Surface Temperature and Salinity off the Washington and British Columbia Coasts, August, 1958 and 1959

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Abstract
Oceanographic data collected off the Washington and British Columbia coasts during August, 1958 and 1959, through Canadian and United States research programs provide the best synoptic coverage attained in this area. Comparison of August surface data for the two years shows that the effects of local runoff can be traced over several hundred miles offshore. This implies, but does not necessarily confirm, the absence of any appreciable net surface current parallel to the coast northward of the Strait of Juan de Fuca to Dixon Entrance, in summer.The 1958 observations were made at the time of the anomalous Fraser River sockeye run through Johnstone Strait and provide a good picture of the existing coastal and offshore oceanographic conditions. It is suggested that the seaward extent of dilute surface water may determine the location where homeward migrating salmon enter coastal waters.

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