From Australian Oceans Data Network
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Bathymetry and Ice draft maps for the Amery Ice Shelf cavity

Created 23/06/2025

Updated 23/06/2025

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Ocean circulation beneath ice shelves and associated rates of melting and freezing are influenced strongly by water column thickness and depth. The shape of the cavity beneath the Amery Ice Shelf is important for our understanding of ice shelf stability and freshwater input to the ocean and their dependence on climate. New seismic surveys of the centre region of the Amery Ice Shelf and ice-draft data taken at the grounding line has provided a considerable amount of new water-column thickness and bathymetry data. The data is adjusted in the unknown region south of 71 degrees 35 minutes S by comparing the complex error between simulated tides against in situ GPS observations. A finite element, hydrodynamic ocean tide model is used to simulate the 4 major constituents (S2, M2, K1 and O1). The new data differs from a previous bathymetry map in a number of places. Significantly, there is channel that leads from the Prydz bay depression into the deepest part of the AIS cavity in the south through a series of depressions. This technique has particular application when the water column beneath ice shelves is inaccessible and in situ GPS data is available.

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Additional Info

Field Value
Title Bathymetry and Ice draft maps for the Amery Ice Shelf cavity
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/en/dataset/cfcf807f-a22c-46ae-b02f-69b8d2778fb7
Contact Point
Australian Ocean Data Network
metadata@aad.gov.au
Reference Period 01/01/1950 - 01/04/2006
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        66.0,
        -73.6
      ],
      [
        79.0,
        -73.6
      ],
      [
        79.0,
        -66.0
      ],
      [
        66.0,
        -66.0
      ],
      [
        66.0,
        -73.6
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Australian Oceans Data Network

Data Source

This dataset was originally found on Australian Oceans Data Network "Bathymetry and Ice draft maps for the Amery Ice Shelf cavity". Please visit the source to access the original metadata of the dataset:
https://catalogue.aodn.org.au/geonetwork/srv/eng/csw/dataset/bathymetry-and-ice-draft-maps-for-the-amery-ice-shelf-cavity