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The Application of Ground Penetrating Radar (Gpr) at the Interpretation of Engineering Survey Data of the Past Years: Massive Ice Beds or Ice Wedges?
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, Engineering and Mining Geophysics 2019 15th Conference and Exhibition, Apr 2019, Volume 2019, p.1 - 10
Abstract
The report discusses techniques and methods for assessing the reliability of the results of engineering surveys in the cryolithozone in 1950–1980s. It is noteworthy that for the studies of the past years in Chukotka region, the model of interlaid massive ice beds hosted by marine and glacial-marine sediments was decisive in profiling the upper layers of permafrost. Widespread continental deposits and ice wedges distribution were ignored in the region. The example of the modern facility construction demonstrates the feasibility of paleogeography analysis and GPR methods application in determining the conditions of formation and bedding of ground ice bodies. According to the results of GPR profiling with frequencies of 90 and 400 MHz, geological and geophysical sections and a plan with polygons of buried wedge ice were compiled. The results of the radargram interpretation are confirmed by well drilling.