Data

Active Seismics on Sorsdal Glacier 2015-2016

Australian Antarctic Data Centre
COOK, SUE ; PETERS, LEO ; SCHOOF, CHRISTIAN
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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:doi10.4225/15/5aaf269a5135c&rft.title=Active Seismics on Sorsdal Glacier 2015-2016&rft.identifier=10.4225/15/5aaf269a5135c&rft.publisher=Australian Antarctic Data Centre&rft.description=The active seismics are all part of a survey of the Sorsdal Glacier. They are designed to measure ice thickness, and the thickness of the water column underneath the ice shelf where the ice is floating. This was part of an investigation to determine the location of the grounding line on Sorsdal Glacier. Sorsdal Glacier site S04 - 14/12/2015 Timing: 2000 - 2150 Coordinates: S68 42.006, E78 09.439 Team: Sue Cook, James Hamilton, Marty Benavente Weather: Some high cloud, low wind, good visibility Site notes: Crevasses greater than 2 m wide running in along flow direction (parallel to geophone cables). Surface very thin layer of icy/hard packed snow with blue ice underneath. Equipment: Geometrics Geode Seismograph communicating with a laptop via ethernet cable using Geometrics Seismodule Controller Software Version 11.1.69.0 (Geometrics Inc., 2014) Sampling: 4-second records at 4000 samples/second Geophones: 40 Hz Blue/yellow geophones used. Seismic survey layout: 2 x 36 m cables (3 m spacing) Geophones all set into surface by drilling small hole with handheld drill. Bearing of seismic line: 338 degrees (on compass, no magnetic declination applied) Geophones 1-12 to East, 13-24 to West Hammer blows began from East end of line (geophone 1), moving every 6 m towards West end of line. 10 blows at each location. Sources: Geophone,File,Hammer swinger 1, 2.dat, JH 3, 3.dat, JH 5, 4.dat, JH 7, 5.dat, JH 9, 6.dat, JH 11, 7.dat, JH 24, 8.dat, MB 22, 9.dat, MB 20, 10.dat, MB 18, 11.dat, MB 16, 12.dat, MB 14, 13.dat, MB centre, 14.dat, MB&rft.creator=COOK, SUE &rft.creator=PETERS, LEO &rft.creator=SCHOOF, CHRISTIAN &rft.date=2018&rft.coverage=northlimit=-68.7001; southlimit=-68.7001; westlimit=78.1573; eastLimit=78.1573; projection=WGS84&rft.coverage=northlimit=-68.7001; southlimit=-68.7001; westlimit=78.1573; eastLimit=78.1573; 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=AAS_4342_ActiveSeis_2015-2016 when using these data.&rft_subject=geoscientificInformation&rft_subject=ICE DEPTH/THICKNESS&rft_subject=EARTH SCIENCE&rft_subject=CLIMATE INDICATORS&rft_subject=CRYOSPHERIC INDICATORS&rft_subject=GEOPHONES&rft_subject=FIELD SURVEYS&rft_subject=GEOGRAPHIC REGION > POLAR&rft_subject=CONTINENT > ANTARCTICA > Sorsdal Glacier&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=AAS_4342_ActiveSeis_2015-2016 when using these data.

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Brief description

The active seismics are all part of a survey of the Sorsdal Glacier. They are designed to measure ice thickness, and the thickness of the water column underneath the ice shelf where the ice is floating. This was part of an investigation to determine the location of the grounding line on Sorsdal Glacier. Sorsdal Glacier site S04 - 14/12/2015 Timing: 2000 - 2150 Coordinates: S68 42.006, E78 09.439 Team: Sue Cook, James Hamilton, Marty Benavente Weather: Some high cloud, low wind, good visibility Site notes: Crevasses greater than 2 m wide running in along flow direction (parallel to geophone cables). Surface very thin layer of icy/hard packed snow with blue ice underneath. Equipment: Geometrics Geode Seismograph communicating with a laptop via ethernet cable using Geometrics Seismodule Controller Software Version 11.1.69.0 (Geometrics Inc., 2014) Sampling: 4-second records at 4000 samples/second Geophones: 40 Hz Blue/yellow geophones used. Seismic survey layout: 2 x 36 m cables (3 m spacing) Geophones all set into surface by drilling small hole with handheld drill. Bearing of seismic line: 338 degrees (on compass, no magnetic declination applied) Geophones 1-12 to East, 13-24 to West Hammer blows began from East end of line (geophone 1), moving every 6 m towards West end of line. 10 blows at each location. Sources: Geophone,File,Hammer swinger 1, 2.dat, JH 3, 3.dat, JH 5, 4.dat, JH 7, 5.dat, JH 9, 6.dat, JH 11, 7.dat, JH 24, 8.dat, MB 22, 9.dat, MB 20, 10.dat, MB 18, 11.dat, MB 16, 12.dat, MB 14, 13.dat, MB centre, 14.dat, MB

Issued: 2018-03-13

Data time period: 2015-12-14 to 2015-12-14

This dataset is part of a larger collection

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78.1573,-68.7001

78.1573,-68.7001

text: northlimit=-68.7001; southlimit=-68.7001; westlimit=78.1573; eastLimit=78.1573; projection=WGS84

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