rb_bathy_1m: ESRI Binary floating point GRID containing bathymetry from interferometric sonar data collected by the USGS within Red Brook Harbor, MA, 2009 (1-meter cell size)

Metadata also available as

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 2012
Title:
rb_bathy_1m: ESRI Binary floating point GRID containing bathymetry from interferometric sonar data collected by the USGS within Red Brook Harbor, MA, 2009 (1-meter cell size)
Edition: 1.0
Geospatial_Data_Presentation_Form: remote-sensing image
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2010-1091
Publication_Information:
Publication_Place:
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/GIS/raster/bathy/rb_bathy_1m.zip>
Online_Linkage: <https://pubs.usgs.gov/of/2010/1091/html/appendix1.html>
Larger_Work_Citation:
Citation_Information:
Originator: Aaron M. Turecek
Originator: William W. Danforth
Originator: Wayne E. Baldwin
Originator: Walter A. Barnhardt
Publication_Date: 2012
Title:
High-Resolution Geophysical Data Collected Within Red Brook Harbor, Buzzards Bay, Massachusetts, in 2009
Edition: 1.0
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2010-1091
Publication_Information:
Publication_Place:
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:
Abstract:
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:
This grid represents approximately 7 square kilometers of bathymetric 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 grid is 1-meter by 1-meter.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20090928
Ending_Date: 20091023
Currentness_Reference:
ground condition, data were not collected every day during range
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -70.679617
East_Bounding_Coordinate: -70.615603
North_Bounding_Coordinate: 41.692376
South_Bounding_Coordinate: 41.661587
Keywords:
Theme:
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: ESRI Binary GRID
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans
Theme_Keyword: oceans and coastal
Theme_Keyword: oceans and estuaries
Theme_Keyword: elevation
Theme_Keyword: imageryBaseMapsEarthCover
Theme_Keyword: geoscientificInformation
Place:
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:
Stratum_Keyword_Thesaurus: General
Stratum_Keyword: Seafloor
Stratum_Keyword: Surface
Temporal:
Temporal_Keyword_Thesaurus: General
Temporal_Keyword: 2009
Access_Constraints: None
Use_Constraints:
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. Not to be used for navigation.
Point_of_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
Browse_Graphic:
Browse_Graphic_File_Name:
<https://pubs.usgs.gov/of/2010/1091/GIS/browse_jpg/big/rb_bathy_1m.jpg>
Browse_Graphic_File_Description:
Bathymetry GRID of interferometric sonar data collected by the USGS within Red Brook Harbor, MA, 2009
Browse_Graphic_File_Type: JPEG
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.1850
Cross_Reference:
Citation_Information:
Originator: Walter A. Barnhardt
Originator: Brian D. Andrews
Originator: Bradford Butman
Publication_Date: 2006
Title:
High-Resolution Geologic Mapping of the Inner Continental Shelf: Nahant to Gloucester, Massachusetts
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2005-1293
Publication_Information:
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:
Originator: Seth D. Ackerman
Originator: Bradford Butman
Originator: Walter A. Barnhardt
Originator: William W. Danforth
Originator: James M. Crocker
Publication_Date: 2006
Title:
High-Resolution Geologic Mapping of the Inner Continental Shelf: Boston Harbor and Approaches, Massachusetts
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2006-1008
Publication_Information:
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:
Originator: Walter A. Barnhardt
Originator: Brian D. Andrews
Originator: Seth D. Ackerman
Originator: Wayne E. Baldwin
Originator: Christopher J. Hein
Publication_Date: 2009
Title:
High-Resolution Geologic Mapping of the Inner Continental Shelf: Cape Ann to Salisbury Beach, Massachusetts
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2007-1373
Publication_Information:
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:
Geophysical and Sampling Data from the Inner Continental Shelf: Duxbury to Hull, Massachusetts.
Edition: 1.0
Series_Information:
Series_Name: <https://pubs.usgs.gov/of/2009/1072/>
Issue_Identification: 2009-1072
Publication_Information:
Publication_Place:
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:
Attribute_Accuracy:
Logical_Consistency_Report:
This grid was interpolated to close data gaps that occurred along-track at nadir, and between adjacent lines.
Completeness_Report:
All quality main survey line bathymetric data that were collected within the Red Brook Harbor survey area were incorporated in this grid. Soundings were processed and edited using Computer Aided Resource Information System (CARIS) Hydrographic Information Processing System (HIPS; ver. 6.1). Although the soundings were manually edited, small data spikes may exist at outer edges of some swaths. In addition, small gaps between adjacent survey lines may exist in the shallowest areas of the survey. Tielines were used to verify tide corrections during post-processing, but were not used in generating this grid.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
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.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
The manufacturer specifications for the SWATHplus interferometric sonar system indicate the vertical accuracy of data collected is approximately 1% of the water depth. In the Red Brook Harbor survey area, 1% of the water depth translates to a vertical accuracy range of 0 to 0.11 meters. RTK GPS was used to establish water-level heights relative to Mean Lower Low Water (MLLW) at decimeter-scale accuracies. Tide-correction was performed in post-processing (see process steps). Refraction artifacts were minimized by acquiring sound velocity profiles throughout the survey area to correct vertical offsets to soundings resulting from variations in the speed of sound within the water column. Daily changes in vessel draft due to fuel and water usage were not considered. Based on acquisition sensor accuracy, tide correction, and correction for speed of sound variability in the water column, it is estimated that the overall vertical accuracy of these bathymetric data is approximately 0.5 meters.
Lineage:
Process_Step:
Process_Description:
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). During the conversion process, sound velocity profiles were used to minimize potential refraction artifacts from fluctuations in the speed of sound within the water column. Various bathymetric filters were applied to eliminate sounding outliers.
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:
Process_Description:
Prepare tide correction data. Depths were corrected to Mean Lower Low Water (MLLW) using 1-second RTK GPS heights from the Ashtech RTK GPS receiver mounted over the SWATHplus sonar head. These heights were extracted from each HYPACK navigation file using the AWK (version 3.1.6) script "doRTK1_by_line_FIX." ASCII text files for each survey day were compiled and reformatted to CARIS Tides format (yyyy/mm/dd hh:mm:ss t.ttt).
Process_Date: 2009
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Bill Danforth
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
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 x2274
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: bdanforth@usgs.gov
Process_Step:
Process_Description:
A new CARIS HIPS project (ver. 6.1) was created with projection information set to Universal Transverse Mercator (UTM) Zone 19, WGS84. Each SWATHplus processed file (SXP) was imported to the new CARIS project using the Import/Conversion Wizard. RTK tide files (prepared in previous processing step) were applied to all survey lines. Corrected tides were smoothed with a 1-minute moving-average in CARIS attitude editor. Navigation was edited as needed using the navigation editor tool in CARIS. A Bathymetric and Statistical Error (BASE) Surface was created at 1 meter cell size and was reviewed for any inconsistencies or data anomalies. Filters were applied to each line including beam to beam slopes and across track angle. The CARIS refraction editor was used to adjust the speed of sound in cases where the velocimeter did not provide adequate correction to flatten out the depth profiles produced by localized variations in speed of sound through the water column. Areas of overlap between the outer beams and the nadir gap of adjacent lines were manually edited extensively throughout the survey area. A final BASE surface was created at 1 meter and reviewed. A final 1 meter cell BASE surface was interpolated with a 5x5 matrix. The final 1 meter cell BASE surface was exported to ASCII format.
Source_Used_Citation_Abbreviation: `
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:
Process_Description:
In ESRI ArcMap (version 9.3) the final 1-meter ASCII file exported from CARIS in the previous processing step was converted to a point feature class (ArcCatalog/Create Feature Class/From XY Table), which was then converted to an ESRI GRID (Spatial Analyst/Convert/Features to Raster).
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:
Raster_Object_Type: Grid Cell
Row_Count: 3319
Column_Count: 5267
Vertical_Count: 1
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 19
Transverse_Mercator:
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:
Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:
Abscissa_Resolution: 1.000000
Ordinate_Resolution: 1.000000
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: D_WGS_1984
Ellipsoid_Name: WGS_1984
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257224
Vertical_Coordinate_System_Definition:
Depth_System_Definition:
Depth_Datum_Name: Mean lower low water
Depth_Resolution: 0.5 m
Depth_Distance_Units: meters
Depth_Encoding_Method: Explicit depth coordinate included with horizontal coordinates
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Value
Entity_Type_Definition: Depth in meters below mean lower low water
Entity_Type_Definition_Source: ESRI
Overview_Description:
Entity_and_Attribute_Overview:
Swath bathymetry in ESRI GRID format. Data values represent depth in meters referenced to mean lower low water (MLLW).
Entity_and_Attribute_Detail_Citation: ESRI
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:
Digital_Form:
Digital_Transfer_Information:
Format_Name: WinZip
Format_Version_Number: 9
Format_Information_Content:
WinZip file containing the ESRI GRID of swath bathymetric data from the Red Brook Harbor survey area and associated metadata.
File_Decompression_Technique: Use Winzip
Transfer_Size: 17.0 Mb
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<https://pubs.usgs.gov/of/2010/1091/GIS/raster/bathy/rb_bathy_1m.zip>
Access_Instructions: Data can be downloaded via the World Wide Web (WWW)
Offline_Option:
Offline_Media: DVD-ROM
Recording_Capacity:
Recording_Density: 4.75
Recording_Density_Units: Gbytes
Recording_Format: UDF
Fees: none
Technical_Prerequisites:
These data are available as an Environmental Systems Research Institute (ESRI) 32-bit floating point GRID. The grid consists of two folders, one with the "grid name", and one "info" folder. The two folders for each grid are compressed into one file using WinZip (ver. 9.0) software. To utilize these data, the user must have software capable of uncompressing the WinZip file and importing and viewing an ESRI grid. The two folders for each grid must be uncompressed to the same folder. Extracting grids from different publications into the same folder is not recommended and will likely render some of your grids unusable.
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:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
Generated by mp version 2.9.6 on Tue Mar 20 15:37:16 2012