The University of Alaska is responsible for this data which was collected aboard the R/V Alpha Helix cruise HX55 between 05/07/84 - 05/12/84 and cruise HX58 between 06/04/84 - 06/09/84 by Dr. Royer of the Institute of Marine Science. There were a total of 262 stations in the Gulf of Alaska area. Data has been processed by NODC to the NODC standard High-Resolution CTD/STD (F022) format. The F022 format contains high-resolution data collected using CTD (conductivity-temperature-depth) and STD (salinity-temperature-depth) instruments. As they are lowered and raised in the oceans, these electronic devices provide nearly continuous profiles of temperature, salinity, and other parameters. Data values may be subject to averaging or filtering or obtained by interpolation and may be reported at depth intervals as fine as 1m. Cruise and instrument information, position, date, time and sampling interval are reported for each station. Environmental data at the time of the cast (meteorological and sea surface conditions) may also be reported. The data record comprises values of temperature, salinity or conductivity, density (computed sigma-t), and possibly dissolved oxygen or transmissivity at specified depth or pressure levels. Data may be reported at either equally or unequally spaced depth or pressure intervals. A text record is available for comments.

The University of Alaska, Institute of Marine Science is responsible for this data collected aboard the R/V Alpha Helix on cruise number HX118 between September 14, 1988 to September 29, 1988 by Dr. T.C. Royer of the Institute of Marine Science. There was a total of 77 stations in the Gulf of Alaska. The station numbers are: 1-77. Field correction for this cruise was taken from Alpha Helix cruise HX118. Field correction for the STD data was derived by comparing single bottle samples to recorded values from the STD sensors. The field correction is based on 9 samples from a total of 11 stations. The CTD data is stored in F022 format in the current NODC storage system.

The University of Alaska is responsible for this data which was collected aboard R/V Alpha Helix cruise HX59, R/V Amak cruise AM04, and R/V Redoubt cruises RT31 - RT41, between 12/1/82 - 03/24/84, by Dr. George Hunt of the University of California, Irvine, and Dr. Burrell of the Institute of Marine Science. There were a total of 120 stations in the Bering Sea area, and a total of 448 stations in the Boca de Quadra area. Data has been processed by NODC to the NODC standard High-Resolution CTD/STD (F022) format. The F022 format contains high-resolution data collected using CTD (conductivity-temperature-depth) and STD (salinity-temperature-depth) instruments. As they are lowered and raised in the oceans, these electronic devices provide nearly continuous profiles of temperature, salinity, and other parameters. Data values may be subject to averaging or filtering or obtained by interpolation and may be reported at depth intervals as fine as 1m. Cruise and instrument information, position, date, time and sampling interval are reported for each station. Environmental data at the time of the cast (meteorological and sea surface conditions) may also be reported. The data record comprises values of temperature, salinity or conductivity, density (computed sigma-t), and possibly dissolved oxygen or transmissivity at specified depth or pressure levels. Data may be reported at either equally or unequally spaced depth or pressure intervals. A text record is available for comments.

The University of Alaska, Institute of Marine Science is responsible for these data collected aboard the R/V Alpha Helix on cruises HX123, HX124, HX125, and HX126, between May 5, 1989, and June 10, 1989. These data were collected for the Exxon Oil Spill Monitoring Program and the Gulf of Alaska Recirculation (GARS) Project. Funding was provided by the State of Alaska, Sea Grant, and the National Science Foundation. This data was submitted to NODC earlier. This dataset represents a resubmission due to fact that the earlier version had the wrong offsets applied. Field correction for the STD data was derived by comparing single bottle samples to recorded values from the STD sensors. The field correction is based on 15 samples from a total of 16 stations. The field corrections are: 3000 m CTD temperature mean (Nansen-STD) is 0.00536 and 3000 m CTD salinity mean (Nansen-STD) is -0.04131. Data has been processed by NODC to the NODC standard High-Resolution STD/CTD Data (F022) format. The F022 format contains high-resolution data collected using CTD (conductivity-temperature-depth) and STD (salinity-temperature-depth) instruments. As they are lowered and raised in the oceans, these electronic devices provide nearly continuous profiles of temperature, salinity, and other parameters. Data values may be subject to averaging or filtering or obtained by interpolation and may be reported at depth intervals as fine as 1m. Cruise and instrument information, position, date, time and sampling interval are reported for each station. Environmental data at the time of the cast (meteorological and sea surface conditions) may also be reported. The data record comprises values of temperature, salinity or conductivity, density (computed sigma-t), and possibly dissolved oxygen or transmissivity at specified depth or pressure levels. Data may be reported at either equally or unequally spaced depth or pressure intervals. A text record is available for comments.

The Conductivity, Temperature and Depth (CTD) data were collected from Gulf of Alaska using Ship ALPHA HELIX during three cruises HX14-HX145. The data was collected over a period spanning from September 11, 1990 to December 16, 1990. Data on a tape containing 148 station observations was submitted by Dr. Chirk Chu, Institute of Marine Science, University of Alaska, Fairbanks, AK. Data has been processed and is available in F022-CTD-Hi Resolution file format of NODC.

This dataset includes currents data from current meters in the Bering Sea, collected by Dr. H.J. Niebauer of the Institute of Marine Science. The meters were deployed and recovered during R/V Alpha Helix cruise HX112. This dataset also includes CTD data collected aboard the R/V Thompson on cruise number TT213 in the Bering Sea and Chukchi Sea area between 21-Jul-1987 to 10-Aug-1987 by L. Coachman of the University of Washington, Dept. of Oceanography, CTD data collected aboard the R/V Thompson on cruise number TT214 in the Bering Sea and Chukchi Sea area between 17-Aug-1987 and 29-Jul-1987 by C.P. McRoy of the Institute of Marine Science, CTD data collected aboard the R/V Alpha Helix in the Gulf of Alaska on cruise number HX108 between 30-Nov-1987 and 13-Dec-1987 and cruise number HX114 between 16-Jun-1988 and 29-Jun-1988 by Dr. T.C. Royer of the Institute of Marine Science. Data has been processed by NODC to the NODC standard F015- Current Meter Data and F022- CTD High Resolutions 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 F022 format contains high-resolution data collected using CTD (conductivity-temperature-depth) and STD (salinity-temperature-depth) instruments. As they are lowered and raised in the oceans, these electronic devices provide nearly continuous profiles of temperature, salinity, and other parameters. Data values may be subject to averaging or filtering or obtained by interpolation and may be reported at depth intervals as fine as 1m. Cruise and instrument information, position, date, time and sampling interval are reported for each station. Environmental data at the time of the cast (meteorological and sea surface conditions) may also be reported. The data record comprises values of temperature, salinity or conductivity, density (computed sigma-t), and possibly dissolved oxygen or transmissivity at specified depth or pressure levels. Data may be reported at either equally or unequally spaced depth or pressure intervals. A text record is available for comments.

CTD data were collected from the ALPHA HELIX from the Gulf of Alaska. Data were collected by the University of Alaska - Fairbanks; Institute of Marine Science (UAK/IMS) in support of Gulf of Alaska-1 (GAK-1) from 30 May 1995 to 25 June 1995. Parameters include profiles of temperature, salinity, fluorescence, and oxygen.

Depth, fluorescence, oxygen, salinity, and water temperature data were collected from R/V ALPHA HELIX from September 17, 1986 to September 25, 1986. Data were submitted by University of Alaska - Fairbanks; Institute of Marine Science and California Dept of Fish and Game as part of the Inner Shelf Transport and Recycling Project (ISHTAR). These data were collected using CTD casts in the Bering Sea.

This is calibrated CTD downcast data from five Alpha Helix cruises: HX235, 8/1/2000 - 9/30/2000 HX250, 9/1/2001 - 9/30/2001 HX260, 6/1/2002 - 6/30/2002 HX274, 6/1/2003 - 7/30/2003 HX290, 8/29/2004 - 9/6/2004

Physical and nutrient profile data were collected using bottle casts from R/V ALPHA HELIX in the Gulf of Alaska from April 6, 1989, to April 11, 1989. Data were submitted by Dr. Thomas C. Royer of University of Alaska - Fairbanks; Institute of Marine Science. Data were collected by using bottle casts in the Gulf of Alaska.