Composite Bathymetry Boundaries from Boston Harbor and Approaches

Metadata also available as

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Seth Ackerman
Publication_Date: 2006
Title:
Composite Bathymetry Boundaries from Boston Harbor and Approaches
Geospatial_Data_Presentation_Form: vector digital data
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:
<http://pubs.usgs.gov/of/2006/1008/gis/datazipped/compbathybnds.zip>
Larger_Work_Citation:
Citation_Information:
Originator: Ackerman, S.D.
Originator: Butman, B.
Originator: Barnhardt, W.B.
Originator: Danforth, W.W.
Originator: Crocker, J.M.
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
Other_Citation_Details: 1 DVD-ROM
Online_Linkage: <http://pubs.usgs.gov/of/2006/1008/>
Description:
Abstract:
This data is the boundary polygon for the high-resolution bathymetric measurements of the seafloor from Boston Harbor and the harbor approaches, Massachusetts. Approximately 170 km² of sidescan sonar and bathymetric data were collected by the National Oceanic and Atmospheric Administration (NOAA) Ship Whiting in 2000 and 2001 and reprocessed and gridded by the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS).

Note: These data were converted from their native projection to the Massachusetts State Plane coordinate system, Mainland Zone (Fipszone 2001), meters by the Massachusetts Department of Coastal Zone Management on Oct. 19, 2006.

Purpose:
The geophysical dataset were collected by the National Oceanic and Atmospheric Administration (NOAA) National Ocean Service (NOS) branch as part of their periodic hydrographic mapping for nautical charting. The raw datasets were provided by NOAA to the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS) in Woods Hole, MA as part of a cooperative agreement to provide high resolution bathymetry and backscatter intensity maps and digital GIS information for resource management, scientific research, industry and the public.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20000919
Ending_Date: 20011030
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -71.056811
East_Bounding_Coordinate: -70.814413
North_Bounding_Coordinate: 42.439035
South_Bounding_Coordinate: 42.253407
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 Science Center
Theme_Keyword: WHSC
Theme_Keyword: Massachusetts Office of Coastal Zone Management
Theme_Keyword: CZM
Theme_Keyword: Seafloor
Theme_Keyword: Marine Geology
Theme_Keyword: ESRI Shapefile
Theme_Keyword: field activity serial number RAFA04019
Theme_Keyword: Multibeam
Theme_Keyword: Bathymetry
Theme_Keyword: Reson SeaBat 8101
Theme_Keyword: Reson
Theme_Keyword: Topography
Theme_Keyword: Odom Echotrac DF3200 MKII echosounder
Theme_Keyword: echosounder
Theme_Keyword: Odem
Theme_Keyword: single-beam
Theme_Keyword: vertical-beam
Theme_Keyword: National Oceanic and Atmospheric Administration
Theme_Keyword: NOAA
Theme_Keyword: National Ocean Service
Theme_Keyword: NOS
Theme_Keyword: NOAA Ship Whiting
Theme_Keyword: Hydrographic Survey
Theme_Keyword: 32-bit floating point
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans and estuaries
Theme_Keyword: elevation
Theme_Keyword: boundaries
Place:
Place_Keyword_Thesaurus: General
Place_Keyword: Massachusetts Bay
Place_Keyword: Atlantic Ocean
Place_Keyword: Boston Harbor
Place_Keyword: Nahant
Place_Keyword: Boston
Place_Keyword: Hull
Place_Keyword: Hubline
Place_Keyword: Boston Harbor Islands
Stratum:
Stratum_Keyword_Thesaurus: General
Stratum_Keyword: Seafloor
Access_Constraints: None
Use_Constraints:
Data are not intended for navigational use.

These data should not be used at resolutions for which it is not intended.

Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS), as the source of this information.

Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Seth Ackerman
Contact_Organization: Massachusetts Office of Coastal Zone Management
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 x2315
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: seth.ackerman@state.ma.us
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722
Data_Quality_Information:
Logical_Consistency_Report:
No additional checks for topological consistency were performed on this data.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
All of the NOAA survey vessels were equipped with Trimble DSM212L Differential Global Positioning System (DGPS) receivers. Launch 1005, which collected all of the multibeam bathymetry, was also equipped with a TSS POS/MV Model 320 (Position and Orientation System for Marine Vessels). Standard bathymetric processing, including tide corrections, soundings accuracy, and quality control were done by the NOAA Office of Coast Survey.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
Tidal datum for this project is Mean Lower Low Water (MLLW). The tide station at Boston, MA (844-3970) was the control for the vertical datum.
Lineage:
Source_Information:
Type_of_Source_Media: External Hard Drive
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20000919
Ending_Date: 20011030
Source_Currentness_Reference: ground condition
Source_Contribution:
The original geophysical data for this project were collected during four hydrographic surveys conducted by NOAA NOS in 2000 and 2001 on the NOAA Ship Whiting and its launches 1005/1014. Multibeam bathymetric data were acquired with a Reson SeaBat 8101 and sidescan sonar backscatter data were acquired with Edgetech model 272-T (100 kHz) or the Klein T-5500 (455 kHz) sonar systems.
Process_Step:
Process_Description:
A hull-mounted Reson SeaBat 8101 acquired the shallow-water multibeam data for all four surveys. The Reson 8101 was operated at a frequency of 240 kHz and a maximum speed of 6 knots. The system is designed for operation in water depths of 5 to 125 m, and has a horizontal range of 75 to 500 m that depends on water depth. Each time the system fires or "pings", it collects 101 individual soundings in a swath oriented perpendicular to the vessel track. Acquisition was monitored in real time with the ISIS software (version 5.29) and recorded to XTF format. NOAA Office of Coast Survey converted the XTF data to CARIS HDCS (Hydrographic Data Cleaning System) format, then processed and tide-corrected the data with CARIS HIPS (Hydrographic Information Processing System) software. The CARIS HIPS database was transfered to the USGS/CZM in 2004 for use in this project.

The NOAA acquisition vessels were also equipped with Odom Echotrac DF3200 MKII echosounders that logged high-frequency (100 kHz) vertical-beam soundings concurrently throughout the sidescan sonar and multibeam bathymetry surveying operations. Vertical-beam soundings were recorded in Hypack raw format and later converted to CARIS HDCS format. The NOAA Office of Coast Survey cleaned and merged the data and performed tide corrections using CARIS HIPS.

Process_Step:
Process_Description:
Bathymetry soundings from the multibeam surveys were exported from CARIS HIPS at a 2-meter grid interval for each of the four survey areas and vertical-beam soundings from surveys H10990, H10992, and H10994 were exported from CARIS HIPS at a 5-meter grid interval. The vertical-beam data from survey H01991 were processed by NOAA prior to their use of CARIS and a separate xyz file was provided for these soundings. The eight soundings files were merged to create a master file of over 17 million soundings within the survey areas.
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Seth Ackerman
Contact_Organization: Massachusetts Office of Coastal Zone Management
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: c/o U.S. Geological Survey
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2315
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: seth.ackerman@state.ma.us
Process_Step:
Process_Description:
GMT (Generic Mapping Tools - <http://gmt.soest.hawaii.edu/>) was used to create an interpolated grid of the bathymetry for the entire region. The soundings data were formatted for input into GMT and then filtered through the GMT block median routine to reduce the data and speed up the interpolation process. An interpolated grid was created using the GMT surface routine with a grid cell size of 30 m and a tension parameter of 0.5. The GMT grid was converted to an ASCII grid using the Gdal utility gdal_translate (FWTools, version 1.0.0a7 and Gdal, version 1.3.1).
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Seth Ackerman
Contact_Organization: Massachusetts Office of Coastal Zone Management
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: c/o U.S. Geological Survey
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2315
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: seth.ackerman@state.ma.us
Process_Step:
Process_Description:
In ArcGIS 9.0 (ArcToolbox) the ASCII grid was converted to an ESRI bathymetry grid (cell size = 30 m).
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Seth Ackerman
Contact_Organization: Massachusetts Office of Coastal Zone Management
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: c/o U.S. Geological Survey
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2315
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: seth.ackerman@state.ma.us
Process_Step:
Process_Description:
In ArcMap (Spatial Analyst -> Raster Calculator) evaluated the expression "bh_30mbath > -32" the resulting was a temporary file 'calculation' with value = 1 where the multibeam data exists. In ArcMap (Spatial Analyst -> Convert -> Raster to Features) the temp grid 'Calculation' was converted to a polygon shapefile (Input raster: Calculation, Field: Value, Output geometry type: Polygon).
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Seth Ackerman
Contact_Organization: Massachusetts Office of Coastal Zone Management
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: c/o U.S. Geological Survey
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2315
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: seth.ackerman@state.ma.us
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Raster_Object_Information:
Raster_Object_Type: Grid Cell
Row_Count: 657
Column_Count: 648
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: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000032
Ordinate_Resolution: 0.000032
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
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: compositebathybnds
Attribute:
Attribute_Label: FID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: Shape_Area
Attribute_Definition: Area of feature in meters squared.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Positive real numbers that are automatically generated.
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Seth Ackerman
Contact_Organization: Massachusetts Office of Coastal Zone Management
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: c/o U.S. Geological Survey
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2315
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: seth.ackerman@state.ma.us
Resource_Description: Downloadable Data
Distribution_Liability:
Although this data set has been used by the U.S. Geological Survey (USGS), no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and/or related materials. 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: Shapefile
Format_Version_Number: ArcGIS 9.x
Format_Specification: ESRI Polygon Shapefile
File_Decompression_Technique: no compression applied
Transfer_Size: 0.903
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<http://pubs.usgs.gov/of/2006/1008/gis/datazipped/compbathybnds.zip>
Network_Resource_Name: <http://pubs.usgs.gov/of/2006/1008/html/appendix1.html>
Network_Resource_Name: <http://pubs.usgs.gov/of/2006/1008/gis/OFR_2006_1008/shapes/>
Offline_Option:
Offline_Media: DVD-ROM
Recording_Format: ISO 9660
Fees: None
Technical_Prerequisites:
These data are available in Environmental Systems Research Institute (ESRI) Shapefile format. The user must have software capable of importing and processing the data file.
Metadata_Reference_Information:
Metadata_Date: 20061019
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Seth Ackerman
Contact_Organization: Massachusetts Office of Coastal Zone Management
Contact_Position: Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: c/o U.S. Geological Survey
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Country: USA
Contact_Voice_Telephone: 508-548-8700 x2315
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: seth.ackerman@state.ma.us
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Access_Constraints: None
Metadata_Use_Constraints: None
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
Generated by mp version 2.8.6 on Mon Aug 20 10:36:54 2007