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http://dx.doi.org/10.12652/Ksce.2010.30.6B.541

The study of Application of Drought Index Using Measured Soil Moisture at KoFlux Tower  

Kim, Sooyoung (홍익대학교 건설도시공학부)
Jo, Hwan Bum (홍익대학교 건설도시공학부)
Lee, Seung Oh (홍익대학교 건설도시공학부)
Choi, Minha (한양대학교 건설환경공학과)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.30, no.6B, 2010 , pp. 541-549 More about this Journal
Abstract
While the number of rainy days is decreasing, the mean annual precipitation is increasing due to abnormal climate changes caused by the global warming in Korea. Owing to the biased-concentration of rainfall during specific short terms, not only flood but also drought becomes more and more serious. From the literature, it is easily found that previous studies about flood have been intensively conducted. However, previous studies about drought have been performed rarely. This study conducted the comparison between two representative drought indexes calculated from soil moisture and precipitation. Study area was Haenam-gun, Jeollanam-do in Korea. Soil Moisture Index(SMI) was calculated from soil moisture data while the Standardized Precipitation Index(SPI) and the Palmer Drought Severity Index(PDSI) were calculated from meteorological data. All monthly data utilized in this study were observed at the KoFlux Tower. After the comparative analysis, three indexes showed similar tendency. Therefore, it is thought that the drought index using soil moisture measured at the KoFlux Tower is reasonable, which is because the soil moisture is immediately affected by all the meteorological factors.
Keywords
drought index; soil moisture; SMI; koflux; PDSI; correlation analysis;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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