OMG SBES: Greenland Glacier Bathymetry from Ship Tracks

Oceans Melting Greenland (OMG) project data provides in situ depth measurements from ship-based Singlebeam Echo Sounder (SBES) systems around Greenland's ocean-terminating glaciers. The ship tracks are irregularly patterned, constrained by floating ice and weather, creating a point-cloud dataset rather than a continuous swath. This bathymetry is used to assess the ocean's contribution to glacial melt.

Use Cases

• Mapping seafloor topography around glacier termini to understand submarine melt rates.
• Calibrating and validating wider-coverage bathymetric models or satellite-derived data.
• Analyzing the relationship between ocean depth and glacier retreat patterns.
• Studying the constraints on ship-based data collection in ice-covered waters.

Strengths

• Data originates from the NASA-led Oceans Melting Greenland (OMG) project, a focused scientific mission.
• Provides direct in situ measurements, which are critical for validating remote sensing data.
• Cross-platform presence on Data.gov and NASA EarthData signals its importance and curation.

Limitations

• Column names and row counts are unknown across all sources, limiting immediate analysis.
• Conflicting 'last updated' dates (2016 on NASA vs. 2026 on Data.gov) create uncertainty about data currency.
• Sparse metadata; file formats listed (JPEG, BIN, TEXT, ISO, PDF) suggest ancillary files but the core data structure is unclear.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

In situ depth measurements collected from Singlebeam Echo Sounder (SBES) instruments onboard a ship.

Time Range

null

Freshness

2026-04-09 23:19:03.889835 (from Data.gov, but conflicts with NASA's 2016 date)

Geography

Ocean-terminating glaciers of Greenland.