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Russian Geology and Geophysics

2010 year, number 1

SEISMIC STUDIES OF FROZEN GROUND IN ARCTIC AREAS

V.P. Melnikova, A.G. Skvortsova, G.V. Malkovaa, D.S. Drozdova, O.E. Ponomarevaa, M.R. Sadurtdinova, A.M. Tsareva, and V.A. Dubrovinb
a Institute of the Earths Cryosphere, Siberian Branch of the Russian Academy of Sciences, POB 1230, Tyumen, 625000, Russia
b All-Russian Research Institute of Hydrogeology and Engineering Geology, Zeleny Village, Moscow Region, 142452, Russia
Keywords: Frozen ground, Arctic shelf, seismic surveys
Pages: 136-142

Abstract

Seismic surveys have been applied to investigate the structure of frozen ground, identify and contour natural and man-caused unfrozen layers in permafrost (taliks), constrain the position of the permafrost table in the Arctic inner shelf, and study the related coastal stability. They are the classic methods common in shallow seismic exploration and new techniques specially designed at the Institute of Earths Cryosphere (Tyumen) for different wave components. The joint use of compressional and shear waves provides a higher-quality interpretation of seismic data in permafrost applications. In the case of a single wave component, shear waves are advantageous over P waves.