Bathymetry and Ice draft maps for the Amery Ice Shelf cavity
Progress Code: completed Statement: 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...
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Online Access: | https://researchdata.edu.au/bathymetry-ice-draft-shelf-cavity/2821863 |
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ftands:oai:ands.org.au::2821863 2024-09-15T17:38:40+00:00 Bathymetry and Ice draft maps for the Amery Ice Shelf cavity AADC (owner) AADC, DATA OFFICER (distributor) AADC, DATA OFFICER (custodian) AU/AADC > Australian Antarctic Data Centre, Australia (hasAssociationWith) Australian Antarctic Data Centre (publisher) Australian Antarctic Division (sponsor) GALTON-FENZI, BEN K (collaborator) GALTON-FENZI, BEN K (hasPrincipalInvestigator) GALTON-FENZI, BEN K (author) Spatial: westlimit=66; southlimit=-73.6; eastlimit=79; northlimit=-66 Spatial: uplimit=3500; downlimit=0 Temporal: From 1950-01-01 to 2006-04-01 https://researchdata.edu.au/bathymetry-ice-draft-shelf-cavity/2821863 unknown Australian Ocean Data Network https://researchdata.edu.au/bathymetry-ice-draft-shelf-cavity/2821863 AIS_GEOM AU/AADC > Australian Antarctic Data Centre, Australia oceans EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > ICE DEPTH/THICKNESS OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > BATHYMETRY FROZEN GROUND > GROUND ICE 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 2024-08-06T01:58:58Z Progress Code: completed Statement: 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) |
institution |
Open Polar |
collection |
Research Data Australia (Australian National Data Service - ANDS) |
op_collection_id |
ftands |
language |
unknown |
topic |
oceans EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > ICE DEPTH/THICKNESS OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > BATHYMETRY FROZEN GROUND > GROUND ICE 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 EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > ICE DEPTH/THICKNESS OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > BATHYMETRY FROZEN GROUND > GROUND ICE 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 EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > ICE DEPTH/THICKNESS OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > BATHYMETRY FROZEN GROUND > GROUND ICE 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 |
Progress Code: completed Statement: 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 (owner) AADC, DATA OFFICER (distributor) AADC, DATA OFFICER (custodian) AU/AADC > Australian Antarctic Data Centre, Australia (hasAssociationWith) Australian Antarctic Data Centre (publisher) Australian Antarctic Division (sponsor) GALTON-FENZI, BEN K (collaborator) GALTON-FENZI, BEN K (hasPrincipalInvestigator) GALTON-FENZI, BEN K (author) |
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.edu.au/bathymetry-ice-draft-shelf-cavity/2821863 |
op_coverage |
Spatial: westlimit=66; southlimit=-73.6; eastlimit=79; northlimit=-66 Spatial: uplimit=3500; downlimit=0 Temporal: From 1950-01-01 to 2006-04-01 |
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 |
AU/AADC > Australian Antarctic Data Centre, Australia |
op_relation |
https://researchdata.edu.au/bathymetry-ice-draft-shelf-cavity/2821863 AIS_GEOM |
_version_ |
1810474735220293632 |