This dataset contains water temperature, salinity, zooplankton, and fish survey (salmonids and other pelagic fishes) data taken by CTD, nets, and trawls from research vessel Hokko Maru in the Bering Sea. This cruise is U.S. State Department MSR U2021-002 as part of the World Data Service for Oceanography. Data are in XLSX format.

This dataset contains number of fish species collected by surface trawl, and tagged salmon during 2020 summer in the Bering Sea. The samplings were conducted at 17 monitoring stations and two additional stations. Date and location of each station can be specified from the dataset. This dataset is U.S. State Department MSR RATS U2020-001 as part of the World Data Service for Oceanography. Data are in XLSX format, cruise report is in PDF.

This dataset contains physical oceanography and fish abundance collected by CTD, surface trawl, and tagged fish from the research vessel Hokko Maru in the Central Bering Sea. This dataset is U.S. State Department MSR RATS U2022-001 as part of the World Data Service for Oceanography. Data are in XLSX format, cruise report is in DOC.

This cruise was dedicated to salmon survey in the North Pacific, but its scientific program was cancelled due to COVID-19 outbreak on board of the ship on the way to the Bering Sea. No data are expected. Original cruise plans are as follows. Pacific salmon (Oncorhynchus spp.) is one of the most important fishery resources in the North Pacific. Japanese research vessels have monitored the condition of Pacific salmon stocks since 1952. The current R/V Hokko maru was launched in 2004 and the salmon research cruise using a surface trawl in the summer Bering Sea has been carried out since 2007. The main objective for this cruise is to conduct the annual monitoring survey for Japanese chum salmon (O. keta) stocks in the Bering Sea known as their major feeding ground. A positive correlation between annual CPUE of immature chum salmon in each research cruise and a subsequent harvest along Japanese coasts of the corresponding blood-year stocks has found in most cases to date, suggesting the possibility to predict future resource conditions. The annual monitoring survey includes the collection of data on physical oceanography, trophic interactions among zooplankton, salmonids, and organisms at higher trophic levels, and genetic analysis of stock composition of chum salmon. This dataset is U.S. State Department MSR U2023-004 as part of the World Data Service for Oceanography. Cruise reports are in PDF.

Moored current meter data were collected from the Bering Sea, Gulf of Alaska, and North Pacific Ocean from February 16, 1994 to May 25, 2002. Data were collected by the Pacific Marine Environmental Laboratory (PMEL) as part as part of the Fisheries-Oceanography Coordinated Investigations (FOCI). Current meter parameters include East/West velocity components (U), North/South velocity component (V), current speed, current direction, salinity, pressure, conductivity, and temperature. Data are not in standard formats and are self documenting.

This dataset contains fish/shellfish survey data collected in the Bering Sea from June 14, 1985, to August 8, 1986, by Douglas Martin, Envirosphere Co. Data has been processed to the NODC standard Fish/Shellfish Surveys (F123) format. The F123 format is used for data from field sampling of marine fish and shellfish. The data derive from analysis of midwater or bottom tow catches and provide information on population density and distribution. Cruise information, position, date, time, gear type, fishing distance and duration, and number of hauls are reported for each survey. Environmental data may include meteorological conditions, surface and bottom temperature and salinity, and current direction and speed. Bottom trawl or other gear dimensions and characteristics are also reported. Catch statistics (e.g., weight, volume, number of fish per unit volume) may be reported for both total haul and for individual species. Biological characteristics of selected specimens, predator/ prey information (from stomach contents analysis), and growth data may also be included. A text record is available for comment.

Salinity data were collected using moored current meter casts in the North Pacific Ocean, Bering Sea, and Gulf of Alaska from October 3, 1984 to May 1, 1988. Data were submitted by Pacific Marine Environmental Laboratory (PMEL) as part of the Arctic Polynya EXperiment (APEX) and Fisheries-Oceanography Cooperative Investigation (FOCI) project. Data has been processed by NODC to the NODC standard F015- Current Meter Data and F017- Pressure Gauge Data formats. The F015 format is used for time series measurements of ocean currents. These data are obtained from current meter moorings and represent Eulerian method of current measurement, i.e., the meters are deployed at a fixed point and measure flow past a sensor. Position, bottom depth, sensor depth, and meter characteristics are reported for each station. The data record comprises values of east-west (u) and north-south (v) current vector components at specified date and time. Current direction is defined as the direction toward which the water is flowing with positive directions east and north and negative directions west and south. Data values may be subject to averaging or filtering and are typically reported at 10-15 minute time intervals. Water temperature, pressure, and conductivity or salinity may also be reported. A text record is available for optional comments. The F017 format contains time series measurements of seawater pressure from anchored or bottom-mounted sensors. Measurements of variations at depth of seawater pressure provide information on tidal and storm flows, ocean circulation, and other phenomena that cause changes in sea surface elevation or slope and that can be detected from their pressure signature. Position, bottom depth, and gauge depth are reported for each station. The data record comprises values of total pressure at specified date and time. Data values may be subject to averaging or filtering and are typically reported at time intervals of 10-15 minutes. Seawater temperature may also be reported. Comments may be reported in a text record.

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