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Çѱ¹¼öÀÚ¿øÇÐȸ / v.43, no.12, 2010³â, pp.1011-1027
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´ÙÁßÃÖÀûȱâ¹ýÀ» ÀÌ¿ëÇÑ °¿ì-À¯»ç-À¯Ãâ ¿¹Ãø ºÒÈ®½Ç¼º Æò°¡
( Assessment of Rainfall-Sediment Yield-Runoff Prediction Uncertainty Using a Multi-objective Optimization Method ) |
| À̱âÇÏ;À¯¿Ï½Ä;Á¤°ü¼ö;Á¶º¹È¯; Ãæ³²´ëÇб³ °Ç¼³¹æÀ翬±¸¼Ò;Ãæ³²´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;Ãæ³²´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;Çѱ¹Á¾ÇÕ±â¼ú ¼öÀÚ¿øºÎ;
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| ¸ðÇüÀÇ ±¸Á¶, ¸ðµ¨¸µ¿¡ »ç¿ëµÇ´Â ÀÚ·á, ¸Å°³º¯¼ö µî¿¡ Æ÷ÇÔµÈ ´Ù¾çÇÑ ºÒÈ®½Ç¼º ¿øÀεéÀº ¼ö¹®¸ðÀÇ ¹× ¿¹Ãø°á°ú¿¡ ÀÖ¾î ºÒÈ®½Ç¼ºÀ» ¾ß±âÇÑ´Ù. º» ¿¬±¸¿¡¼´Â °¿ì-À¯Ãâ ¹× °¿ì-À¯»çÀ¯Ãâ ¸ðÀǰ¡ °¡´ÉÇÑ ºÐÆ÷Çü °¿ì-À¯»ç-À¯Ãâ ¸ðÇüÀ» ¿ë´ã´ï »ó·ùÀ¯¿ªÀΠõõÀ¯¿ª¿¡ Àû¿ëÇÏ¿© ¼ö¹®°î¼± ¹× À¯»ç·®°î¼±ÀÇ ÀçÇö¼ºÀ» Æò°¡Çϰí, ´ÙÁßÃÖÀûȱâ¹ýÀÎ MOSCEMÀ» ÀÌ¿ëÇÏ¿© °¿ì-À¯Ãâ ¸ðµâ, °¿ì-À¯»çÀ¯Ãâ ¸ðµâÀÇ ¸Å°³º¯¼ö¸¦ µ¶¸³ÀûÀ¸·Î º¸Á¤ÇÑ °æ¿ì(Case I°ú II), ±×¸®°í µÎ ¸ðµâÀÌ °áÇÕµÈ °¿ì-À¯»ç-À¯Ãâ ¸ðÇüÀÇ ¸Å°³º¯¼ö¸¦ µ¿½Ã¿¡ º¸Á¤ÇÑ °æ¿ì(Case III)¿¡ ´ëÇÏ¿© Pareto ÃÖÀûÇØ¸¦ ÃßÁ¤Çϰí, ÀÌ¿¡ µû¸¥ ¼ö¹® ¿¹Ãø°á°úÀÇ ºÒÈ®½Ç¼ºÀ» Æò°¡ÇÑ´Ù. ¸Å°³º¯¼ö ºÒÈ®½Ç¼ºÀÇ ÀüÀÌ¿¡ µû¸¥ ¼ö¹®°î¼±ÀÇ ºÒÈ®½Ç¼º Æò°¡ °á°ú(Case I), ¸ðÀDZⰣ µ¿¾È °íÀ¯·®º¸´Ù´Â ÀúÀ¯·® ºÎºÐ¿¡¼ ºÒÈ®½Ç¼º ¹üÀ§°¡ µÎµå·¯Á³À¸¸ç, ÀÌ¿¡ ¹ÝÇØ, À¯»ç·®°î¼±ÀÇ °æ¿ì(Case II) Àú³óµµº¸´Ù´Â °í³óµµ ºÎºÐ¿¡¼ ºÒÈ®½Ç¼º ¹üÀ§°¡ ³Ð°Ô ºÐÆ÷ÇÏ¿´´Ù. °¿ì-À¯»ç-À¯Ãâ ¸ðÇüÀÇ ¸Å°³º¯¼öÀÇ ºÒÈ®½Ç¼ºÀ» µ¿½Ã¿¡ ÃßÁ¤ÇÑ °æ¿ì ¼ö¹®°î¼± ¹× À¯»ç·®°î¼± ¸ðµÎ Case I°ú II¿¡ ºñÇØ ¸ðÀDZⰣ Àü¹Ý¿¡ °ÉÃÄ ºÒÈ®½Ç¼º ¹üÀ§°¡ ³Ð°Ô ºÐÆ÷µÇ¾úÀ¸¸ç, ¸Å°³ º¯¼öÀÇ ºÒÈ®½Ç¼ºÀ¸·Î ÀÎÇØ ´ë»óÀ¯¿ª³» °ÝÀÚº° ħ½Ä ¹× ÅðÀû °ø°£ºÐÆ÷ ¾ç»óÀÌ »óÀÌÇÏ°Ô ³ªÅ¸³µ´Ù. |
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| In hydrologic modeling, prediction uncertainty generally stems from various uncertainty sources associated with model structure, data, and parameters, etc. This study aims to assess the parameter uncertainty effect on hydrologic prediction results. For this objective, a distributed rainfall-sediment yield-runoff model, which consists of rainfall-runoff module for simulation of surface and subsurface flows and sediment yield module based on unit stream power theory, was applied to the mesoscale mountainous area (Cheoncheon catchment; 289.9 $km^2$). For parameter uncertainty evaluation, the model was calibrated by a multi-objective optimization algorithm (MOSCEM) with two different objective functions (RMSE and HMLE) and Pareto optimal solutions of each case were then estimated. In Case I, the rainfall-runoff module was calibrated to investigate the effect of parameter uncertainty on hydrograph reproduction whereas in Case II, sediment yield module was calibrated to show the propagation of parameter uncertainty into sedigraph estimation. Additionally, in Case III, all parameters of both modules were simultaneously calibrated in order to take account of prediction uncertainty in rainfall-sediment yield-runoff modeling. The results showed that hydrograph prediction uncertainty of Case I was observed over the low-flow periods while the sedigraph of high-flow periods was sensitive to uncertainty of the sediment yield module parameters in Case II. In Case III, prediction uncertainty ranges of both hydrograph and sedigraph were larger than the other cases. Furthermore, prediction uncertainty in terms of spatial distribution of erosion and deposition drastically varied with the applied model parameters for all cases. |
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| Ű¿öµå |
| ºÐÆ÷Çü °¿ì-À¯»ç-À¯Ãâ ¸ðÇü;¸Å°³º¯¼ö ºÒÈ®½Ç¼º;¿¹ÃøºÒÈ®½Ç¼º;´ÙÁßÃÖÀûȱâ¹ý;Pareto ÃÖÀûÇØ;distributed rainfall-sediment yield-runoff model;parameter uncertainty;prediction uncertainty;multi-objective optimization;MOSCEM;pareto optimal solution; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.43, no.12, 2010³â, pp.1011-1027
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201007049674079)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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