Originator: Bradford Butman
Originator: Tammie Middleton
1-m interval contours of smoothed multibeam bathymetry in western Massachusetts Bay map Quadrangles 1-3 (WMB_1MCTR.SHP)
Geospatial_Data_Presentation_Form: vector digital data
Series_Name: Data Series
Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Originator: Butman, Bradford
Originator: Valentine, Page C.
Originator: Middleton, Tammie J.
Originator: Danforth, William W.
A GIS Library of Multibeam Data for Massachusetts Bay and the Stellwagen Bank National Marine Sanctuary, Offshore of Boston, Massachusetts
Series_Name: Data Series
Publication_Place: Reston, VA
Publisher: U.S. Geological Survey
The U.S. Geological Survey has conducted geologic mapping to characterize the sea floor offshore of Massachusetts. The mapping was carried out using a Simrad Subsea EM 1000 Multibeam Echo Sounder on the Frederick G. Creed on four cruises conducted between 1994 and 1998. The mapping was conducted in cooperation with the National Oceanic and Atmospheric Administration (NOAA) and with support from the Canadian Hydrographic Service and the University of New Brunswick.
The long-term goal of this mapping effort is to produce high-resolution geologic maps and a Geographic Information System (GIS) project that presents images and grids of bathymetry, shaded relief bathymetry, and backscatter intensity data from these surveys that will serve the needs of research, management and the public.
This shapefile shows sea floor bathymetry as contours at 5-m intervals in western Massachusetts Bay (map Quadrangles 1 - 3). The contours were derived from a 6-m resolution grid of multibeam data (wmb_bathy6m) that had been smoothed over a 9-cell by 9-cell rectangle using the "focalmedian" routine.
Currentness_Reference: publication date
Maintenance_and_Update_Frequency: None planned
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: 1-meter contour
Theme_Keyword: USGS Map I-2731
Theme_Keyword: USGS Map I-2732
Theme_Keyword: USGS Map I-2733
Theme_Keyword: western Massachusetts Bay Quadrangle 1
Theme_Keyword: western Massachusetts Bay Quadrangle 2
Theme_Keyword: western Massachusetts Bay Quadrangle 3
Theme_Keyword: sea floor
Theme_Keyword: Woods Hole Science Center
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: U.S. Geological Survey
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: sea-floor characteristics
Theme_Keyword: geospatial datasets
Place_Keyword: Massachusetts Bay
Place_Keyword: western Massachusetts Bay
Place_Keyword: Stellwagen Basin
Place_Keyword: MWRA ocean outfall
Place_Keyword: Gulf of Maine
Place_Keyword: United States
Place_Keyword: North Atlantic Ocean
These data are not to be used for navigation purposes. Mariners should refer to the appropriate nautical chart.
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.
Contact_Organization: U.S. Geological Survey
Contact_Person: Bradford Butman
Address_Type: mailing and physical address
Contact_Voice_Telephone: (508) 548-8700 x2212
Contact_Facsimile_Telephone: (508) 457-2309
Hours_of_Service: 8 a.m. - 5 p.m.
Address: 384 Woods Hole Rd
City: Woods Hole
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