Non-destructive measurements of unsaturated seepage flow using surface ground-penetrating radar

Y. Takeshita, S. Morikami, T. Yamashita, S. Kuroda, T. Morii, M. Inoue

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Surface ground-penetrating radar (GPR) was assessed as a non-destructive method to measure the temporal and spatial variability of unsaturated seepage flow under uniform wetting conditions on a homogeneous sandy soil. GPR profile survey with 400MHz antenna was conducted. GPR reflected wave from advancing wetting front during uniform field infiltration experiments was used to map the wetting front depth variability with time. The dielectric constant of soil measured by vertical soil moisture probe below the ground surface was used as standard measures of soil moisture to compare with the GPR estimated unsaturated seepage flow behavior. The utility of our proposed GPR profile survey was demonstrated by using numerical seepage flow FEM analysis of field infiltration experiments. There was good agreement between computed and measured wetted zone movements in two-dimensional unsaturated seepage flow. Traceability of the wetting front depth variability with time was found by GPR profile survey.

Original languageEnglish
Title of host publicationExperimental and Applied Modeling of Unsaturated Soils - Proceedings of the 2010 GeoShanghai International Conference
Pages211-217
Number of pages7
Edition202 GSP
DOIs
Publication statusPublished - Sep 3 2010
Event2010 GeoShanghai International Conference - Experimental and Applied Modeling of Unsaturated Soils - Shanghai, China
Duration: Jun 3 2010Jun 5 2010

Publication series

NameGeotechnical Special Publication
Number202 GSP
ISSN (Print)0895-0563

Other

Other2010 GeoShanghai International Conference - Experimental and Applied Modeling of Unsaturated Soils
CountryChina
CityShanghai
Period6/3/106/5/10

Keywords

  • Measurement
  • Nondestructive tests
  • Radar
  • Seepage

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

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  • Cite this

    Takeshita, Y., Morikami, S., Yamashita, T., Kuroda, S., Morii, T., & Inoue, M. (2010). Non-destructive measurements of unsaturated seepage flow using surface ground-penetrating radar. In Experimental and Applied Modeling of Unsaturated Soils - Proceedings of the 2010 GeoShanghai International Conference (202 GSP ed., pp. 211-217). (Geotechnical Special Publication; No. 202 GSP). https://doi.org/10.1061/41103(376)27