Atlantic Ocean CTD Sound Velocity Profiles from Fixed Platforms 1986-1989

9000121 contains high-resolution oceanographic profiles processed by the National Oceanographic Data Center (NODC). The dataset includes conductivity-temperature-depth (CTD) and salinity-temperature-depth (STD) measurements from the R/V Endeavor and fixed platforms for the SEQUAL project. Data was submitted by Dr. Eli Katz of Lamont-Doherty Geological Observatory and reprocessed in 1991.

Use Cases

• Analyzing vertical profiles of temperature, salinity, and computed density (sigma-t) at depth intervals as fine as 1 meter.
• Studying sound velocity variations in the water column for acoustic modeling.
• Investigating seasonal oceanographic conditions in the equatorial Atlantic for the SEQUAL project.
• Calibrating or validating ocean models with in-situ CTD and STD instrument data.
• Examining metadata for each station including cruise information, position, date, time, and environmental conditions during the cast.

Strengths

• Data is in the standardized NODC High-Resolution CTD/STD (F022) format, ensuring consistent structure.
• Profiles provide nearly continuous measurements, with values reported at depth intervals as fine as 1 meter.
• Includes data from multiple deployments and platforms, covering a time range from May 1986 to November 1989.

Limitations

• The file 'Sal' contains duplicate records due to overlapping instrument deployments.
• Key metadata such as exact row count, column names, and file size are not provided by any source.
• Sources conflict on the 'last updated' date, listing both 1989-11-12 and 2026-03-06.

Provenance

Source

Dr. Eli Katz, Lamont-Doherty Geological Observatory; data processed by the National Oceanographic Data Center (NODC).

Collection Method

Collected using CTD and STD instruments lowered and raised from the R/V Endeavor and fixed platforms, processed from submitted tapes.

Time Range

1986-05-12 to 1989-11 12

Freshness

2026-03-06 00:23:50.639473

Geography

NE Atlantic (limit-40 W) and other locations, including sites Sal and Sol for the SEQUAL project.