Download Applied geophysics in periglacial environments by C. Hauck PDF

By C. Hauck

Many examine difficulties in cryospheric technology, similar to international warming-induced permafrost degradation, require information regarding the subsurface, which might be imaged utilizing geophysical equipment. This publication is a realistic advisor to the applying of geophysical suggestions in mountainous and polar terrain, the place the cruel setting and nature of the subsurface pose specific demanding situations. It begins with an advent to the most geophysical equipment after which demonstrates their program in periglacial environments via a variety of case experiences - written through a workforce of overseas specialists. the ultimate a part of the ebook offers a chain of reference tables with average values of geophysical parameters for periglacial environments. This guide is a worthwhile source for glaciologists, geomorphologists and geologists requiring an advent to geophysical concepts, in addition to for geophysicists missing adventure of making plans and accomplishing box surveys in chilly areas.

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Kneisel and C. Hauck The results show that resistivity values and even resistivity contrasts between anomalies and background material depend strongly on the k-value used during inversion. Joint interpretations of tomograms computed with different k-values are often required to obtain meaningful interpretations (Hauck et al. 2003). However, anomalies that are discernible in tomograms computed with different parameter settings may be interpreted as true features. Convergence criterion In RES2DINV the iteration process is terminated when a predefined maximum iteration number is reached or the change in the RMS error from one iteration to the next is lower than a predefined limit (Loke and Barker 1996).

Acworth, I. and Dahlin, T. (2003). A comparison of smooth and blocky inversion methods in 2D electrical imaging surveys. Exploration Geophysics, 34, 182–187. , Loke, M. , Lambiel, C. and Reynard, E. (2003). Assessing reliability of 2D resistivity imaging in permafrost and rock glacier studies using the depth of investigation index method. Near Surface Geophysics, 1(2), 57–67. Maurer, H. and Hauck, C. (2007). Geophysical imaging of alpine rock glaciers. Journal of Glaciology, 53(180), 110–120.

Society of Exploration Geophysics, Tulsa, pp. 355–384. Slater, L. and Lesmes, D. (2002). IP interpretation in environmental investigations. Geophysics, 67(1), 77–88. Telford, W. , Geldart, L. P. and Sheriff, R. E. (1990). Applied Geophysics. Cambridge University Press. Tong, L. and Yang, C. (1990). Incorporation of topography into two-dimensional resistivity inversion. Geophysics, 55, 354–361. , Hauck, C. and Lehmann, F. (2000). Verification of geophysical models in Alpine permafrost using borehole information.

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