Bathymetry and Ice draft maps for the Amery Ice Shelf cavity
The data were gridded onto a WGS84 projection with a 2x2 km resolution. Horizontal datum: WGS84 Vertical datum: Mean sea level 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 benea...
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Online Access: | https://researchdata.ands.org.au/bathymetry-ice-draft-shelf-cavity/685650 https://data.aad.gov.au/metadata/records/AIS_GEOM https://data.aad.gov.au/eds/3263/download http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AIS_GEOM |
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ftands:oai:ands.org.au::685650 2023-05-15T13:21:59+02:00 Bathymetry and Ice draft maps for the Amery Ice Shelf cavity AADC (originator) AU/AADC > Australian Antarctic Data Centre, Australia (resourceProvider) Spatial: northlimit=-66; southlimit=-73.6; westlimit=66; eastLimit=79 Temporal: From 1950-01-01 to 2006-04-01 https://researchdata.ands.org.au/bathymetry-ice-draft-shelf-cavity/685650 https://data.aad.gov.au/metadata/records/AIS_GEOM https://data.aad.gov.au/eds/3263/download http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AIS_GEOM unknown Australian Ocean Data Network https://researchdata.ands.org.au/bathymetry-ice-draft-shelf-cavity/685650 994996f9-0dde-4f19-8964-dd673b85c11b https://data.aad.gov.au/metadata/records/AIS_GEOM https://data.aad.gov.au/eds/3263/download http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AIS_GEOM https://data.aad.gov.au oceans ICE DEPTH/THICKNESS EARTH SCIENCE CRYOSPHERE SNOW/ICE BATHYMETRY BATHYMETRY/SEAFLOOR TOPOGRAPHY GROUND ICE FROZEN GROUND Amery Ice Shelf Ice Draft Grounding line TIDE GAUGES GPS > Global Positioning System AIRSAR > Airborne Synthetic Aperture Radar SEISMIC REFLECTION PROFILERS SEISMOGRAPHS Seismometers IFSAR > Interferometric Synthetic Aperture Radar Aircraft SHIPS AMD/AU CEOS ACE/CRC AMD OCEAN > SOUTHERN OCEAN CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR dataset ftands 2020-01-05T21:06:32Z The data were gridded onto a WGS84 projection with a 2x2 km resolution. Horizontal datum: WGS84 Vertical datum: Mean sea level 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. Dataset Amery Ice Shelf Antarc* Antarctica Ice Shelf Ice Shelves Prydz Bay Southern Ocean Research Data Australia (Australian National Data Service - ANDS) Southern Ocean Prydz Bay Amery ENVELOPE(-94.063,-94.063,56.565,56.565) Amery Ice Shelf ENVELOPE(71.000,71.000,-69.750,-69.750) ENVELOPE(66,79,-66,-73.6) |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
oceans ICE DEPTH/THICKNESS EARTH SCIENCE CRYOSPHERE SNOW/ICE BATHYMETRY BATHYMETRY/SEAFLOOR TOPOGRAPHY GROUND ICE FROZEN GROUND Amery Ice Shelf Ice Draft Grounding line TIDE GAUGES GPS > Global Positioning System AIRSAR > Airborne Synthetic Aperture Radar SEISMIC REFLECTION PROFILERS SEISMOGRAPHS Seismometers IFSAR > Interferometric Synthetic Aperture Radar Aircraft SHIPS AMD/AU CEOS ACE/CRC AMD OCEAN > SOUTHERN OCEAN CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR |
spellingShingle |
oceans ICE DEPTH/THICKNESS EARTH SCIENCE CRYOSPHERE SNOW/ICE BATHYMETRY BATHYMETRY/SEAFLOOR TOPOGRAPHY GROUND ICE FROZEN GROUND Amery Ice Shelf Ice Draft Grounding line TIDE GAUGES GPS > Global Positioning System AIRSAR > Airborne Synthetic Aperture Radar SEISMIC REFLECTION PROFILERS SEISMOGRAPHS Seismometers IFSAR > Interferometric Synthetic Aperture Radar Aircraft SHIPS AMD/AU CEOS ACE/CRC AMD OCEAN > SOUTHERN OCEAN CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR Bathymetry and Ice draft maps for the Amery Ice Shelf cavity |
topic_facet |
oceans ICE DEPTH/THICKNESS EARTH SCIENCE CRYOSPHERE SNOW/ICE BATHYMETRY BATHYMETRY/SEAFLOOR TOPOGRAPHY GROUND ICE FROZEN GROUND Amery Ice Shelf Ice Draft Grounding line TIDE GAUGES GPS > Global Positioning System AIRSAR > Airborne Synthetic Aperture Radar SEISMIC REFLECTION PROFILERS SEISMOGRAPHS Seismometers IFSAR > Interferometric Synthetic Aperture Radar Aircraft SHIPS AMD/AU CEOS ACE/CRC AMD OCEAN > SOUTHERN OCEAN CONTINENT > ANTARCTICA GEOGRAPHIC REGION > POLAR |
description |
The data were gridded onto a WGS84 projection with a 2x2 km resolution. Horizontal datum: WGS84 Vertical datum: Mean sea level 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. |
author2 |
AADC (originator) AU/AADC > Australian Antarctic Data Centre, Australia (resourceProvider) |
format |
Dataset |
title |
Bathymetry and Ice draft maps for the Amery Ice Shelf cavity |
title_short |
Bathymetry and Ice draft maps for the Amery Ice Shelf cavity |
title_full |
Bathymetry and Ice draft maps for the Amery Ice Shelf cavity |
title_fullStr |
Bathymetry and Ice draft maps for the Amery Ice Shelf cavity |
title_full_unstemmed |
Bathymetry and Ice draft maps for the Amery Ice Shelf cavity |
title_sort |
bathymetry and ice draft maps for the amery ice shelf cavity |
publisher |
Australian Ocean Data Network |
url |
https://researchdata.ands.org.au/bathymetry-ice-draft-shelf-cavity/685650 https://data.aad.gov.au/metadata/records/AIS_GEOM https://data.aad.gov.au/eds/3263/download http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AIS_GEOM |
op_coverage |
Spatial: northlimit=-66; southlimit=-73.6; westlimit=66; eastLimit=79 Temporal: From 1950-01-01 to 2006-04-01 |
long_lat |
ENVELOPE(-94.063,-94.063,56.565,56.565) ENVELOPE(71.000,71.000,-69.750,-69.750) ENVELOPE(66,79,-66,-73.6) |
geographic |
Southern Ocean Prydz Bay Amery Amery Ice Shelf |
geographic_facet |
Southern Ocean Prydz Bay Amery Amery Ice Shelf |
genre |
Amery Ice Shelf Antarc* Antarctica Ice Shelf Ice Shelves Prydz Bay Southern Ocean |
genre_facet |
Amery Ice Shelf Antarc* Antarctica Ice Shelf Ice Shelves Prydz Bay Southern Ocean |
op_source |
https://data.aad.gov.au |
op_relation |
https://researchdata.ands.org.au/bathymetry-ice-draft-shelf-cavity/685650 994996f9-0dde-4f19-8964-dd673b85c11b https://data.aad.gov.au/metadata/records/AIS_GEOM https://data.aad.gov.au/eds/3263/download http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AIS_GEOM |
_version_ |
1766362660455055360 |