utm19_en.tif

    Date: 2008 (process 3 of 7)
    The UTM sidescan-sonar image was projected from UTM Zone 19 NAD83 to geographic WGS 84 using transformation 1 in ArcGIS 9.2 with the ArcToolbox Project Raster Tool.

    Person who carried out this activity:

    Kate 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:
    • h11077_sss100_utm19_en.tif

    Data sources produced in this process:

    • h11077_sss100_geo1.tif

    Date: 2008 (process 4 of 7)
    Within ArcMap 9.2, the Data-Export option (Use Renderer box checked; cell size set to default; TIFF format specified) was used to convert the 16-bit TIFF to an 8-bit TIFF image.

    Person who carried out this activity:

    Kate 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:
    • h11077_sss100_geo1.tif

    Data sources produced in this process:

    • h11077_sss100_geo2.tif

    Date: 2008 (process 5 of 7)
    GeoTiffExamine was used to create a world file (.tfw).

    Person who carried out this activity:

    Kate 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:
    • h11077_sss100_geo2.tif

    Data sources produced in this process:

    • h11077_sss100_geo2.tfw

    Date: 2008 (process 6 of 7)
    PhotoShop CS was used to convert the black border to white with the Paint Bucket tool and to correct tonal artifacts caused by improper cross-track normalization.

    Person who carried out this activity:

    Kate 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:
    • h11077_sss100_geo2.tif

    Data sources produced in this process:

    • h11077_sss100_geo.tif

    Date: 2008 (process 7 of 7)
    The world file was renamed to match the name of the GeoTIFF.

    Person who carried out this activity:

    Kate 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:
    • h11077_sss100_geo2.tfw

    Data sources produced in this process:

    • h11077_sss100_geo.tfw

  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:
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?

    This dataset has been approved for release and publication by the USGS. Although it has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the U.S. Government, the Department of the Interior, nor the USGS, 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.

    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.

Who wrote the metadata?

Dates:
Last modified: 19-May-2008
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 2.8.6 on Mon May 19 08:48:01 2008