By C. Hauck
Many study difficulties in cryospheric technology, comparable to worldwide warming-induced permafrost degradation, require information regarding the subsurface, which are imaged utilizing geophysical equipment. This ebook is a realistic consultant to the applying of geophysical options in mountainous and polar terrain, the place the tough surroundings and nature of the subsurface pose specific demanding situations. It starts off with an advent to the most geophysical tools after which demonstrates their software in periglacial environments via quite a few case reports - written by means of a group of overseas specialists. the ultimate a part of the publication provides a sequence of reference tables with regular values of geophysical parameters for periglacial environments. This guide is a beneficial source for glaciologists, geomorphologists and geologists requiring an creation to geophysical ideas, in addition to for geophysicists missing adventure of making plans and undertaking box surveys in chilly areas.
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Extra resources for Applied geophysics in periglacial environments
2001, Beylich et al. 2003, Bucki et al. 2004, Maurer and Hauck 2007), but have been increasing in recent years. Electromagnetic techniques include frequency-domain EM systems (FEM), time-domain electromagnetic systems (TDEM), systems using very low frequencies (VLF) and the so-called radiomagnetotelluric method (RMT). Similar to the electrical methods (see Chapter 1) the physical parameter allowing a differentiation between ice and water or frozen and unfrozen substratum is the electrical resistivity (in ohm metres, X m) or more commonly its reciprocal, the electrical conductivity (in siemens/metre or usually millisiemens/ metre, mS/m).
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Kneisel, C. (1999). Permafrost in Gletschervorfeldern – Eine vergleichende Untersuchung in den Ostschweizer Alpen und Nordschweden. Trierer Geographische Studien, 22, 156pp. 26 C. Kneisel and C. Hauck Kneisel, C. (2003). Electrical resistivity tomography as a tool for geomorphological investigations – some case studies. Zeitschrift fu¨r Geomorphologie, Supplement, 132, 37–49. Kneisel, C. (2004). New insights into mountain permafrost occurrence and characteristics in glacier forefields at high altitude through the application of 2D resistivity imaging.
Applied geophysics in periglacial environments by C. Hauck