DEEP SEARCH - AT41: Deepwater Atlantic Habitats II Expedition Data

DEEP SEARCH - AT41 expedition data integrates oceanographic measurements, submersible data, and imagery from a 2018 cruise targeting cold seeps and canyons off the U.S. East Coast. The dataset likely contains Acoustic Doppler Current Profiler (ADCP), Conductivity-Temperature-Depth (CTD), and underway sensor data, alongside visual documentation from submersibles. Its primary goal was to validate and map seep sites, canyons like Keller and Hatteras, and hard-bottom features between Virginia and Georgia.

Use Cases

• Mapping seep community distribution based on submersible imagery and geospatial coordinates.
• Analyzing water column properties over seep sites using CTD and ADCP profiles.
• Validating seafloor habitat models by correlating sensor data with visual observations from submersibles.
• Studying canyon geomorphology and associated ecosystems using integrated sensor and image data.

Strengths

• Integrates multiple data modalities including physical oceanography (ADCP, CTD), submersible observations, and imagery.
• Focuses on specific, scientifically valuable features: cold seeps, submarine canyons, and hard-bottom habitats.
• Data collection was part of a targeted expedition (DEEP SEARCH - AT41) with a clear validation and mapping objective.

Limitations

• Critical metadata is missing or conflicting: column names, dataset size, row counts, and specific license are unknown.
• Update timestamps conflict between platforms, with one showing a future date (2026-04-01) and another from 2018, casting doubt on metadata accuracy.
• Documentation gaps exist, as descriptions are repeated verbatim across platforms without additional technical detail.

Provenance

Source

National Oceanic and Atmospheric Administration, Department of Commerce

Collection Method

Collected during the DEEP SEARCH - AT41 expedition on R/V Atlantis.

Time Range

2018-08-19 to 2018-09-02

Freshness

2026-04-01 15:16:50.289957

Geography

North Pacific Ocean, specifically seep sites, canyons, and hard bottom features less than 100 nautical miles offshore between Virginia and Georgia, U.S. East Coast.