5-m interval contours of smoothed multibeam bathymetry in western Massachusetts Bay map Quadrangles 1-3 (WMB_5MCTR.SHP)

• Main Authors: Bradford Butman, Tammie J. Middleton
• Format: Dataset
• Language: unknown
• Published: USGS Science Data Catalog 2007
• Subjects: contour; 5-meter contour; USGS Map I-2731; USGS Map I-2732; USGS Map I-2733; western Massachusetts Bay Quadrangle 1; western Massachusetts Bay Quadrangle 2; western Massachusetts Bay Quadrangle 3; sea floor; sea floor mapping; polyline shapefile; Woods Hole Science Center; WHSC; Coastal and Marine Geology Program; CMGP; U.S. Geological Survey; USGS; oceans; elevation; Massachusetts Bay; western Massachusetts Bay; Boston; Gloucester; Massachusetts; Stellwagen Basin; MWRA ocean outfall; MWRA; Gulf of Maine; United States; North Atlantic Ocean; Quadrangle; North Atlantic
• Online Access: https://search.dataone.org/view/8f20cfdb-39d1-45bb-ab39-977e23551359

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.