Fracturing and deformation along the Amery Ice Shelf

Metadata record for data from ASAC Project 2581

See the link below for public details on this project.


The break-up of Antarctic ice shelves has highlighted the need for a better understanding of the dominant fracture processes occurring within the ice shelves and whether there is any link to climate variability. Using a combination of in-situ (GPS, seismic) and satellite (optical and radar imagery, synthetic aperture radar (SAR)) measurements and airborne ice radar measurements, we will quantify the deformation and fracture processes in different regions on the Amery Ice Shelf, leading to improved fracture mechanics models.


GPS measurements were taken across large crevasses in the shear margins on the eastern side of the Amery Ice Shelf, north of Gillock Is. These measurements will give us an opportunity to measure the three dimensional deformation across active fracture zones, leading to a better understanding of fracture processes on ice shelves.


Three GPS networks, each network consisting of 4 GPS units in a quadrilateral shape, were measured over the period 17-28 Jan, 2007. These data will be processed during 2007 to compute the deformation and strain across and within the crevassed areas.

Simple

Identification info

Alternate title
Fracturing and deformation along the Amery Ice Shelf
Date (Publication)
2012-04-04
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:10.4225/15/574BC598BD783

Originator

Coleman, C.

Publisher

Australian Antarctic Data Centre

Principal investigator

COLEMAN, RICHARD
Institute of Marine and Antarctic Studies
University of Tasmania
Private Bag 76
Hobart
Tasmania
7001
Australia

Collaborator

COLEMAN, RICHARD
Institute of Marine and Antarctic Studies
University of Tasmania
Private Bag 76
Hobart
Tasmania
7001
Australia
Name
CAASM Metadata
Website
https://data.aad.gov.au/metadata/records/ASAC_2581

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
Topic category
  • Geoscientific information
  • Inland waters
  • Oceans

Extent

N
S
E
W


Extent

Description
Temporal Coverage

Temporal extent

TimePeriod
2007-01-17 2007-01-28
Title
A 4-decade record of elevation change of the Amery Ice Shelf, East Antarctica.
Date (Publication)
2009
Citation identifier
114

Citation identifier
doi:10.1029/2008JF001094

Author

King, M.A., R. Coleman, A. Freemantle, H.A. Fricker, R.S. Hurd, B. Legresy, L. Padman and R. Warner
Name
Journal of Geophysical Research
Issue identification
F01010
NASA/GCMD Earth Science Keywords
  • EARTH SCIENCE > CRYOSPHERE > GLACIERS/ICE SHEETS > ICE SHEETS
Keywords
  • GPS
  • Amery Ice Shelf
NASA/GCMD Earth Science Keywords
  • AMD/AU
  • CEOS
  • AMD
NASA/GCMD Earth Science Keywords
  • CONTINENT > ANTARCTICA > Amery Ice Shelf
  • 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=ASAC_2581 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
2012-04-04T00:00:00
Units of distribution
MB
Transfer size
6.8
Distribution format
  • Excel, .llh, text

OnLine resource
GET DATA

Download point for the data

OnLine resource
PROJECT HOME PAGE

Public information for ASAC project 2581

OnLine resource
VIEW RELATED INFORMATION

Citation reference for this metadata record and dataset

Resource lineage

Statement
# GPS surface elevation profiles for the Amery Ice Shelf for various campaigns # 1995, 1999, 2000, 2003, 2005/6 # # The raw GPS data were collected under Australian Antarctic Science Advisory Committee (ASAC) funding # to PI Richard Coleman. # The data processing was as described in the paper below. Briefly, these are # 1995: in Leica Ski software, relative to on ice base station, with # coordinates determined relative to rock site at Beaver Lake # subsequent: in Track (GAMIT/GLOBK) relative to base station with coordinates # determined using GIPSY precise point positioning # Coordinate files are in a format to allow easy crossover computations using the GMT supplementary routine # x2sys_crossover using the geoz.def definition provided # e.g., for GPS/GPS crossovers it would be # x2sys_cross file1 file2 -TGEOZ -A0.2 -Ndk -Qe -Ia -V -2 -Ce -Wn6 # col1: time in days since 00:00 Jan 1, 2000. non-integer part of the day may just be a count by epoch rather than actual time. # col2: lon (WGS84 deg) # col3: lat (WGS84 deg) # col4: height (WGS84 ellipsoidal elevation, after removal of ocean tides, ocean tide loading displacement, inverse barometer effect and permanent body tide). See note 1. # Note 1: Corrections applied: # 1. tides (TPXO6.2) # 2. tidal loading displacement (TPXO6.2) # 3. inverse barometer effect (IB corrections are relative to mean pressure (981.2hPa) at the Amery G3 AWS in 1999-2003). # 4. permanent body tide was removed for compatibility to ICESat products (note that ICESat Release 428 products, not included here, are not conventionally on WGS84 ellipsoid so this correction may need to be applied to external datasets for compatibility). This was done by block shifting the GPS time series by -0.10 m # Full details are provided in the paper below. # in using these data please cite King, M.A., R. Coleman, A. Freemantle, H.A. Fricker, R.S. Hurd, B. Legresy, L. Padman and R. Warner 2009. A 4-decade record of elevation change of the Amery Ice Shelf, East Antarctica. Journal of Geophysical Research, 114: F01010, doi:10.1029/2008JF001094. # Matt King, Dec 2012
Hierarchy level
Dataset
Maintenance and update frequency
As needed
Maintenance note
2012-04-04 - record updated by Dave Connell after data were recovered by Henk Brolsma. 2016-05-13 - record updated by Dave Connell - basic updates.

Metadata

Metadata identifier
string/ASAC_2581

Language
English
Character encoding
UTF8

Author

COLEMAN, RICHARD
Institute of Marine and Antarctic Studies
University of Tasmania
Private Bag 76
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
e9f44bd9-e08e-4c14-b33c-7f79d516d782

Alternative metadata reference

Title
gov.nasa.gsfc.gcmd
Date (Last Revision)
2015-11-29T18:39:54

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/ASAC_2581

Point of truth for the metadata record

Date info (Creation)
2005-03-02T00:00:00
Date info (Last Update)
2017-04-26

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


Provided by

Share on social sites

Access to the record in catalogue

Associated resources

Not available