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Ground penetrating radar for soil-water measurement in a semi-arid climate in the Orkhon River basin, central Mongolia.
- Source :
-
Exploration Geophysics . Mar2022, Vol. 53 Issue 2, p229-236. 8p. - Publication Year :
- 2022
-
Abstract
- In this paper, we present a velocity analysis technique using ground-penetrating radar (GPR) data to estimate near-surface soil-water content affected by topography and solar radiation on a mountain peak, mountain mid-slope, and alluvial plain sites in a semi-arid climate area in central Asia. By making precise measurements of reflected EM wave velocity, the water content in the near-surface soil was determined. The GPR experiments at several frequencies were carried out in two sequential phases (comprising common-offset and multi-offset methods) to obtain the soil-water content and illustrate the subsurface structure. We then tried to determine the relationship between near-surface moisture content and permafrost thawing. Therefore, we used several different methods including time-domain reflectometry and a resistivity survey. We also confirmed via the GPR data that vegetation cover indicates soil-water content in the near-surface soil. The results evaluated in this study provide meaningful information about soil water as well as subsurface structures. The GPR data acquired at the survey sites indicated a large range of near-surface water content due to the topography of the survey lines. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 08123985
- Volume :
- 53
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Exploration Geophysics
- Publication Type :
- Academic Journal
- Accession number :
- 155516210
- Full Text :
- https://doi.org/10.1080/08123985.2021.1920833