Bathymetry and Ice draft maps for the Amery Ice Shelf cavity

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.

Simple

Identification info

Alternate title
Bathymetry and Ice draft maps for the Amery Ice Shelf cavity
Date (Publication)
2012-05-04
Edition
1
Citation identifier
Dataset DOI

Title
Information and documentation - Digital object identifier system
Date (Publication)
2012-04-23
Citation identifier
ISO 26324:2012

Citation identifier
doi:10.26179/5c8f2263724e4

Originator

Galton-Fenzi, B.K., Coleman, R. and Maraldi, C.

Publisher

Australian Antarctic Data Centre

Principal investigator

GALTON-FENZI, BEN K
ACE CRC
Private bag 80
Hobart
Tasmania
7001
Australia

Collaborator

GALTON-FENZI, BEN K
ACE CRC
Private bag 80
Hobart
Tasmania
7001
Australia

Collaborator

COLEMAN, RICHARD
Centre for Spatial Information Science
School of Geography and Environmental Studies
University of Tasmania
Private Bag 76
Hobart
Tasmania
7001
Australia

Collaborator

MARALDI, CLAIRE
Name
CAASM Metadata
Website
https://data.aad.gov.au/metadata/records/AIS_GEOM

Status
Completed

Custodian

AU/AADC > Australian Antarctic Data Centre, Australia - AADC, DATA OFFICER (DATA CENTER CONTACT)
Australian Antarctic Division
203 Channel Highway
Kingston
Tasmania
7050
Australia

Spatial resolution

Vertical sampling distance
50
Topic category
  • Oceans

Extent

N
S
E
W


Extent

Description
Temporal Coverage

Temporal extent

TimePeriod
1950-01-01 2006-04-01

Extent

Description
Vertical Extent - Depth

Vertical element

Minimum value
0
Maximum value
3500
Identifier
urn:x-ogc:def:cs:EPSG:6498
Name
Vertical CS. Axis: depth (D). Orientation: down. UoM: m.
Identifier
urn:x-ogc:def:axis:EPSG:113
Name
depth
Title
The Geometry of the cavity beneath the Amery Ice Shelf, East Antarctica
Date (Publication)
2007

Author

Galton-Fenzi, B. K., C. Maraldi, R. Coleman and J. Hunter
Name
Geophys. Res. Lett.
Title
Barotropic Tides of the Southern Indian Ocean and the Amery Ice Shelf Cavity
Date (Publication)
2007
Citation identifier
10.1029/2007GL030900

Author

Maraldi, C., B. Galton-Fenzi, F. Lyard, and L. Testut
Name
Geophys. Res. Lett.
NASA/GCMD Earth Science Keywords
  • EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > ICE DEPTH/THICKNESS
  • EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > BATHYMETRY
  • EARTH SCIENCE > CRYOSPHERE > FROZEN GROUND > GROUND ICE
Keywords
  • Amery Ice Shelf
  • Ice Draft
  • Grounding line
NASA/GCMD Earth Science Keywords
  • TIDE GAUGES
  • GPS > Global Positioning System
  • AIRSAR > Airborne Synthetic Aperture Radar
  • SEISMIC REFLECTION PROFILERS
  • SEISMOGRAPHS
  • Seismometers
  • IFSAR > Interferometric Synthetic Aperture Radar
NASA/GCMD Earth Science Keywords
  • Aircraft
  • SHIPS
NASA/GCMD Earth Science Keywords
  • AMD/AU
  • CEOS
  • ACE/CRC
  • AMD
NASA/GCMD Earth Science Keywords
  • OCEAN > SOUTHERN OCEAN
  • CONTINENT > ANTARCTICA
  • GEOGRAPHIC REGION > POLAR

Resource constraints

Use limitation
This metadata record is publicly available.

Resource constraints

Access constraints
licence
Other constraints
These data are publicly available for download from the provided URL.

Resource constraints

File type
Portable Network Graphic
Linkage
Creative Commons by Attribution logo

Title
Attribution 4.0 International (CC BY 4.0)
Website
https://creativecommons.org/licenses/by/4.0/legalcode

Legal code for Creative Commons by Attribution 4.0 International license

Use constraints
licence
Other constraints
This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AIS_GEOM when using these data.
Language
English
Character encoding
UTF8

Distribution Information

Distributor

Distributor

AU/AADC > Australian Antarctic Data Centre, Australia - AADC, DATA OFFICER (DATA CENTER CONTACT)
Australian Antarctic Division
203 Channel Highway
Kingston
Tasmania
7050
Australia

Distributor

Fees
free
Planned available datetime
2012-05-04T00:00:00
Units of distribution
MB
Transfer size
4.7
Distribution format
  • text, pdf

OnLine resource
GET DATA

Download point for the data - text files

OnLine resource
VIEW RELATED INFORMATION

Citation reference for this metadata record and dataset

Resource lineage

Statement
The data were gridded onto a WGS84 projection with a 2x2 km resolution. Horizontal datum: WGS84 Vertical datum: Mean sea level
Hierarchy level
Dataset
Maintenance and update frequency
As needed
Maintenance note
2012-05-04 - record updated by Dave Connell after new data were submitted by Ben Galton-Fenzi. 2014-11-28 - record updated by Dave Connell - basic updates. 2019-03-18 - record updated by Dave Connell for ISO compliance.

Metadata

Metadata identifier
string/AIS_GEOM

Language
English
Character encoding
UTF8

Author

GALTON-FENZI, BEN K
ACE CRC
Private bag 80
Hobart
Tasmania
7001
Australia

Sponsor

Australian Antarctic Division

Owner

AADC

Type of resource

Resource scope
Dataset

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Citation identifier
994996f9-0dde-4f19-8964-dd673b85c11b

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Date (Last Revision)
2019-03-18T15:43:55

Identifier

Description
metadata.extraction_date

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Citation identifier
8.6

Metadata linkage
http://data.aad.gov.au/metadata/records/AIS_GEOM

Point of truth for the metadata record

Date info (Creation)
2007-08-23T00:00:00
Date info (Last Update)
2019-03-18

Metadata standard

Title
ISO 19115-3
Edition
2014
Other citation details
Version 1
Title
DIF to ISO 19115-1 Profile
 
 

Overviews

Spatial extent

N
S
E
W


Keywords


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