Ground penetrating radar sounding on an active rock glacier on James Ross Island, Antarctic Peninsula region: Polish Polar Research, v
Abstract: This study used ground penetrating radar soundings to examine a tongue−shaped rock glacier (6404’S 5825’W) on James Ross Island, Antarctic Peninsula, in January 2005. The rock glacier studied has multiple well−developed transverse ridges and approximately 800 m long from the talus of its h...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Text |
| Language: | English |
| Published: |
2007
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| Subjects: | |
| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.625.8894 http://www.polar.pan.pl/ppr28/PPR28-013.pdf |
| Summary: | Abstract: This study used ground penetrating radar soundings to examine a tongue−shaped rock glacier (6404’S 5825’W) on James Ross Island, Antarctic Peninsula, in January 2005. The rock glacier studied has multiple well−developed transverse ridges and approximately 800 m long from the talus of its head to its frontal slopes and is 300 m wide in the middle. The longitudinal ground penetrating radar profile identified debris bands which dip up−glacier, similar to the thrust structures in the compression zone of a valley glacier. Transverse ground penetrating radar profiles indicated a layered structure which is inclined towards the central part of the rock glacier and which resembles the transverse foliation of a valley glacier. Conse− quently, the internal structure of the rock glacier is revealed as being similar to the “nested spoons ” common in the interior of valley glaciers. We concluded that this rock glacier has been created by the deformation of a glacier ice core and a thick and continuous debris mantle. |
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