Data

Helicopter-borne ground penetrating radar measurements on the Sørsdal Glacier 2017-2018

Australian Antarctic Division
Thompson, S. and Schoof, C. ; THOMPSON, SARAH ; SCHOOF, CHRISTIAN
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=info:doi10.26179/5e7adfa5a8859&rft.title=Helicopter-borne ground penetrating radar measurements on the Sørsdal Glacier 2017-2018&rft.identifier=10.26179/5e7adfa5a8859&rft.publisher=Australian Antarctic Data Centre&rft.description=Ground penetrating radar (GPR) is an active geophysical technique that uses high frequency radio waves to map the subsurface. The basic principle of GPR measurements is the transition of electromagnetic pulses of suitable frequency down into the ground through a transmitting antenna, and to detect the reflected energy as a function of time, amplitude and phase from any subsurface targets through a receiver antenna. If the electromagnetic travel velocity of the subsurface is known, time can be converted to depth. Wave reflections are generated from the boundaries of materials of different electromagnetic properties. The large contrast between the electromagnetic properties of rock, ice, water, and some sediments makes GPR a particularly effective method for mapping in frozen environments.A Malå ProEx radar system with a shielded antenna, centre frequency 100 MHz, connected to a handheld Garmin GPS. The antenna was housed in wooden box, slung on a longline, 15 metres long, from the helicopter cargo hook. Two surveys were carried out on the Sørsdal Glacier with the aim of mapping englacial meltwater channels. Outer survey bounds-68.66, 78.302-68.65, 78.532-68.72, 78.544-68.73, 78.313Survey 1 - 21/12/2017 - 11 parallel survey lines 8 km long and 2 cross profiles 3.2 km longSurvey 2 - 22/01/2018 - 12 survey lines 1.3 km longProgress Code: completedStatement: The data quality is very good.&rft.creator=Thompson, S. and Schoof, C. &rft.creator=THOMPSON, SARAH &rft.creator=SCHOOF, CHRISTIAN &rft.date=2020&rft.coverage=westlimit=78.22266; southlimit=-69.00568; eastlimit=79; northlimit=-68.7324&rft.coverage=westlimit=78.22266; southlimit=-69.00568; eastlimit=79; northlimit=-68.7324&rft_rights=These data are not yet publicly available.&rft_rights=Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/legalcode&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_HeloGPR_2017-2018 when using these data.&rft_rights=This metadata record is publicly available.&rft_subject=climatologyMeteorologyAtmosphere&rft_subject=inlandWaters&rft_subject=EARTH SCIENCE > CRYOSPHERE > GLACIERS/ICE SHEETS > GLACIERS&rft_subject=EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > ICE GROWTH/MELT&rft_subject=MELTWATER CHANNEL&rft_subject=GLACIER HYDROLOGY&rft_subject=MALÅ PROEX RADAR&rft_subject=MALÅ 100 MHZ SHIELDED ANTENNA&rft_subject=4342&rft_subject=AAS 4342&rft_subject=MÅLA 100 MHZ SHIELDED ANTENNA&rft_subject=MÅLA PROEX RADAR&rft_subject=GPR > Ground Penetrating Radar&rft_subject=HELICOPTER&rft_subject=AMD&rft_subject=CEOS&rft_subject=AMD/AU&rft_subject=GEOGRAPHIC REGION > POLAR&rft_subject=CONTINENT > ANTARCTICA > SØRSDAL GLACIER&rft_subject=CONTINENT > ANTARCTICA > PRINCESS ELIZABETH LAND&rft_subject=CONTINENT > ANTARCTICA > DAVIS STATION&rft.type=dataset&rft.language=English Access the data
Cite Saved to MyRDA Save to MyRDA

Licence & Rights:

Open Licence view details
CC-BY

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

These data are not yet publicly available.

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_HeloGPR_2017-2018 when using these data.

This metadata record is publicly available.

Access:

Other

Full description

Ground penetrating radar (GPR) is an active geophysical technique that uses high frequency radio waves to map the subsurface. The basic principle of GPR measurements is the transition of electromagnetic pulses of suitable frequency down into the ground through a transmitting antenna, and to detect the reflected energy as a function of time, amplitude and phase from any subsurface targets through a receiver antenna. If the electromagnetic travel velocity of the subsurface is known, time can be converted to depth. Wave reflections are generated from the boundaries of materials of different electromagnetic properties. The large contrast between the electromagnetic properties of rock, ice, water, and some sediments makes GPR a particularly effective method for mapping in frozen environments.

A Malå ProEx radar system with a shielded antenna, centre frequency 100 MHz, connected to a handheld Garmin GPS. The antenna was housed in wooden box, slung on a longline, 15 metres long, from the helicopter cargo hook. Two surveys were carried out on the Sørsdal Glacier with the aim of mapping englacial meltwater channels.

Outer survey bounds
-68.66, 78.302
-68.65, 78.532
-68.72, 78.544
-68.73, 78.313

Survey 1 - 21/12/2017 - 11 parallel survey lines 8 km long and 2 cross profiles 3.2 km long
Survey 2 - 22/01/2018 - 12 survey lines 1.3 km long

Lineage

Progress Code: completed
Statement: The data quality is very good.

Notes

Purpose
The purpose of the data is, in combination with other geophysical data sets collected at the same time, to detect and map englacial meltwater pathways within the ice.

Data time period: 2017-12-21 to 2018-01-22

This dataset is part of a larger collection

Click to explore relationships graph
Help

Related People

79,-68.7324 79,-69.00568 78.22266,-69.00568 78.22266,-68.7324 79,-68.7324

78.61133,-68.86904

text: westlimit=78.22266; southlimit=-69.00568; eastlimit=79; northlimit=-68.7324

Subjects
4342 | AAS 4342 | AMD | AMD/AU | CEOS | CONTINENT > ANTARCTICA > DAVIS STATION | CONTINENT > ANTARCTICA > PRINCESS ELIZABETH LAND | CONTINENT > ANTARCTICA > SØRSDAL GLACIER | EARTH SCIENCE > CRYOSPHERE > GLACIERS/ICE SHEETS > GLACIERS | EARTH SCIENCE > CRYOSPHERE > SNOW/ICE > ICE GROWTH/MELT | GEOGRAPHIC REGION > POLAR | GLACIER HYDROLOGY | GPR > Ground Penetrating Radar | HELICOPTER | MALÅ 100 MHZ SHIELDED ANTENNA | MALÅ PROEX RADAR | MELTWATER CHANNEL | MÅLA 100 MHZ SHIELDED ANTENNA | MÅLA PROEX RADAR | climatologyMeteorologyAtmosphere | inlandWaters |

User Contributed Tags    

Login to tag this record with meaningful keywords to make it easier to discover

Other Information
Download the dataset. (GET DATA > DIRECT DOWNLOAD)

url : https://data.aad.gov.au/eds/5100/download

Public information for AAS project AAS_4342 (PROJECT HOME PAGE)

url : https://projects.aad.gov.au/report_project_public.cfm?project_no=AAS_4342

Citation reference for this metadata record and dataset. (VIEW RELATED INFORMATION)

url : https://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_4342_HeloGPR_2017-2018

Identifiers
ACN 633 798 857