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Time series analysis for evaluating hydrological responses of pore-water pressure to rainfall in a slope

Title
Time series analysis for evaluating hydrological responses of pore-water pressure to rainfall in a slope
Authors
Kim J.Lee J.
Ewha Authors
이정훈
SCOPUS Author ID
이정훈scopus
Issue Date
2017
Journal Title
Hydrological Sciences Journal
ISSN
0262-6667JCR Link
Citation
vol. 62, no. 9, pp. 1412 - 1421
Keywords
pore-water pressureprincipal component analysisrainfalltime series analysis
Publisher
Taylor and Francis Ltd.
Indexed
SCIE; SCOPUS WOS scopus
Abstract
Characterization of pore-water pressure at the soil–atmosphere interface is a major requirement in relation to slope instability. A rain-gauge and five piezometers (BH1–BH5) were installed on a slope located in a Korean military base. The upper slope (BH4, BH5) was covered with plastic sheets to prevent rainwater from percolating into the slope due to safety issues. Rainfall is matched by prompt changes in the pore-water pressure except at BH5. Due to the plastic cover, the pore water does not show any significant change in the early period by evapotranspiration. From correlation analysis, two wells (BH3, BH5) have longer memory effects due to matrix flow of past precipitation. Two principal components show hydrological responses of pore water to rainfall during intense rainfall, but PC2 does not indicate any important changes in low or no rainfall. This study suggests that correlation analysis with PCA can be a valuable tool for interpreting datasets consisting only of pore-water pressure. © 2017 IAHS.
DOI
10.1080/02626667.2017.1328105
Appears in Collections:
사범대학 > 과학교육과 > Journal papers
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