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Çѱ¹¼öÀÚ¿øÇÐȸ / v.37, no.1, 2004³â, pp.21-29
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½Å°æ¸Á±â¹ý°ú º¸Á¶ ÀڷḦ »ç¿ëÇÑ ¿ø°ÝÃøÁ¤ Åä¾ç¼öºÐÀÚ·áÀÇ Downscaling±â¹ý °³¹ß
( Development a Downscaling Method of Remotely-Sensed Soil Moisture Data Using Neural Networks and Ancillary Data ) |
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| The growth of water resources engineering associated with stable supply, management, development is essential to overcome the coming water deficit of our country. Large scale remote sensing and the analysis of sub-pixel variability of soil moisture fields are necessary in order to understand water cycle and to develop appropriate hydrologic model. The target resolution of coming Global monitoring of soil moisture field is about 10km which is not appropriate for the regional scale hydrologic model. Therefore, we need a downscaling scheme to generate hydrologic variables which are suitable for the regional hydrologic model. The results of the analysis of sub-pixel soil moisture variability show that the relationship between ancillary data and soil moisture fields shows there is very weak linear relationship. A downscaling scheme was developed using physically-based classification scheme and Neural Networks which are able to link the nonlinear relationship between ancillary data and soil moisture fields. The model is demonstrated by downscaling soil moisture fields from 4km to 0.2km resolution using remotely-sensed data from the Washita'92 experiment. |
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| Ű¿öµå |
| Åä¾ç¼öºÐ;º¸Á¶ÀÚ·á;½Å°æ¸Á ±â¹ý;Downscaling;Soil Moisture;Downscaling;Ancillary Data;Neural Network; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.37, no.1, 2004³â, pp.21-29
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200411922194654)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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