Submarine Hydrothermal Temperature Data From Bransfield Strait

Two anchored instrument lines collected temperature data in the Bransfield Strait, Antarctica, each equipped with a chain of 5 thermometers and a data logger with a 262,000-word capacity. The GEBRATERM project, organized by SCIOPS, conducted this work during Antarctic campaigns, including DRAKE 95 and FRUELA, with data collection concluding in December 1995.

Use Cases

• Analyze temperature time-series from the Aanderaa TR7 1607 logger to detect anomalies indicative of hydrothermal fluid discharge.
• Map thermal gradients using data from the five-thermometer Aanderaa 2862S chains anchored at specific volcanic sites.
• Correlate CTD profile data and water samples with bottom temperature records to study suspended material near potential vents.
• Study temporal patterns of seafloor temperature by examining measurements recorded at 20-minute intervals.

Strengths

• High-resolution temporal data with measurements recorded every 20 minutes.
• Deployment at two distinct, geologically characterized sites: one inside a crater volcano and one on a suspected fault line.

Limitations

• Unknown total number of data points or rows collected.
• Data is temporally stale, with the last update recorded in December 1995.

Provenance

Source

SCIOPS via NASA EarthData.

Collection Method

Field deployment of anchored instrument lines with temperature loggers and chains of thermometers, supplemented by ship-based CTD profiles and water sampling.

Time Range

Data collected during Antarctic campaigns including DRAKE 95 and FRUELA, concluding in 1995.

Freshness

1995-12-01

Geography

Bransfield Strait, Antarctica. Specific anchor points at volcanic sites (approx. 62°S, 58°W).