Gulf of Alaska CTD Profiles from RV Alpha Helix 1980

Oceanographic profiles contain high-resolution conductivity, temperature, and depth data collected from the RV Alpha Helix in the Gulf of Alaska. The dataset covers a three-day cruise from June 11 to June 13, 1980, and has been processed into the NODC standard F022 format. Data originates from the National Oceanic and Atmospheric Administration.

Use Cases

• Analyzing vertical structure of temperature and salinity in the Gulf of Alaska.
• Calculating derived oceanographic parameters like density (sigma-t) from the core measurements.
• Studying short-term oceanographic conditions during the specific cruise period.
• Correlating hydrographic data with potential meteorological and sea surface condition records.

Strengths

• Data is in a standardized, documented format (NODC F022).
• Provides high-resolution profiles with potential sampling as fine as 1-meter intervals.
• Includes precise spatial and temporal metadata (position, date, time) for each station.

Limitations

• Specific column names, row counts, and file size are not provided by any source.
• The temporal coverage is very brief, limited to a single three-day cruise.
• Conflicting freshness information exists between a 2026 administrative update and a 1980 data collection date.

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce

Collection Method

Data collected using CTD/STD instruments from RV Alpha Helix and processed by NODC.

Time Range

1980-06-11 to 1980-06-13

Freshness

2026-04-01 15:09:43.900605

Geography

Gulf of Alaska