Naval Bathythermograph Temperature-Depth Profiles from 1968-1969

Temperature-depth profiles were collected using mechanical bathythermographs from eight Australian naval vessels across the western Pacific and Indian Oceans. The dataset contains observations processed into the NODC C128 standard format, with temperature recorded at uniform 5-meter intervals down to a maximum depth of approximately 285 meters. Data collection occurred from March 1968 to February 1969.

Use Cases

• Analyzing seasonal temperature changes in the upper ocean across multiple sea regions.
• Studying the spatial distribution of near-surface thermal gradients from vessel cruise tracks.
• Calibrating or validating models of historical mixed-layer depth based on paired temperature-depth values.
• Investigating naval vessel contributions to historical oceanographic data collection in the 1960s.

Strengths

• Data is standardized to the NODC C128 format, ensuring consistent structure.
• Covers a wide geographic area across ten major sea regions in the Pacific and Indian Oceans.
• Provides a focused one-year time series (1968-1969) for temporal analysis of the upper ocean.

Limitations

• Key metadata such as row count, file size, and specific column names are unavailable.
• Instrument limitation restricts observations to a maximum depth of ~285m, excluding deeper ocean structure.
• Conflicting last update dates exist between platforms (2026-04-01 on Data.gov vs. 1969-02 27 on NASA).

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce

Collection Method

Mechanical bathythermograph (MBT) instrument measurements processed by NODC.

Time Range

1968-03-01 to 1969-02-27

Freshness

2026-04-01 14:53:42.095063

Geography

Bismarck Sea, Coral Sea, Great Australian Bight, Indian Ocean, North Pacific Ocean, Philippine Sea, Solomon Sea, South China Sea, South Pacific Ocean, Tasman Sea