The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder easternberings00hood Year: 1981 Hydrographic structure 43 and therefore denser) water from the oceanic domain intrudes beneath cooler and fresher shelf water, thus maintaining stratification. Elsewhere, low-salinity water from melting ice may stratify water that was well mixed during autumn and winter (by wind stirring and surface cooling). A cross section taken from southeast of the Pribilofs toward Cape Newenham in February 1978 (Fig. 4-9) illustrated intrusion of the basin water. Betwee
The Eastern Bering Sea Shelf : oceanography and resources / edited by Donald W. Hood and John A. Calder easternberings00hood Year: 1981 Hydrographic structure 43 and therefore denser) water from the oceanic domain intrudes beneath cooler and fresher shelf water, thus maintaining stratification. Elsewhere, low-salinity water from melting ice may stratify water that was well mixed during autumn and winter (by wind stirring and surface cooling). A cross section taken from southeast of the Pribilofs toward Cape Newenham in February 1978 (Fig. 4-9) illustrated intrusion of the basin water. Between the shelf break and the 100 m isobath (, outer domain) water warmer than C and saltier than *^/oo intruded beneath shelf water which was both colder and fresher. Inshore of the 100 m isobath the water column was well mixed, colder (< C) and fresher (<). Data from several stations with similar profiles, saltier and warmer near the bottom, were also taken near the Pribilof Islands during April and May 1978, and Coachman and Charnell (1977) showed data with this character taken in March 1976. There is sufficient coverage of the outer domain during late winter and early spring to suggest that cold and fresh shelf water overlies warmer and more saline basin water, and that this domain remains stratified during winter. station 85 0 Middle Shelf t Outer Shelf t Oceanic 22-23 Feb 1978 Figure 4-9. Temperature (°C) and salinity (°/oo) across the shelf in February 1978. This section is from southeast of the Pribilofs toward Cape Newenham. In the outer domain the deeper water is warmer, but more saline and therefore denser, than the shallower water. Melting ice in the middle shelf can also cause stratification during the winter, but inshore within the coastal domain mechanical stirring keeps the water column well mixed. In February 1978 we observed (by satellite imagery, see Fig. 5-11, Chapter 5) that ice near Nunivak Island moved about 100 km southeast
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