CAPSTONE Leg IV: Deepwater Oceanographic and ROV Data from Northwestern Hawaiian Islands

Oceanographic data from the 2015 EX1504L4 expedition focuses on deep waters around the Papahānaumokuākea Marine National Monument and Johnston Atoll. The dataset includes 24-hour ship navigation, meteorological and oceanographic sensor data, water column profiles, and ROV dive observations from depths of 250 to 6,000 meters. It was collected as part of the NOAA CAPSTONE campaign to establish baseline information for Pacific marine protected areas.

Use Cases

• Establishing environmental baselines based on CTD rosette and water column profile data.
• Mapping deep-sea benthic habitats using high-resolution visual surveys from ROV dives.
• Analyzing temporal oceanographic patterns from 24-hour ship navigation and sensor data.
• Studying deep-water species distribution and geology from biological and geological sample collections.

Strengths

• Data collection targeted a specific, ecologically significant region (Papahānaumokuākea Marine National Monument and Johnston Atoll).
• Includes multiple complementary data modalities: ship sensor data, water column profiles, and ROV-based visual and sample data.
• ROV dives cover a wide depth range from 250 to 6,000 meters, enabling mesophotic to hadal zone observations.

Limitations

• Column names and specific data schema are not provided in any source, limiting immediate usability.
• Conflicting 'last updated' dates (2015-09-30 and 2026-04-01) create uncertainty about metadata maintenance.
• No information on dataset size, row count, or license is available from the sources.

Provenance

Source

NOAA_NCEI

Collection Method

Collected during the NOAA Ship OKEANOS EXPLORER EX1504L4 expedition using ship sensors, CTD rosettes, and ROV systems.

Time Range

2015-09-07 to 2015-09-30

Freshness

2026-04-01 15:32:27.303814

Geography

North Pacific Ocean, specifically deep waters in and around Papahānaumokuākea Marine National Monument (Northwestern Hawaiian Islands) and Johnston Atoll.