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Çѱ¹¼öÀÚ¿øÇÐȸ / v.44, no.11, 2011³â, pp.853-861
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³«µ¿°À¯¿ª ÇÏõÀ¯·® ¿¹Ãø¸ðÇü ±¸Ãà
( Streamflow Forecast Model on Nakdong River Basin ) |
À̺´ÁÖ;¹è´öÈ¿; ±¹¸³±â»ó¿¬±¸¼Ò ÀÀ¿ë±â»ó¿¬±¸°ú ¼ö¹®ÀÚ¿ø¿¬±¸ÆÀ;¼¼Á¾´ëÇб³ ¹°ÀÚ¿ø¿¬±¸¼Ò.Åä¸ñȯ°æ°øÇаú;
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º» ¿¬±¸´Â ¿¬¼ÓÇü °¿ì-À¯Ãâ¸ðÇü°ú °üÃøÀ¯·® Àڷᵿȱâ¹ýÀ¸·Î ¾Ó»óºí Ä®¸¸ÇÊÅÍ ±â¹ýÀ» ¿¬°èÇÑ SURF ¸ðÇüÀ» ³«µ¿°À¯¿ª¿¡ Àû¿ëÇÏ¿© ÇÏõÀ¯·®¿¹ÃøÀÇ Àû¿ë¼ºÀ» Æò°¡ÇϰíÀÚ Çϴµ¥ ±× ¸ñÀûÀÌ ÀÖ´Ù. ³«µ¿°À¯¿ªÀ» 43°³ ¼ÒÀ¯¿ªÀ¸·Î ±¸ºÐÇϰí 2006³â°ú 2007³âÀÇ È«¼ö±â°£ µ¿¾È 12°³ Æò°¡ÁöÁ¡¿¡ ´ëÇØ À¯Ãâ¸ðÀǸ¦ ¼öÇàÇÏ¿´´Ù. °üÃøÀ¯·® ÀÚ·áµ¿È È¿°ú·Î ÀÎÇØ ¿¹ÃøÀ¯·®ÀÇ Á¤È®µµ°¡ Çâ»óµÇ¸ç 1~5½Ã°£ÀÇ ¿¹Ãø¼±Çà½Ã°£º° À¯È¿¼ºÁö¼ö¸¦ ºÐ¼®ÇÑ °á°ú ÀڷᵿȷΠÀÎÇØ 46.2~30.1%ÀÇ ¸ðÀÇÀ¯·®ÀÇ Á¤È®µµ°¡ °³¼±µÇ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¶ÇÇÑ °üÃø°¿ìÀÇ 50%¸¦ Àû¿ëÇÏ¿© ÀÚ·áµ¿È Àü ÈÄÀÇ ¸ðÀÇ Ã·µÎÀ¯·®¿¡ ´ëÇÑ Æò±ÕÁ¤»óÀý´ë¿ÀÂ÷¸¦ ºñ±³ÇÏ¿´À¸¸ç ÀڷᵿȷΠÀÎÇØ 40% ÀÌ»óÀÇ Á¤È®µµ°¡ Çâ»óµÊÀ» È®ÀÎÇÏ¿´´Ù. ÀÌ»óÀÇ °á°ú·ÎºÎÅÍ SURF ¸ðÇüÀº ³«µ¿°À¯¿ªÀÇ ½Ç½Ã°£ ÇÏõÀ¯·®¿¹Ãø¿¡ Ȱ¿ëµÉ ¼ö ÀÖÀ» °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù. |
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The objective of this study is to assess Sejong University River Forecast (SURF) model which consists of a continuous rainfall-runoff model and measured streamflow assimilation using ensemble Kalman filter technique for streamflow forecast on Nakdong river basin. The study area is divided into 43 subbasins. The forecasted streamflows are evaluated at 12 measurement sites during flood season from 2006 to 2007. The forecasted ones are improved due to the impact of the measured streamflows assimilation. In effectiveness indices corresponding to 1~5 h forecast lead times, the accuracy of the forecasted streamflows with the assimilation approach is improved by 46.2~30.1% compared with that using only the rainfall-runoff model. The mean normalized absolute error of forecasted peak flow without and with data assimilation approach in entering 50% of the measured rainfall, respectively, the accuracy of the latter is improved about 40% than that of the former. From these results, SURF model is able to be used as a real-time river forecast model. |
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Ű¿öµå |
¿¬¼ÓÇü °¿ì-À¯Ãâ¸ðÇü;ÀڷᵿÈ;¾Ó»óºí Ä®¸¸ÇÊÅÍ;SURF ¸ðÇü;ÇÏõÀ¯·®¿¹Ãø;³«µ¿°À¯¿ª;continuous rainfall-runoff model;data assimilation;ensemble Kalman filter;SURF model;streamflow forecast;Nakdong river basin; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.44, no.11, 2011³â, pp.853-861
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201101152705479)
¾ð¾î : Çѱ¹¾î |
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³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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