Title Geophysical identification of permafrost in Livingston Island, maritime Antarctica
Author Hauck, C.; Vieira, G.; Gruber, S.; Blanco, J.; Ramos, M.
Author Affil Hauck, C., University of Zurich, Geographical Institute, Glaciology and Geomorphodynamics Group, Zurich, Switzerland. Other: University of Lisbon, Portugal; University of Alcalá, Spain
Source Permafrost and seasonally frozen ground under a changing climate, edited by T. Zhang, F.E. Nelson and S. Gruber. Journal of Geophysical Research, 112( F2), F02S19. Publisher: American Geophysical Union, Washington, DC, United States. ISSN: 0148- 0227
Publication Date Jun. 24, 2007
Notes In English. 33 refs. Ant. Acc. No: 83659. CRREL Acc. No: 62003130
Index Terms bedrock; climatic change; elastic waves; frozen ground; geophysical surveys; measurement; permafrost; electrical resistivity; seismic surveys; surveys; Antarctica--Livingston Island; Antarctica; body waves; climate change; field studies; geophysical methods; ice cores; International Polar Year 2007-08; IPY 2007-08 Research Publications; Livingston Island; moraines; P- waves; refraction methods; resistivity; Scotia Sea Islands; seismic methods; seismic waves; South Shetland Islands; tomography
Abstract The current permafrost distribution on Livingston Island, South Shetland Islands, maritime Antarctic, was investigated using electrical resistivity tomography, refraction seismics, and shallow borehole temperatures. The field sites include different geological and geomorphological settings, including ice cored moraines and bedrock sites with debris covers of different thickness. Two- dimensional geophysical inversion schemes were used to analyze spatial heterogeneity at field sites and to detect isolated occurrences of ground ice. Results confirm that permafrost is widespread on Livingston Island, with high ice content in ice cored moraines and little in the cracks and fissures of frozen bedrock. (mod. journ. abst.)
URL http://hdl.handle.net/10.1029/2006JF000544
Publication Type journal article
Record ID 282811