Abstract

Contours of time series bathythermograph data taken at the Boston light vessel station over several years (1964–1971) indicate that upwelling occurs in Massachusetts Bay during most summers. Cold more saline water is noted near the bottom progressing upward through the water column. Upwelling rates for 1971 of 2.0×10−4 cm s−1 and 5×10−4 cm s−1 were computed from the upward migration of isotherms and by the equations of Yoshida (1955), respectively. The upwelling period (summer) coincides with the time of predominate southeasterly to westerly winds. A definite decrease in sea level height observed during the summer of 1971 may have been due to the offshore wind-driven transport of surface water.

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