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Analysis of East Antarctic drainage basins with altimetric, interferometric, gravity and GPS techniques to determine their state of flux

Australian Antarctic Data Centre
COLEMAN, RICHARD
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=info:doi10.4225/15/57BD38F5C317A&rft.title=Analysis of East Antarctic drainage basins with altimetric, interferometric, gravity and GPS techniques to determine their state of flux&rft.identifier=10.4225/15/57BD38F5C317A&rft.publisher=Australian Antarctic Data Centre&rft.description=Metadata record for data from ASAC Project 2788 See the link below for public details on this project. Public This project will reassess the mass balance of Law Dome and a large sector of the Antarctic ice sheet south of Casey by exploiting the time history of change that can be obtained by resurveying historical surface elevation and gravity networks, started in the 1960s. The changes in position and gravity from these terrestrial traverses act as important constraints and, in some cases, calibration for recent satellite altimeter missions. Such a reassessment and model improvement should see a significant drop in the current uncertainty of the contribution of the Antarctic ice sheet to global sea level rise. 2007-2008 Season: Historical and recent data over Law Dome has been successfully re-reduced and integrated with recent satellite data over a period spanning 1962 to 2005. These data show that the surface elevation of Law Dome decreased from 1962 to about 1971 and then generally increased till 2005 indicating that ice volumes have recently varied over decadal time spans. The variations that are present within our gravity data set are in agreement with the deep core stratigraphy results from the Law Dome summit. Since our data cover the full extent of Law Dome, we are able to state with good confidence that the changes we see are consistent with climate-related signals where increased precipitation is due to increased atmospheric water vapour. This phenomenon has been reported in the Norwegian Arctic. The detection of these localised complex changes, over decadal time scales , highlights problems associated with interpreting relatively short time scale altimetric measurements.&rft.creator=COLEMAN, RICHARD &rft.date=2006&rft.coverage=northlimit=-66.0; southlimit=-67.0; westlimit=110.0; eastLimit=111.0; projection=WGS84&rft.coverage=northlimit=-66.0; southlimit=-67.0; westlimit=110.0; eastLimit=111.0; projection=WGS84&rft_rights=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_2788 when using these data.&rft_subject=imageryBaseMapsEarthCover&rft_subject=ICE SHEETS&rft_subject=EARTH SCIENCE&rft_subject=CRYOSPHERE&rft_subject=GLACIERS/ICE SHEETS&rft_subject=CONTOUR MAPS&rft_subject=LAND SURFACE&rft_subject=TOPOGRAPHY&rft_subject=TERRAIN ELEVATION&rft_subject=GEOMORPHIC LANDFORMS/PROCESSES&rft_subject=GLACIER THICKNESS/ICE SHEET THICKNESS&rft_subject=GPS&rft_subject=drainage basins&rft_subject=GPS > Global Positioning System&rft_subject=GPS RECEIVERS&rft_subject=GPS > Global Positioning System Satellites&rft_subject=CONTINENT > ANTARCTICA&rft_subject=GEOGRAPHIC REGION > ARCTIC&rft_subject=GEOGRAPHIC REGION > POLAR&rft_place=Hobart&rft.type=dataset&rft.language=English Access the data
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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_2788 when using these data.

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Brief description

Metadata record for data from ASAC Project 2788 See the link below for public details on this project. Public This project will reassess the mass balance of Law Dome and a large sector of the Antarctic ice sheet south of Casey by exploiting the time history of change that can be obtained by resurveying historical surface elevation and gravity networks, started in the 1960s. The changes in position and gravity from these terrestrial traverses act as important constraints and, in some cases, calibration for recent satellite altimeter missions. Such a reassessment and model improvement should see a significant drop in the current uncertainty of the contribution of the Antarctic ice sheet to global sea level rise. 2007-2008 Season: Historical and recent data over Law Dome has been successfully re-reduced and integrated with recent satellite data over a period spanning 1962 to 2005. These data show that the surface elevation of Law Dome decreased from 1962 to about 1971 and then generally increased till 2005 indicating that ice volumes have recently varied over decadal time spans. The variations that are present within our gravity data set are in agreement with the deep core stratigraphy results from the Law Dome summit. Since our data cover the full extent of Law Dome, we are able to state with good confidence that the changes we see are consistent with climate-related signals where increased precipitation is due to increased atmospheric water vapour. This phenomenon has been reported in the Norwegian Arctic. The detection of these localised complex changes, over decadal time scales , highlights problems associated with interpreting relatively short time scale altimetric measurements.

Issued: 2006-07-27

Data time period: 2007-10-01 to 2009-03-31

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111,-66 111,-67 110,-67 110,-66 111,-66

110.5,-66.5

text: northlimit=-66.0; southlimit=-67.0; westlimit=110.0; eastLimit=111.0; projection=WGS84

Subjects
CONTINENT > ANTARCTICA | CONTOUR MAPS | CRYOSPHERE | EARTH SCIENCE | GEOGRAPHIC REGION > ARCTIC | GEOGRAPHIC REGION > POLAR | GEOMORPHIC LANDFORMS/PROCESSES | GLACIER THICKNESS/ICE SHEET THICKNESS | GLACIERS/ICE SHEETS | GPS | GPS > Global Positioning System | GPS > Global Positioning System Satellites | GPS RECEIVERS | ICE SHEETS | LAND SURFACE | TERRAIN ELEVATION | TOPOGRAPHY | drainage basins | imageryBaseMapsEarthCover |

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AU-ANL:PEAU : http://nla.gov.au/nla.party-617536

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