WATER MASSES OF THE EASTERN BERING SEA SHELF
The BEST-BSIERP Bering Sea Project mounted or supplemented several research cruises in the Eastern Bering Sea in spring-autumn 2007-2010, greatly enhancing previous coverage especially during ice-covered conditions. Water mass designations help to simplify the understanding and clarify the origins of ecosystem properties. Examining the T-S (temperature-salinity) diagrams from over 2000 CTD casts collected during 11 cruises, we identified 3 previously known water masses – Anadyr (AW), Bering Shelf (BSW) and Alaska Coastal Water (ACW) – and 3 water masses modified by brine rejected during sea-ice formation (Rejected Brine-AW, RB-BSW, RB-ACW) that comprise the core of the Cold Pool. Water-mass maps reveal AW on the outer shelf, BSW on the middle shelf and ACW on the inner shelf south of 59°N. North of there, RB-BSW and RB-ACW occupy the middle and inner shelf. In summer 2008, Mordy et al. (doi: 10.1016/j.dsr2.2012.02.012) noticed a sharp decrease in the nutrient content of the lower layer in the central portion of the 70-m transect. A horizontal slice at 50 m shows that transect intersected low-nutrient ACW there with richer BSW to the north and south.
Cokelet, E. D., NOAA Pacific Marine Environmental Laboratory, USA, email@example.com
Time: 16:00 - 18:00
Location: Poster/Exhibit Hall
Presentation is given by student: No