The limits of shelf water south of Cape Cod, 1941 to 1972

Some 19,000 batbythermograms and 1,600 oceanographic stations in the region 39° to 41°N, 69° to 72° W have been examined for evidence of changes in the character and position of the shelf water/slope water boundary. Results show a) the boundary, identified by the 10° isotherm, intersects the bottom within 16 km of the 100-m curve about 80 percent of the time, with a seasonal progression from the south in the winter to north in the foll;..