RB_Backscatter_1m: GeoTIFF image of interferometric backscatter data collected by the USGS within Red Brook Harbor, MA, 2009
Metadata also available as
Metadata:
- Identification_Information:
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- Citation:
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- Citation_Information:
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- Originator: U.S. Geological Survey
- Publication_Date: 2012
- Title:
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RB_Backscatter_1m: GeoTIFF image of interferometric backscatter data collected by the USGS within Red Brook Harbor, MA, 2009
- Edition: 1.0
- Geospatial_Data_Presentation_Form: remote-sensing image
- Series_Information:
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- Series_Name: Open-File Report
- Issue_Identification: 2010-1091
- Publication_Information:
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- Publication_Place:
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Woods Hole Coastal and Marine Science Center, Woods Hole, Massachusetts
- Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
- Online_Linkage:
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<https://pubs.usgs.gov/of/2010/1091/GIS/raster/backscatter/RB_Backscatter_1m.zip>
- Online_Linkage: <https://pubs.usgs.gov/of/2010/1091/html/appendix1.html>
- Larger_Work_Citation:
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- Citation_Information:
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- Originator: Aaron M. Turecek
- Originator: William W. Danforth
- Originator: Wayne E. Baldwin
- Originator: Walter A. Barnhardt
- Publication_Date: 2012
- Title:
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High-Resolution Geophysical Data Collected Within Red Brook Harbor, Buzzards Bay, Massachusetts, in 2009
- Edition: 1.0
- Series_Information:
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- Series_Name: Open-File Report
- Issue_Identification: 2010-1091
- Publication_Information:
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- Publication_Place:
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Woods Hole Coastal and Marine Science Center, Woods Hole, Massachusetts
- Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
- Online_Linkage: <https://pubs.usgs.gov/of/2010/1091/>
- Description:
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- Abstract:
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These data were collected under a cooperative agreement with the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS), Woods Hole Coastal and Marine Science Center (WHCMSC). Initiated in 2003, the primary objective of this program is to develop regional geologic framework information for the management of coastal and marine resources. Accurate data and maps of sea-floor geology are important first steps toward protecting fish habitat, delineating marine resources, and assessing environmental changes due to natural or human impacts. The project is focused on the inshore waters (5-30 m deep) of Massachusetts between the New Hampshire border and Cape Cod Bay. Data collected for the mapping cooperative have been released in a series of USGS Open-File Reports (<http://woodshole.er.usgs.gov/project-pages/coastal_mass/html/current_map.html>).
This is the spatial dataset for the Red Brook Harbor survey area within Buzzards Bay, Massachusetts. These data are the results of a high-resolution geophysical (bathymetry, backscatter intensity, and seismic reflection) and ground validation (sediment samples and bottom photographs) survey, conducted in 2009.
In addition to inclusion within the USGS-CZM geologic mapping effort, these Red Brook Harbor data will be used to assess the shallow-water mapping capability of the geophysical systems deployed for this project, with an emphasis on identifying resolution benchmarks for the interferometric sonar system. (<http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2009-018-FA>)
- Purpose:
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This GeoTIFF image represents approximately 7 square kilometers of interferometric sonar backscatter data that were collected in Red Brook Harbor, Massachusetts, by the U.S. Geological Survey in 2009 as part of USGS survey 09018. Data were collected with a Systems Engineering and Assessment Ltd. (SEA) SWATHplus interferometric sonar system. These data are used to define the sea-floor morphology as part of the Massachusetts Sea-floor Mapping Project. The cell size for this image is 1-meter by 1-meter.
- Time_Period_of_Content:
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- Time_Period_Information:
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- Range_of_Dates/Times:
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- Beginning_Date: 20090928
- Ending_Date: 20091023
- Currentness_Reference:
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ground condition, data were not collected every day during range
- Status:
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- Progress: Complete
- Maintenance_and_Update_Frequency: None planned
- Spatial_Domain:
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- Bounding_Coordinates:
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- West_Bounding_Coordinate: -70.686356
- East_Bounding_Coordinate: -70.609405
- North_Bounding_Coordinate: 41.696683
- South_Bounding_Coordinate: 41.652955
- Keywords:
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- Theme:
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- Theme_Keyword_Thesaurus: General
- Theme_Keyword: U.S. Geological Survey
- Theme_Keyword: USGS
- Theme_Keyword: Coastal and Marine Geology Program
- Theme_Keyword: CMGP
- Theme_Keyword: Woods Hole Coastal and Marine Science Center
- Theme_Keyword: WHCMSC
- Theme_Keyword: Seafloor
- Theme_Keyword: Marine Geology
- Theme_Keyword: WHCMSC field activity serial number 09018
- Theme_Keyword: WHCMSC Field Activity 2009-018-FA
- Theme_Keyword: bathymetry
- Theme_Keyword: swath bathymetry
- Theme_Keyword: interferometry
- Theme_Keyword: SEA SWATHplus
- Theme_Keyword: SEA Submetrix
- Theme_Keyword: R/V Rafael
- Theme_Keyword: backscatter
- Theme_Keyword: GeoTIFF image
- Theme:
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- Theme_Keyword_Thesaurus: ISO 19115 Topic Category
- Theme_Keyword: oceans
- Theme_Keyword: oceans and coastal
- Theme_Keyword: oceans and estuaries
- Theme_Keyword: imageryBaseMapsEarthCover
- Theme_Keyword: geoscientificInformation
- Place:
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- Place_Keyword_Thesaurus: General
- Place_Keyword: North America
- Place_Keyword: United States
- Place_Keyword: Atlantic Ocean
- Place_Keyword: Massachusetts
- Place_Keyword: Cape Cod
- Place_Keyword: Buzzards Bay
- Place_Keyword: Red Brook Harbor
- Stratum:
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- Stratum_Keyword_Thesaurus: General
- Stratum_Keyword: Seafloor
- Stratum_Keyword: Surface
- Temporal:
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- Temporal_Keyword_Thesaurus: General
- Temporal_Keyword: 2009
- Access_Constraints: None
- Use_Constraints:
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Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the source of this information.
- Point_of_Contact:
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- Contact_Information:
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- Contact_Person_Primary:
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- Contact_Person: Aaron Turecek
- Contact_Organization: U.S. Geological Survey
- Contact_Position: Geographer
- Contact_Address:
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- Address_Type: mailing and physical address
- Address: 384 Woods Hole Rd.
- City: Woods Hole
- State_or_Province: MA
- Postal_Code: 02543-1598
- Country: USA
- Contact_Voice_Telephone: 508-548-8700 x2230
- Contact_Facsimile_Telephone: 508-457-2310
- Contact_Electronic_Mail_Address: aturecek@usgs.gov
- Browse_Graphic:
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- Browse_Graphic_File_Name:
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<https://pubs.usgs.gov/of/2010/1091/GIS/browse_jpg/big/RB_Backscatter_1m.jpg>
- Browse_Graphic_File_Description:
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Backscatter intensity mosaic of interferometric sonar data collected by the USGS within Red Brook Harbor, MA, 2009
- Browse_Graphic_File_Type: JPEG
- Native_Data_Set_Environment:
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Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.1850
- Cross_Reference:
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- Citation_Information:
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- Originator: Walter A. Barnhardt
- Originator: Brian D. Andrews
- Originator: Bradford Butman
- Publication_Date: 2006
- Title:
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High-Resolution Geologic Mapping of the Inner Continental Shelf: Nahant to Gloucester, Massachusetts
- Series_Information:
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- Series_Name: Open-File Report
- Issue_Identification: 2005-1293
- Publication_Information:
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- Publication_Place: Woods Hole Science Center, Woods Hole, MA
- Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
- Online_Linkage: <https://pubs.usgs.gov/of/2005/1293/>
- Cross_Reference:
-
- Citation_Information:
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- Originator: Seth D. Ackerman
- Originator: Bradford Butman
- Originator: Walter A. Barnhardt
- Originator: William W. Danforth
- Originator: James M. Crocker
- Publication_Date: 2006
- Title:
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High-Resolution Geologic Mapping of the Inner Continental Shelf: Boston Harbor and Approaches, Massachusetts
- Series_Information:
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- Series_Name: Open-File Report
- Issue_Identification: 2006-1008
- Publication_Information:
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- Publication_Place: Woods Hole Science Center, Woods Hole, MA
- Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
- Online_Linkage: <https://pubs.usgs.gov/of/2006/1008/>
- Cross_Reference:
-
- Citation_Information:
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- Originator: Walter A. Barnhardt
- Originator: Brian D. Andrews
- Originator: Seth D. Ackerman
- Originator: Wayne E. Baldwin
- Originator: Christopher J. Hein
- Publication_Date: 2009
- Title:
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High-Resolution Geologic Mapping of the Inner Continental Shelf: Cape Ann to Salisbury Beach, Massachusetts
- Series_Information:
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- Series_Name: Open-File Report
- Issue_Identification: 2007-1373
- Publication_Information:
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- Publication_Place: Woods Hole Science Center, Woods Hole, MA
- Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
- Online_Linkage: <https://pubs.usgs.gov/of/2007/1373/>
- Cross_Reference:
-
- Citation_Information:
-
- Originator: Walter A. Barnhardt
- Originator: Seth D. Ackerman
- Originator: Brian D. Andrews
- Originator: Wayne E. Baldwin
- Publication_Date: 2010
- Title:
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Geophysical and Sampling Data from the Inner Continental Shelf: Duxbury to Hull, Massachusetts.
- Edition: 1.0
- Series_Information:
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- Series_Name: Open-File Report
- Issue_Identification: 2009-1072
- Publication_Information:
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- Publication_Place:
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Woods Hole Coastal and Marine Science Center, Woods Hole, Massachusetts
- Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
- Online_Linkage: <https://pubs.usgs.gov/of/2009/1072/>
- Data_Quality_Information:
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- Attribute_Accuracy:
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- Attribute_Accuracy_Report:
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Image pixel values contain acoustic reflectivity values normalized to an 8-bit data range (0-255). Low-backscatter is represented by dark tones (low values) and high-backscatter is represented by bright tones (high values).
- Logical_Consistency_Report:
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This image represents acoustic backscatter data from an interferometric sonar system. This image was interpolated to close along-track gaps at nadir. Data from main survey lines were incorporated in this image; no crossline data were included. Data gaps may remain between adjacent lines.
- Completeness_Report:
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All quality main survey line backscatter collected within the Red Brook Harbor survey area were incorporated in this image. SXPTOOLS software (no version) was used to apply an empirical gain normalization, and to interpolate across data gasps at nadir that resulted from the filtering techniques applied to the bathymetric soundings. Small gaps between adjacent survey lines may exist in the shallowest areas of the survey. Tielines were not used to generate this image. The western portion of line L40F1 was not included in the mosaic due to significantly different visual characteristics resulting from mis-applied acquisition settings.
- Positional_Accuracy:
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- Horizontal_Positional_Accuracy:
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- Horizontal_Positional_Accuracy_Report:
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The SWATHplus transducers were mounted on a rigid, vertical pole, at the bow of the R/V Rafael, approximately 0.5 meters below the water line. Navigation antennas (one Differential Global Positioning System (DGPS) antenna and two Real-Time Kinematic (RTK) GPS antennas) were mounted on a horizontal crossbar atop the vertical transducer mount pole. The horizontal positions for soundings were acquired with an Octopus F180 Attitude and Positioning System integrated with a Novatel DGPS. Horizontal sounding positions were recorded to raw sonar data files (SXR) via SWATHplus acquisition software (version 3.06.05.00). Position data from an Ashtech Surveyor RTK GPS, a Novatel DL-V3 RTK GPS, and a CSI LGBX Pro DGPS were recorded by HYPACK survey software to HYPACK raw files. A conservative estimate of the positional accuracy of the CSI LGBX Pro DGPS unit is ± 2 meters.
- Lineage:
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- Source_Information:
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- Type_of_Source_Media: disc
- Source_Time_Period_of_Content:
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- Time_Period_Information:
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- Range_of_Dates/Times:
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- Beginning_Date: 20090928
- Ending_Date: 20091023
- Source_Currentness_Reference: ground condition
- Source_Contribution:
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Bathymetric and backscatter data were collected using a Systems Engineering and Assessment, Ltd. SWATHplus (234 kHz) interferometric sonar system. The SWATHplus transducers were mounted on a rigid pole, approximately 0.5 m below the water line, from the bow of the of the R/V Rafael of Woods Hole, MA. A CodaOctopus F-180 Attitude and Positioning System, mounted directly above the SWATHplus transducers, measured vertical displacement (heave) and attitude (pitch and roll) of the vessel during data acquisition. An Applied Microsystems Ltd. Micro SV sound velocimeter, mounted adjacent to the SWATHplus transducers, continually measured changes in sound-velocity near the sea surface, and a hand-casted, Applied MicroSystems SV Plus sound velocimeter was used to collect sound-velocity profiles of the entire water column at least once each survey day. SWATHplus acquisition software was used to control the transducers and digitally log sonar data across an 80 m swath in SWATHplus raw (SXR) format. To obtain 100 percent coverage of the seafloor, survey lines were spaced approximately 30 m apart. The R/V Rafael maintained an average speed of 5 knots during survey operations. An empirical gain normalization was applied to backscatter data to optimize the dynamic range of recorded intensities, and data was interpolated across gaps at nadir that resulted from the filtering methods applied to the bathymetric soundings.
- Process_Step:
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- Process_Description:
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Each raw SWATHplus bathymetric sonar file (SXR) was converted to a SWATHplus processed file (SXP) using SEA SWATHplus Swath Processor (ver. 3.06.05.0). Conversion to SXP format retained all recorded data (Output Processed File/Processed Data Output Settings/Data Selection/Store All Data).
- Process_Date: 2009
- Process_Contact:
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- Contact_Information:
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- Contact_Person_Primary:
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- Contact_Person: Aaron Turecek
- Contact_Organization: U.S. Geological Survey
- Contact_Position: Geographer
- Contact_Address:
-
- Address_Type: mailing and physical address
- Address: 384 Woods Hole Rd.
- City: Woods Hole
- State_or_Province: MA
- Postal_Code: MA
- Country: USA
- Contact_Voice_Telephone: 508-548-8700 x2230
- Contact_Facsimile_Telephone: 508-457-2310
- Contact_Electronic_Mail_Address: aturecek@usgs.gov
- Process_Step:
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- Process_Description:
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SXPTools (no version) software was used to enhance the visual display of the backscatter data. An empirical gain normalization was applied to each SXP file to optimize the dynamic range of recorded backscatter intensity (SXPTools/SXPEGN). SXPMAGIC was used to interpolate backscatter intensity values across gaps at nadir that resulted from the filtering methods used to process the bathymetric soundings (SXPTools/SXPMAGIC).
- Process_Date: 2009
- Process_Contact:
-
- Contact_Information:
-
- Contact_Person_Primary:
-
- Contact_Person: Aaron Turecek
- Contact_Organization: U.S. Geological Survey
- Contact_Position: Geographer
- Contact_Address:
-
- Address_Type: mailing and physical address
- Address: 384 Woods Hole Rd.
- City: Woods Hole
- State_or_Province: MA
- Postal_Code: 02543-1598
- Country: USA
- Contact_Voice_Telephone: 508-548-8700 x2230
- Contact_Facsimile_Telephone: 508-457-2310
- Contact_Electronic_Mail_Address: aturecek@usgs.gov
- Process_Step:
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- Process_Description:
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Processed SXP files were imported into Chesapeake Technology SonarWiz software (version 4.0031) and mosaicked into a single backscatter file. The backscatter mosaic was exported to a 1-meter GeoTIFF image. The western portion of line L40F1 was not included in the mosaic due to significantly different visual characteristics resulting from mis-applied acquisition settings.
- Process_Date: 2009
- Process_Contact:
-
- Contact_Information:
-
- Contact_Person_Primary:
-
- Contact_Person: Aaron Turecek
- Contact_Organization: U.S. Geological Survey
- Contact_Position: Geographer
- Contact_Address:
-
- Address_Type: mailing and physical address
- Address: 384 Woods Hole Rd.
- City: Woods Hole
- State_or_Province: MA
- Postal_Code: 02543-1598
- Country: USA
- Contact_Voice_Telephone: 508-548-8700 x2230
- Contact_Facsimile_Telephone: 508-457-2310
- Contact_Electronic_Mail_Address: aturecek@usgs.gov
- Spatial_Data_Organization_Information:
-
- Direct_Spatial_Reference_Method: Raster
- Raster_Object_Information:
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- Raster_Object_Type: Pixel
- Row_Count: 4732
- Column_Count: 6312
- Vertical_Count: 1
- Spatial_Reference_Information:
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- Horizontal_Coordinate_System_Definition:
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- Planar:
-
- Grid_Coordinate_System:
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- Grid_Coordinate_System_Name: Universal Transverse Mercator
- Universal_Transverse_Mercator:
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- UTM_Zone_Number: 19
- Transverse_Mercator:
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- 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_Coordinate_Information:
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- Planar_Coordinate_Encoding_Method: row and column
- Coordinate_Representation:
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- Abscissa_Resolution: 1.000846
- Ordinate_Resolution: 1.000846
- Planar_Distance_Units: meters
- Geodetic_Model:
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- Horizontal_Datum_Name: D_WGS_1984
- Ellipsoid_Name: WGS_1984
- Semi-major_Axis: 6378137.000000
- Denominator_of_Flattening_Ratio: 298.257224
- Entity_and_Attribute_Information:
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- Overview_Description:
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- Entity_and_Attribute_Overview:
-
There are no attributes associated with this TIF image. Image pixel values contain acoustic reflectivity values normalized to an 8-bit data range (0-255) with the data range 0-254. Low-backscatter is represented by dark tones (low values) and high-backscatter is represented by bright tones (high values). The background color is set to 255 and can be turned off without removing data values.
- Entity_and_Attribute_Detail_Citation: U.S. Geological Survey
- Distribution_Information:
-
- Distributor:
-
- Contact_Information:
-
- Contact_Person_Primary:
-
- Contact_Person: Aaron Turecek
- Contact_Organization: U.S. Geological Survey
- Contact_Position: Geographer
- Contact_Address:
-
- Address_Type: mailing and physical address
- Address: 384 Woods Hole Rd.
- City: Woods Hole
- State_or_Province: MA
- Postal_Code: 02543-1598
- Country: USA
- Contact_Voice_Telephone: 508-548-8700 x2230
- Contact_Facsimile_Telephone: 508-457-2310
- Contact_Electronic_Mail_Address: aturecek@usgs.gov
- Resource_Description: Downloadable Data
- Distribution_Liability:
-
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. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS 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.
- Standard_Order_Process:
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- Digital_Form:
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- Digital_Transfer_Information:
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- Format_Name: WinZip
- Format_Version_Number: 9.0
- Format_Information_Content:
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This WinZip file contains a GeoTIFF image of interferometric sonar backscatter data from the Red Brook Harbor survey area and associated metadata.
- File_Decompression_Technique: Use Winzip
- Transfer_Size: 5.8 Mb
- Digital_Transfer_Option:
-
- Online_Option:
-
- Computer_Contact_Information:
-
- Network_Address:
-
- Network_Resource_Name:
-
<https://pubs.usgs.gov/of/2010/1091/GIS/raster/backscatter/RB_Backscatter_1m.zip>
- Access_Instructions: Data can be downloaded via the World Wide Web (WWW)
- Offline_Option:
-
- Offline_Media: DVD-ROM
- Recording_Capacity:
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- Recording_Density: 4.75
- Recording_Density_Units: Gbytes
- Recording_Format: UDF
- Fees: none
- Technical_Prerequisites:
-
This zip file contains 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 TIF image. A free spatial data viewer, ArcExplorer, capable of displaying the data is available from ESRI at www.esri.com.
- Metadata_Reference_Information:
-
- Metadata_Date: 20101124
- Metadata_Contact:
-
- Contact_Information:
-
- Contact_Person_Primary:
-
- Contact_Person: Aaron Turecek
- Contact_Organization: U.S. Geological Survey
- Contact_Position: Geographer
- Contact_Address:
-
- Address_Type: mailing and physical address
- Address: 384 Woods Hole Rd.
- City: Woods Hole
- State_or_Province: MA
- Postal_Code: 02543-1598
- Country: USA
- Contact_Voice_Telephone: 508-548-8700 x2230
- Contact_Facsimile_Telephone: 508-457-2310
- Contact_Electronic_Mail_Address: aturecek@usgs.gov
- Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
- Metadata_Standard_Version: FGDC-STD-001-1998
- Metadata_Time_Convention: local time
- Metadata_Extensions:
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- Profile_Name: ESRI Metadata Profile
Generated by mp version 2.9.6 on Tue Mar 20 15:33:15 2012