BISOUND_4MGEO: 4-m Grid of the Combined Multibeam Bathymetry Generated from National Oceanic and Atmospheric Administration (NOAA) Surveys H12009, H12010, H12011, H12015, H12033, H12137, and H12139 Offshore in Block Island Sound (Geographic, WGS84)
Originator: National Oceanic and Atmospheric Administration
Originator: U.S. Geological Survey
Publication_Date: 2012
Title:
BISOUND_4MGEO: 4-m Grid of the Combined Multibeam Bathymetry Generated from National Oceanic and Atmospheric Administration (NOAA) Surveys H12009, H12010, H12011, H12015, H12033, H12137, and H12139 Offshore in Block Island Sound (Geographic, WGS84)
Edition: 1.0
Geospatial_Data_Presentation_Form: raster digital data
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2012-1005
Publication_Information:
Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
The USGS, in cooperation with NOAA, is producing detailed maps of the seafloor off southern New England. The current phase of this cooperative research program is directed toward analyzing how bathymetric relief relates to the distribution of sedimentary environments and benthic communities. As part of this program, digital terrain models (DTMs) from bathymetry collected as part of NOAA's hydrographic charting activities are converted into ESRI raster grids and imagery, verified with bottom sampling and photography, and used to produce interpretations of seabed geology and hydrodynamic processes. Although each of the 7 continuous-coverage, completed surveys individually provides important benthic environmental information, many applications require a geographically broader perspective. For example, the usefulness of individual surveys is limited for the planning and construction of cross-Sound infrastructure, such as cables and pipelines, or for the testing of regional circulation models. To address this need, we integrated the 7 contiguous multibeam bathymetric DTMs into one dataset that covers much of Block Island Sound. The new dataset is adjusted to mean lower low water, is provided in UTM Zone 19 NAD83 and geographic WGS84 projections, and is gridded to 4-m resolution. This resolution is adequate for seafloor-feature and process interpretation, but small enough to be queried and manipulated with standard GIS programs and to allow for future growth. Natural features visible in the grid include boulder lag deposits of submerged moraines, sand-wave fields, and scour depressions that reflect the strength of the oscillating tidal currents. Bedform asymmetry allows interpretations of net sediment transport. Together the merged data reveal a larger, more continuous perspective of bathymetric topography than previously available, providing a fundamental framework for research and resource management activities off this portion of the Rhode Island coast.
Purpose:
To release a 4-m grid of the combined multibeam bathymetry generated from NOAA surveys H12009, H12010, H12011, H12015, H12033, H12137, and H12139 offshore in Block Island Sound in geographic, WGS84 coordinates.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20090508
Ending_Date: 20091014
Currentness_Reference:
ground condition (See the source citation in the lineage section for individual component's specific dates.)
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -71.876426
East_Bounding_Coordinate: -71.358644
North_Bounding_Coordinate: 41.341715
South_Bounding_Coordinate: 41.108304
Keywords:
Theme:
Theme_Keyword_Thesaurus: General
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Woods Hole Coastal and Marine Science Center
Theme_Keyword: multibeam bathymetry
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: CMGP
Theme_Keyword: WHCMSC
Theme_Keyword: National Oceanic and Atmospheric Administration
Theme_Keyword: NOAA
Theme_Keyword: Grid
Theme_Keyword: Open-File Report 2012-1005
Theme_Keyword: OFR 2012-1005
Theme_Keyword: RESON 8125
Theme_Keyword: MBES
Theme_Keyword: bathymetry
Theme_Keyword: NOAA survey H12009
Theme_Keyword: NOAA survey H12010
Theme_Keyword: NOAA survey H12011
Theme_Keyword: NOAA survey H12015
Theme_Keyword: NOAA survey H12033
Theme_Keyword: NOAA survey H12137
Theme_Keyword: NOAA survey H12139
Theme_Keyword: H12009
Theme_Keyword: H12010
Theme_Keyword: H12011
Theme_Keyword: H12015
Theme_Keyword: H12033
Theme_Keyword: H12137
Theme_Keyword: RESON 7125
Theme_Keyword: ArcRastar grid
Theme_Keyword: H12139
Theme_Keyword: Multibeam echosounder
Theme_Keyword: DTM
Theme_Keyword: Digital terrain model
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans and estuaries
Theme_Keyword: oceans and coastal
Theme_Keyword: elevation
Theme_Keyword: oceans
Place:
Place_Keyword_Thesaurus: General
Place_Keyword: Rhode Island
Place_Keyword: Block Island
Place_Keyword: U.S. East Coast
Place_Keyword: United States
Place_Keyword: North America
Place_Keyword: Atlantic Ocean
Place_Keyword: Block Island Sound
Place_Keyword: Point Judith
Place_Keyword: Sandy Point
Place_Keyword: Block Island North Reef
Place_Keyword: Watch Hill Point
Place_Keyword: Dickens Point
Place_Keyword: Grace Point
Place_Keyword: Montauk Point
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.
Thumbnail image showing the combined 4-m gridded multibeam bathymetry collected during NOAA surveys H12009, H12010, H12011, H12015, H12033, H12137, and H12139 offshore in Block Island Sound in geographic, WGS84 coordinates.
Browse_Graphic_File_Type: GIF
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.2.6.1500
Cross_Reference:
Citation_Information:
Originator: P. Tod Schattgen
Publication_Date: 2009
Title: H12009
Edition: 1.0
Geospatial_Data_Presentation_Form: document
Series_Information:
Series_Name: Descriptive Report
Issue_Identification: H12009
Publication_Information:
Publication_Place: Atlantic Hydrographic Branch, Norfolk, VA
Publisher:
National Ocean Survey, National Oceanic and Atmospheric Administration
No additional checks for consistency were performed on this data.
Completeness_Report:
All collected data were processed and used to produce this dataset.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Horizontal position of the launches acquiring multibeam bathymetry were determined using GPS corrected by U.S. Coast Guard differential GPS beacon stations at Moriches, NY and Acushnet, MA. The final CARIS combined base surfaces for the MBES data were produced at a 2-m cell size.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
Attitude of the launches (e.g. pitch, roll, and heave) acquiring multibeam bathymetry were monitored by an Applanix TSS POS/MV 320 Version 3 GPS aided navigation system. Verified water levels are based on National Water Level Observation Network (NWLON) stations 8461490, New London, CT; 8452660, Newport, RI; and 8510560, Montauk, NY. The vertical resolution of the multibeam data is approximately 0.5% of the water depth.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: P. Tod Schattgen
Originator:
Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic and Atmospheric Administration, Norfolk, VA
Publication_Date: Unpublished Material
Title: H12009 bathymetry
Geospatial_Data_Presentation_Form: raster digital data
Type_of_Source_Media: computer harddrive
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20090508
Ending_Date: 20090519
Source_Currentness_Reference: ground condition
Source_Contribution: Original processed multibeam bathymetric data.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Shepard M. Smith
Originator:
Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic and Atmospheric Administration, Norfolk, VA
Publication_Date: Unpublished Material
Title: H12010 bathymetry
Geospatial_Data_Presentation_Form: raster digital data
Type_of_Source_Media: computer harddrive
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20090723
Ending_Date: 20090819
Source_Currentness_Reference: ground condition
Source_Contribution: Original processed multibeam bathymetric data.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Shepard M. Smith
Originator:
Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic and Atmospheric Administration, Norfolk, VA
Publication_Date: Unpublished Material
Title: H12011 bathymetry
Geospatial_Data_Presentation_Form: raster digital data
Type_of_Source_Media: computer harddrive
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20090724
Ending_Date: 20090825
Source_Currentness_Reference: ground condition
Source_Contribution: Original processed multibeam bathymetric data.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Shepard M. Smith
Originator:
Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic and Atmospheric Administration, Norfolk, VA
Publication_Date: Unpublished Material
Title: H12015 bathymetry
Geospatial_Data_Presentation_Form: raster digital data
Type_of_Source_Media: computer harddrive
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20090927
Ending_Date: 20091014
Source_Currentness_Reference: ground condition
Source_Contribution: Original processed multibeam bathymetric data.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Shepard M. Smith
Originator:
Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic and Atmospheric Administration, Norfolk, VA
Publication_Date: Unpublished Material
Title: H12033 bathymetry
Geospatial_Data_Presentation_Form: raster digital data
Type_of_Source_Media: computer harddrive
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20090807
Ending_Date: 20090821
Source_Currentness_Reference: ground condition
Source_Contribution: Original processed multibeam bathymetric data.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Shepard M. Smith
Originator:
Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic and Atmospheric Administration, Norfolk, VA
Publication_Date: Unpublished Material
Title: H12137 bathymetry
Geospatial_Data_Presentation_Form: raster digital data
Type_of_Source_Media: computer harddrive
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20090809
Ending_Date: 20090821
Source_Currentness_Reference: ground condition
Source_Contribution: Original processed multibeam bathymetric data.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Shepard M. Smith
Originator:
Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic and Atmospheric Administration, Norfolk, VA
Publication_Date: Unpublished Material
Title: H12139 bathymetry
Geospatial_Data_Presentation_Form: raster digital data
Type_of_Source_Media: computer harddrive
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20090820
Ending_Date: 20090831
Source_Currentness_Reference: ground condition
Source_Contribution: Original processed multibeam bathymetric data.
Process_Step:
Process_Description:
The 63-m NOAA Ship Thomas Jefferson and two 8.5-m aluminum Jensen launches (3101 and 3102) deployed from the ship acquired multibeam echosounder (MBES) data for 7 hydrographic surveys in Block Island Sound over an approximately 633.6-square kilometer area between May and October 2009. Registry numbers for the completed surveys include: H12009, H12010, H12011, H12015, H12033, H12137, and H12139. The MBES data were collected with a hull-mounted RESON SeaBat 455-kHz 8125 shallow-water system aboard launch 3101 and RESON single frequency (400-kHz) 7125 systems aboard launch 3102 and the NOAA Ship Thomas Jefferson. Original vertical resolution of the MBES data was 0.5 m for water depths less than 20 m and 1 m for the deeper parts of the survey area. The bathymetric datasets were acquired and digitally logged with HYPACK Hysweep, and processed by NOAA using CARIS Hydrographic Image Processing System (HIPS) software for quality control, to incorporate sound velocity and tidal corrections, and to produce the combined bathymetry adjusted for statistical error (BASE) surfaces. Horizontal positioning was by differential global positioning systems (DGPS); HyPACK 2009 was used for acquisition line navigation. Sound-velocity corrections were derived with frequent conductivity-temperature-depth profiles. A Brooke Ocean Technology Moving Vessel Profiler (MVP) with an Applied Microsystems Smart Sound Velocity and Pressure (SV&P) sensor was used to collect sound speed profile data from the ship. Manually deployed Seabird Electronics SBE-19+ CTD units were used to collect sound speed profile data from the launches. Tidal zone corrections were calculated from data acquired by the National Water Level Observation Network stations at New London, Connecticut (8461490); Newport, Rhode Island (8452660); and Montauk, New York (8510560). The vertical datum is mean lower low water; X and Y units are meters, UTM Zone 19, NAD83. Detailed descriptions of the MBES acquisition and processing by NOAA can be found in the Descriptive Reports and in the Data Acquisition and Processing Report.
The field sheets from the surveys (average depths, not the shoal based field sheets) were read back into CARIS HIPS/SIPS software version 7.0. Using the Base Surface -> Combine command within HIPS, all of the source CARIS base surfaces were combined into a master BASE surface (bisound) having a 4 meter grid resolution.
The BAG surface was imported into Fledermaus v7.2 to make equivalent digital terrain model (DTM) files. The floating point format for each sounding depth point is preserved during data import. Additionally, the BAG surface was imported into Fledermaus as "gridded data", therefore re-gridding of data did not occur during the import process and thus preserved the original resolution of the CARIS base surface. The DTM was then directly exported to ArcGIS as a bathy raster file using the FMGIS module built into Fledermaus v7.2, retaining all of the projection information (NAD_1983_UTM_Zone_19N) and grid cell size (4 meter node spacing).
The UTM projected bathy raster was then reprojected using the data management tool Project Raster (ArcToolbox, Data Management Tools, Projections and Transformations) from UTM Zone 19N, NAD 83 to Geographic, WGS84. The options specified in the Project Raster tool were:
1. Input coordinate system: NAD_1983_UTM_Zone_19N
2. Output coordinate system: GCS_WGS_1984
3. Geographic transformation method: NAD_1983_WGS_1984_5
4. Resampling technique: BILINEAR
5. Output cell size: 0.000043 (decimal degrees, default as calculated by ArcMap for a 4 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).
Depth_Encoding_Method: Explicit depth coordinate included with horizontal coordinates
Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
A 4-m grid of the combined bathymetry data from NOAA surveys H12009, H12010, H12011, H12015, H12033, H12137, and H12139 offshore in Block Island Sound in geographic, WGS84 coordinates.
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Larry Poppe
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700 x2314
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: lpoppe@usgs.gov
Resource_Description: Downloadable Data
Distribution_Liability:
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.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ARCG
Format_Version_Number: 9.2
Format_Specification: GeoTIFF
Format_Information_Content:
One file (bisound_4mgeo.zip) containing the ArcGIS grid file components, browse graphic and metadata.
Access_Instructions: Data are downloadable via the World Wide Web (WWW).
Offline_Option:
Offline_Media: DVD-ROM
Recording_Capacity:
Recording_Density: 4.7
Recording_Density_Units: Gbytes
Recording_Format: UDF
Fees: None
Technical_Prerequisites:
The user must have a program capable of reading the ESRI grid data format. The user must have software capable of uncompressing archived zip files, such as WinZip or Pkware.
Available_Time_Period:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2012
Metadata_Reference_Information:
Metadata_Date: 20120503
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Larry Poppe
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: (508) 548-8700 x2314
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: lpoppe@usgs.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata