Obsolete - AFSC/RACE/EcoFOCI: 2010 BEST and BSIERP Study 1WE10/WE10-08

Ecosystem & Fisheries-Oceanography Coordinated Investigations (Eco-FOCI) is an effort by National Oceanic and Atmospheric Administration (NOAA) and associated academic scientists. Eco-FOCI's goal is to understand the effects of abiotic and biotic variability on ecosystems of the North Pacific Research Board (NPRB), the Alaska Ocean Observing System (AOOS), and PMEL/AFSC base. This was the last of a series of cruises in support of research of the Bering Ecosystem Study (BEST) and Bering Sea Integrated Ecosystem Study (BSIERP) co-sponsored by the National Science Foundation and the North Pacific Research Board.

The primary purpose of this cruise was to observe the ecosystem of the eastern Bering Sea. Operations consisted primarily of hydrographic measurements (with samples for oxygen, chlorophyll, nutrients, and salinity); and zooplankton sampling using MARMAP bongo tows outfitted with 60 and 20 cm bongos, with 153, 333, and 505 micron mesh nets,and triple CalVET tows (California Vertical Egg Tows) conducted near the four mooring sites on the 70-m isobath. We were accompanied by two volunteer bird watchers working for Kathy Kuletz of the U.S. Fish and Wildlife Service Division of Migratory Bird Management in Anchorage, AK. The goal of that project is to examine seabird and marine mammal distribution relative to oceanographic and biological features of the Bering Sea. They began their surveys on 23 August 2010 from Dutch Harbor, and completed their Bering Sea observations on 9 September at the port of Dutch Harbor. One observer (D. Troy) remained onboard for the transit to Seattle, arriving 17 September. The data set will eventually include surveys from that transit across the Gulf of Alaska. Hydrographic and zooplankton stations were occupied along a 1050 km line along the 70-m isobath, as well as four other cross-shelf lines. These transects were the same as the lines occupied during the summer BEST BSIERP cruise, TN250. After completing these transects, we made a 41-station survey of Pribilof Canyon, which was cut short by rough seas and high winds. So, we proceeded to the area near Unimak Pass and occupied a series of stations forming a box that permits us to estimate transport through the Pass, across the Aleutian North Slope Current, and the Bering Slope current as well as an assessment of the zooplankton there.

Loaded by batch 3770, 12-05-2012 12:34

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