Geomorphology of the Sabrina Coast Continental Slope and Rise

A 2020 study published in Marine Geology details the geomorphology of the continental slope and rise seaward of the Totten Glacier in East Antarctica, spanning longitudes 112°E to 122°E. The dataset describes a suite of submarine canyons and ridges, analyzing their formation processes and sediment dynamics. It was produced by researchers including E. O'Brien and A.L. Post, with data contributed by the Australian Ocean Data Network.

Use Cases

• Classifying ridge types (e.g., asymmetric ridges, contourites) based on morphological features and sediment accretion processes.
• Analyzing canyon thalweg profiles (concave vs. convex) to infer sediment source and transport mechanisms from the shelf edge or ridge flanks.
• Mapping the spatial distribution of canyons and ridges to correlate geomorphology with underlying factors like ice drainage basins or long-lived depocenters.
• Investigating the interaction between ridge morphology and ocean currents using features indicating sediment advection and lofting.
• Identifying sampling locations for sedimentary records by targeting ridges described as prime archives of Totten Glacier-ocean interaction history.

Strengths

• Peer-reviewed publication in Marine Geology (2020) provides authoritative analysis.
• Covers a defined 10-degree longitudinal segment (112°E-122°E) of the Antarctic margin.
• Describes a continuum of mixed contourite-turbidite systems with detailed process interpretation.

Limitations

• Underlying raw observational data (bathymetry, samples) is not directly accessible.
• Spatial coverage is limited to one specific region of the Sabrina Coast.
• Analysis is static, representing a snapshot interpretation without explicit temporal data series.

Provenance

Source

Australian Ocean Data Network, citing the publication by O'Brien et al. in Marine Geology.

Collection Method

null

Time Range

null

Freshness

null

Geography

Continental slope and rise seaward of the Totten Glacier, East Antarctica (112°E to 122°E).