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자료유형
학술저널
저자정보
저널정보
한국기상학회 Asia-Pacific Journal of Atmospheric Sciences Asia-Pacific Journal of Atmospheric Sciences Vol.45 No.2
발행연도
2009.5
수록면
121 - 135 (15page)

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This paper proposes an upscaling technique using a long?term measurement of soil moisture at a hillslope scale. A monitoring scheme for soil moisture was designed and operated over a year. The analysis period was divided into four periods in keeping with the seasonal variation of soil moisture and considering the characteristics of terrain features. Based on rigorous regression analysis, significant relationships were established between the seasonalmean soilmoisture values at point scale and topographic attributes. The cumulative distribution function(CDF)matching technique was employed to upscale the soil moisture from the fine resolution obtained from local measurements to coarser resolution at the watershed scale. The spatial distribution of soil depth can be predicted through the application of the multi?resolution valley bottom flatness algorithm. The scaling issues of different resolutions in the terrain analysis could be partially resolved during the CDF matching procedure. However, the uncertainty associated with the complex terrain of the watershed remained in the parameters for the valley bottom evaluation. The spatial distribution of soil water could be predicted in the watershed scale by combing the CDF matching technique with a soil depth prediction scheme.

목차

Abstract
1. Introduction
2. Materials and Methods
3. Results and Discussion
4. Conclusions
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