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Çѱ¹¼öÀÚ¿øÇÐȸ / v.38, no.12, 2005³â, pp.1061-1072
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( Real-time Upstream Inflow Forecasting for Flood Management of Estuary Dam )
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º» ¿¬±¸¿¡¼­´Â ¿µ»êÈ£ÀÇ »ó·ù¿¡ À§Ä¡ÇÑ ³ªÁÖÀ¯¿ªÀÇ È«¼ö½Ã À¯Ãâ·®À» ½Ç½Ã°£À¸·Î ¿¹ÃøÇϱâ À§ÇÏ¿© GreyÈ«¼ö À¯Ãâ¸ðÇüÀ» °³¹ßÇÏ¿´´Ù. ³ªÁÖÀ¯¿ªÀÇ À¯Ãâ·®Àº ³ªÁÖ¼öÀ§°üÃø¼Ò¿¡¼­ ½Ç½Ã°£À¸·Î ÃøÁ¤Çϰí ÀÖÀ¸¸ç, À̰÷Àº ¿µ»êÈ£ÀÇ À¯ÀÔÈ«¼ö·®À» ¿¹Ãø°ú È«¼ö°ü¸®¸¦ À§ÇÑ ÁÖ°üÃø¼ÒÀÌ´Ù. ¸ðÇüÀÇ Áö¹è¹æÁ¤½ÄÀº Grey½Ã½ºÅÛ À̷п¡ ±Ù°ÅÇÏ¿© ±¸¼ºµÇ¾úÀ¸¸ç, ¸ðÇüÀÇ ¸Å°³º¯¼ö´Â Grey ½Ã½ºÅ۸Ű³º¯¼öÀÇ Á¶ÇÕÀ¸·Î ±¸¼ºÇÏ¿´´Ù. ¸ðÇüÀÇ Â÷¼ö´Â ½ÇÃøÀÚ·á¿Í ¸ðÀǰá°ú¸¦ ºñ±³ÇÏ¿© ´Ù¸¥ Â÷¼ö º¸´Ù ¾çÈ£ÇÑ °á°ú¸¦ ³ªÅ¸³»´Â 5Â÷·Î ÇÏ¿´´Ù. ¸ðÇüÀÇ º¸Á¤½Ã ¿¹Ãø°á°ú¿Í ½ÇÃøÄ¡°£ÀÇ RMSE´Â $3.1~290.5m^{3}/sec$¸¦ ³ªÅ¸³ÂÀ¸¸ç, $R^{2}$´Â $0.909~0.999$¸¦ ³ªÅ¸³Â´Ù. ¸ðÇüÀÇ °ËÁ¤½Ã ¿¹Ãø°á°ú¿Í ½ÇÃøÄ¡°£ÀÇ RMSE´Â $20.6~147.4m^{3}/sec$¸¦ ³ªÅ¸³ÂÀ¸¸ç, $R^{2}´Â;0.940~0.998$¸¦ ³ªÅ¸³Â´Ù. ¸Å°³º¯¼ö°¡ ÃßÁ¤µÈ ¸ðÇüÀ» ÀÌ¿ëÇÏ¿© ´ã¼öÈ£ÀÇ À¯ÀÔ·®À» ÇÏõ¼öÀ§ »óÅ¿¡ µû¶ó ¿¹ÃøÇÑ °á°ú, ÇÏõ¼öÀ§°¡ »ó½ÂÇÒ °æ¿ì¿Í Çϰ­ÇÒ °æ¿ìÀÇ ¿¹Ãø È«¼ö·®Àº ¿¹Ãø½Ã°£ÀÌ Áõ°¡ÇÒ¼ö·Ï Ä¿Áö´Â °æÇâÀ» ³ªÅ¸³Â´Ù. ¶ÇÇÑ, ÇÏõ¼öÀ§°¡ ÷µÎ¿¡ °¡±î¿î ½Ã±âÀÇ È«¼ö·®Àº ¿¹Ãø½Ã°£¿¡ °ü°è¾øÀÌ ½ÇÃøÀÚ·á¿Í ºñ½ÁÇÑ °á°ú¸¦ ³ªÅ¸³Â´Ù. ÀÌ¿Í °°Àº °á°ú´Â Grey È«¼öÀ¯Ãâ¸ðÇüÀ» È«¼ö½Ã ´ã¼öÈ£ À¯ÀÔ·®À» ½Ç½Ã°£À¸·Î Á¤È®ÇÏ°Ô ¿¹ÃøÇϴµ¥ Àû¿ëÇÒ ¼ö ÀÖÀ½À» ³ªÅ¸³½´Ù.
A hydrological grey model is developed to forecast short-term river runoff from the Naju watershed located at upstream of the Youngsan estuary dam in Korea. The runoff of the Naju watershed is measured in real time at the Naju streamflow gauge station, which is a key station for forecasting the upstream inflow and operating the gates of the estuary dam in flood period. The model's governing equation is formulated on the basis of the grey system theory. The model parameters are reparameterized in combination with the grey system parameters and estimated with the annealing-simplex method In conjunction with an objective function, HMLE. To forecast accurately runoff, the fifth order differential equation was adopted as the governing equation of the model in consideration of the statistic values between the observed and forecast runoff. In calibration, RMSE values between the observed and simulated runoff of two and six Hours ahead using the model range from 3.1 to 290.5 $m^{3}/s,;R^2$ values range from 0.909 to 0.999. In verification, RMSE values range from 26.4 to 147.4 $m^{3}/s,;R^2$ values range from 0.940 to 0.998, compared to the observed data. In forecasting runoff in real time, the relative error values with lead-time and river stage range from -23.4 to $14.3%$ and increase as the lead time increases. The results in this study demonstrate that the proposed model can reasonably and efficiently forecast runoff for one to six Hours ahead.
 
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Grey È«¼ö À¯Ãâ ¸ðÇü;Annealing-Simplex¹ý;½Ç½Ã°£ È«¼ö ¿¹Ãø;´ã¼öÈ£ È«¼ö °ü¸®;Hydrological grey Model;Annealing-simplex method;Real-time flood forecasting;Flood management of estuary dam;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.38, no.12, 2005³â, pp.1061-1072
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200508824142557)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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