Ground penetrating radar sounding on an active rock glacier on James Ross Island, Antarctic Peninsula region: Polish Polar Research, v

• Main Authors: Kotaro Fukui, Toshio Sone, Jorge Strelin, Cesar Torielli, Convenio Dirección, Nacional Antártico
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Published: 2007
• Subjects: Key words; Antarctic Peninsula; James Ross Island; rock glacier; ground penetrating; Antarctic; Ross Island; Antarc*; ice core; Polish Polar Research
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.625.8894; http://www.polar.pan.pl/ppr28/PPR28-013.pdf

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.