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Chukchi Sea Hydrographic (CTD) Data from the R.V. Alpha Helix Cruise, September 1996


In an international collaborative effort, Japanese, Russian, and U.S. scientists collected hydrographic Conductivity, Temperature, Depth (CTD) samples in the Chukchi Sea north of the Bering Strait during the R.V. Alpha Helix cruise between 31 August and 27 September 1996. The CTD data were converted from the format used by the Institute for Marine Studies, University of Alaska Fairbanks, to standard Sea-Bird format. The data collection contains values for water depth, pressure, temperature, potential temperature, conductivity, salinity, sigma-t, sigma-theta, fluorescence, transmissometer output, oxygen probe O2 concentrations, geopotential anomaly, dynamic height, specific volume anomaly, and buoyancy.

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Additional information

  • 1.0 (2009-04-29)
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Related projects
Language English
Grant Code OPP- 9630774, OPP-9905947
ISO Topic Categories
  • climatologyMeteorologyAtmosphere
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Temporal coverage

Begin datetime 1996-08-31 00:00:00
End datetime 1996-09-27 23:59:59

Spatial coverage

Map data from IBCSO, IBCAO, and Global Topography.

Maximum (North) Latitude: 70.00, Minimum (South) Latitude: 65.00
Minimum (West) Longitude: -170.00, Maximum (East) Longitude: -165.00

Primary point of contact information

John P. Christensen <>

Additional contact information


Example citation following ESIP guidelines:

Christensen, J. 2009. Chukchi Sea Hydrographic (CTD) Data from the R.V. Alpha Helix Cruise, September 1996. Version 1.0. UCAR/NCAR - Earth Observing Laboratory. Accessed 02 Dec 2020.

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