期刊
RUSSIAN GEOLOGY AND GEOPHYSICS
卷 60, 期 7, 页码 793-800出版社
RUSSIAN ACAD SCIENCES, SIBERIAN BRANCH, VS SOBOLEV INST GEOL & MINEROL
DOI: 10.15372/RGG2019059
关键词
GPR; dynamic parameters; attenuation; volumetric water content
资金
- Russian Foundation for Basic Research [18-05-60004]
- Russian Science Foundation [16-17-00102]
- Russian Science Foundation [16-17-00102] Funding Source: Russian Science Foundation
Ground-penetrating radar (GPR) profiling is applicable to study peatlands and swampy areas in permafrost but have some limitations in summer time. Theoretical calculations and field experiments show that estimating attenuation of electromagnetic waves is required for planning GPR survey. GPR data acquired with a 300 MHz antenna fail to resolve reflections from below the permafrost if the thaw/permafrost boundary is deeper than 1.5 m and the attenuation coefficient is 0.7, as in water-saturated peat. GPR data allow high-resolution lithological division of permafrost and provide reliable constraints on the depths to interfaces and physical properties of the ground. Thus, GPR can fully or partly substitute for the time- and labor-consuming direct measurements. The inferences have been confirmed by field results.
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