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KPDC, Korea Polar Data Center

Korea Polar Data Center Scientific observations and results from Antarctica shall
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Helicopter-borne and ground-towed radar surveys of the Fourcade Glacier on King George Island, Antarctica

To determine subglacial topography and internal features of the Fourcade Glacier on King George Island in Antarctica, helicopter-borne and ground-towed ground-penetrating radar (GPR) data were recorded along four profiles in November 2006. Signature deconvolution, f-k migration velocity analysis, and finite-difference depth migration applied to the mixed-phase, single-channel, ground-towed data, were effective in increasing vertical resolution, obtaining the velocity function, and yielding clear depth images, respectively. For the helicopter-borne GPR, migration velocities were obtained as root-mean-squared velocities in a two-layer model of air and ice. The radar sections show rugged subglacial topography, englacial sliding surfaces, and localised scattering noise. The maximum depth to the basement is over 79m in the subglacial valley adjacent to the south-eastern slope of the divide ridge between Fourcade and Moczydlowski Glaciers. In the groundtowed profile,weinterpret a complicated conduit above possible basal water and other isolated cavities, which are a few metres wide. Near the terminus, the GPR profiles image sliding surfaces, fractures, and faults that will contribute to the tidewater calving mechanism forming icebergs in Potter Cove.

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Entry ID
DOI
https://dx.doi.org/doi:10.22663/KOPRI-KPDC-00000300.1
Copyright
Science Keyword
ISO Topic
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
Instruments
GPR(Ground Penetrating Radar)
Personnel
  • Joohan Lee (joohan@kopri.re.kr)
Project
Research period
2006-11-01 ~ 2006-11-30
Create/Update Date
2013-02-21 / 2013-02-21
Location
Continent > Antarctica > King George Island
Dataset
Helicopter-borne and ground-towed radar surveys of the Fourcade Glacier on King George Island, Antarctica Formation, evolution and neotectonics of Antarctica Lee,Joohan
Citation
The data(KOPRI-KPDC-00000300) used in this work was provided by the Korea Polar Research Institute.

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