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Study on Near-Surface Water Content Measurement by Ground-Penetrating Radar

DONG Hang1,2, LIU Si-xin1,WANG Chun-hui3, ZENG Zhao-fa1, LU Qi1, WANG Zhe-jiang1, YI Bing1   

  1. 1.College of GeoExploration Science and Technology, Jilin University, Changchun 130026, China;2.Northeast Institute of Geography and Agroecology, CAS, Changchun 130012, China;3.The Institute of Hydrogeology and Engineering Technique, CGS, Baoding,Hebei 071000,China
  • Received:2008-05-09 Revised:1900-01-01 Online:2009-01-26 Published:2009-01-26
  • Contact: LIU Si-xin

Abstract: For the sake of verifying adequately the feasibility of GPR method in the use of measuring near surface water content, based on GPR reflected wave method, according to the relations of dielectric constant, electromagnetic wave velocity and volumetric water content, the corresponding theory and characteristic of GPR reflected wave method was analyzed in detail. A velocity analysis algorithm that applied to high frequency radar signal was introduced, and a local aquifer model was established. The Finite-Difference Time-Domain (FDTD) method was used to model the GPR response of the local aquifer under different measurement acquisitions. On the combination of the velocity analysis theory and the Topp formula, the water content were obtained by inverse modeling.

Key words: ground-penetrating radar, local aquifer, velocity analysis, forward modeling, radar

CLC Number: 

  • P641.1
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