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Research Expedition to the Gulf of Alaska - 2DY11

NOAA Ship Oscar Dyson
Fisheries Oceanography Coordinated Investigations and Gulf of Alaska - Integrated Ecosystem Research
May 31 to June 9, 2011

Updated: June 06, 2011

NEW Cruise updates from the cruisers

Oscae Dyson with one of the Aleutian volcanos in the backgroundBongo net deployed from the DysonPicture of Kodiak landscape

Welcome to the web site for our late spring Gulf of Alaska research cruise. The objectives of this cruise are to conduct an ichthyoplankton survey and fisheries oceanography process studies in the region between the Shumagin Islands and Shelikof Strait. We will assess the abundance of larval pollock, estimate their transport rates, and identify other factors influencing their growth and survival. We will also occupy stations on Line 8 to continue our 26-year time series of environmental and biological conditions in Shelikof Strait that are useful in an integrated ecosystem assessment. In addition to the FOCI standard sampling, stations have been selected from the main grid of the GOA IERP research project for additional sampling. At these stations we will deploy a neuston net to assess larval sable fish; one of the five target species for the GOA IERP. The GOA IERP is funded by Alaska’s North Pacific Research Board. EcoFOCI is providing expertise for both the lower trophic level and modeling modules of the GOA IERP.

The activities on this cruise also fit into a larger, multi-year project addressing the interrelationship of climate, oceanography, fisheries, ocean biology, ocean chemistry, and seabirds in a changing ecosystem. This spring expedition is funded through NOAA's FOCI program.

cruise tracks of R/V Thompson showing chlorophyll near-surface. May 2011. D.Kachel.

Operations primarily consist of plankton sampling, hydrographic measurements, and water sampling. We will conduct bongo tows and Neuston net tows. Hydrography includes digital profiles of temperature, salinity (calculated from temperature, conductivity, and pressure), pressure, chlorophyll and dissolved oxygen. We also take CTD water samples for phytoplankton, microzooplankton, nutrient and oxygen analysis. We are sampling on a pre-defined grid of stations that has been sampled annually for the past 25 years.

Related Links
Oscar Dyson location, Shiptracker site
Oscar Dyson ship information
About the FOCI/EcoFOCI Program
About the GOA IERP Program - Integrated Ecosystem Research
Gulf of Alaska Marine Weather Forecast (National Weather Service)
Buoys in work area showing current conditions: 46084 46205
View web pages from other EcoFOCI Research Cruises

A Short Glossary
NPRB - North Pacific Research Board
GOA - Gulf of Alaska
IERP - Integrated Ecosystem Research Program
NOAA - National Oceanic and Atmospheric Administration
NPCREP - North Pacific Climate Regimes and Ecosystem Productivity

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