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High-resolution CTD/STD data from RV Alpha Helix in the Gulf of Alaska and North Pacific Ocean from 1991-07-24 to 1991-11-14 (NCEI Accession 9200039)

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: August 03, 2026 at 07:51 AM | Dataset Last Updated: February 15, 2023 at 12:00 AM
The Conductivity, Temperature and Depth (CTD) and other data were collected in Coastal Waters of S. Alaska. Data was collected in five cruises from Ship ALPHA HELIX. The data was collected over a period spanning from July 24, 1991 and November 14, 1991. Data was submitted in a tape from cruises L09-L011 and HX159-160 by Dr. Chirk Chu, Institute of Marine Science, University of Alaska, Fairbanks, AK. This dataset contains high-resolution data collected using CTD (conductivity-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 1 m. 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. Data has been processed and is available in F022-CTD-Hi Resolution file format of NODC.

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9200039 AIR TEMPERATURE - DRY BULB AIR TEMPERATURE - WET BULB BAROMETRIC PRESSURE cloud amount/frequency cloud type CONDUCTIVITY DISSOLVED OXYGEN

Complete Metadata
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accessLevel non-public
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describedByType application/octet-steam
description The Conductivity, Temperature and Depth (CTD) and other data were collected in Coastal Waters of S. Alaska. Data was collected in five cruises from Ship ALPHA HELIX. The data was collected over a period spanning from July 24, 1991 and November 14, 1991. Data was submitted in a tape from cruises L09-L011 and HX159-160 by Dr. Chirk Chu, Institute of Marine Science, University of Alaska, Fairbanks, AK. This dataset contains high-resolution data collected using CTD (conductivity-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 1 m. 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. Data has been processed and is available in F022-CTD-Hi Resolution file format of NODC.
distribution 
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identifier https://data.noaa.gov/waf/NOAA/NESDIS/ncei/accessions/iso/xml/9200039.xml
issued 1992-01-01T00:00:00.000+00:00
keyword 
[
  "9200039",
  "AIR TEMPERATURE - DRY BULB",
  "AIR TEMPERATURE - WET BULB",
  "BAROMETRIC PRESSURE",
  "cloud amount/frequency",
  "cloud type",
  "CONDUCTIVITY",
  "DISSOLVED OXYGEN",
  "DYNAMIC DEPTH ANOMALY",
  "HYDROSTATIC PRESSURE",
  "NITRATE",
  "OXYGEN",
  "pH",
  "phosphate",
  "SALINITY",
  "SEA STATE",
  "Secchi depth",
  "SIGMA-T",
  "silicate",
  "SOUND VELOCITY",
  "TOTAL PHOSPHORUS",
  "TRANSMISSIVITY",
  "VISIBILITY",
  "WATER COLOR",
  "water depth",
  "WATER TEMPERATURE",
  "WAVE HEIGHT",
  "WAVE PERIOD",
  "WEATHER",
  "WIND DIRECTION",
  "WIND FORCE",
  "WIND SPEED",
  "ZOOPLANKTON BIOMASS",
  "CTD",
  "meteorological sensor",
  "Secchi disk",
  "transmissometer",
  "physical",
  "profile",
  "RV Alpha Helix",
  "University of Alaska Fairbanks, Institute of Marine Science",
  "University of Alaska Fairbanks, Institute of Marine Science",
  "Gulf of Alaska",
  "North Pacific Ocean",
  "oceanography",
  "DOC/NOAA/NESDIS/NODC > National Oceanographic Data Center, NESDIS, NOAA, U.S. Department of Commerce",
  "UAK-F/SFOS/IMS > Institute of Marine Science, School of Fisheries and Ocean Sciences, University of Alaska Fairbanks",
  "EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE",
  "EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE > SURFACE TEMPERATURE > AIR TEMPERATURE",
  "EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS > WIND DIRECTION",
  "EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS > WIND SPEED",
  "EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD PROPERTIES > CLOUD FREQUENCY",
  "EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD TYPES",
  "EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > AQUATIC ECOSYSTEMS > PLANKTON > ZOOPLANKTON",
  "EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH",
  "EARTH SCIENCE > OCEANS > OCEAN ACOUSTICS > ACOUSTIC VELOCITY",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRATE",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > OXYGEN",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PH",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PHOSPHATE",
  "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > SILICATE",
  "EARTH SCIENCE > OCEANS > OCEAN OPTICS",
  "EARTH SCIENCE > OCEANS > OCEAN OPTICS > ATTENUATION/TRANSMISSION",
  "EARTH SCIENCE > OCEANS > OCEAN OPTICS > OCEAN COLOR",
  "EARTH SCIENCE > OCEANS > OCEAN OPTICS > SECCHI DEPTH",
  "EARTH SCIENCE > OCEANS > OCEAN PRESSURE > WATER PRESSURE",
  "EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE",
  "EARTH SCIENCE > OCEANS > OCEAN WAVES > SEA STATE",
  "EARTH SCIENCE > OCEANS > OCEAN WAVES > WAVE HEIGHT",
  "EARTH SCIENCE > OCEANS > OCEAN WAVES > WAVE PERIOD",
  "EARTH SCIENCE > OCEANS > SALINITY/DENSITY > CONDUCTIVITY",
  "EARTH SCIENCE > OCEANS > SALINITY/DENSITY > DENSITY",
  "EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY",
  "CTD > Conductivity, Temperature, Depth",
  "SECCHI DISKS > SECCHI DISKS",
  "TRANSMISSOMETERS",
  "Ships",
  "ALPHA HELIX (call sign: WSD7078, ICES code: 31HX, 1966-)",
  "OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN",
  "OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > GULF OF ALASKA"
]
landingPage https://www.ncei.noaa.gov/contact
language 
[]
license https://creativecommons.org/publicdomain/zero/1.0/
modified 2023-02-15T00:00:00.000+00:00
publisher 
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references 
[
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rights otherRestrictions
spatial -146.38,21.75,-160.61,60.11
temporal 1991-07-24T00:00:00+00:00/1991-11-14T00:00:00+00:00
theme 
[
  "geospatial"
]
title High-resolution CTD/STD data from RV Alpha Helix in the Gulf of Alaska and North Pacific Ocean from 1991-07-24 to 1991-11-14 (NCEI Accession 9200039)

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