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Çѱ¹¼öÀÚ¿øÇÐȸ / v.40, no.10, 2007³â, pp.811-821
À¯ÀüÀÚ¾Ë°í¸®ÁòÀ» ÀÌ¿ëÇÑ °­¿ì°­µµ½Ä ¸Å°³º¯¼ö ÃßÁ¤¿¡ °üÇÑ ¿¬±¸(I): ±âÁ¸ ¸Å°³º¯¼ö ÃßÁ¤¹æ¹ý°úÀÇ ºñ±³
( Parameter Estimation of Intensity-Duration-Frequency Curve Using Genetic Algorithm (I): Comparison Study of Existing Estimation Method )
±èżø;½ÅÁÖ¿µ;±è¼ö¿µ;ÇãÁØÇà; ¿¬¼¼´ëÇб³ »çȸȯ°æ½Ã½ºÅÛ°øÇкΠBK21;¿¬¼¼´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;¿¬¼¼´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;¿¬¼¼´ëÇб³ »çȸȯ°æ½Ã½ºÅÛ°øÇкΠÅä¸ñȯ°æ°øÇаú;
 
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ÇöÀç ±¹³»¿¡¼­ »ç¿ëµÇ°í ÀÖ´Â Talbot, Sherman, JapaneseÇü °­¿ì°­µµ½ÄÀº ¸Å°³º¯¼öÃßÁ¤ÀÌ ¿ëÀÌÇÏ´Ù´Â ÀåÁ¡ÀÌ ÀÖÁö¸¸, ÀÌ¿øÈ¯ µî(1993)°ú ÇãÁØÇà µî(1999)ÀÌ °³¹ßÇÑ °­¿ì°­µµ½Ä¿¡ ºñÇÏ¿© Á¤È®µµ°¡ ¶³¾îÁö¸ç ÀçÇö±â°£À» °í·ÁÇÒ ¼ö ¾ø´Ù´Â ´ÜÁ¡ÀÌ ÀÖ´Ù. º» ¿¬±¸¿¡¼­´Â ¸Å°³º¯¼ö ÃßÁ¤»óÀÇ ¾î·Á¿ò ¶§¹®¿¡ ³Î¸® »ç¿ëµÇÁö ¾Ê´Â ÇãÁØÇà µî(1999)ÀÌ Á¦¾ÈÇÑ °­¿ì°­µµ½ÄÀÇ ¸Å°³º¯¼ö¸¦ À¯ÀüÀÚ¾Ë°í¸®ÁòÀ» ÀÌ¿ëÇÏ¿© ÃßÁ¤ÇÏ´Â ¹æ¹ýÀ» Á¦½ÃÇÏ¿´´Ù. ±â»óû 22°³ ÁöÁ¡¿¡¼­ °üÃøµÈ °­¿ìÀÚ·áÀÇ Áö¼Ó±â°£º° ³âÃÖ´ëÄ¡ÀڷḦ ±¸ÃàÇÑ ÈÄ ÁöÁ¡ºóµµÇؼ®À» Àû¿ëÇÑ °á°ú¸¦ ÀÌ¿ëÇÏ¿© °­¿ì°­µµ½ÄÀÇ ¸Å°³º¯¼ö¸¦ ÃßÁ¤ÇÏ¿´À¸¸ç, ÃÖÀûÈ­±â¹ýÀ¸·Î »ç¿ëµÈ À¯ÀüÀÚ¾Ë°í¸®ÁòÀÇ ¸ñÀûÇÔ¼ö·Î´Â Æò±ÕÁ¦°ö±Ù¿ÀÂ÷(RMSE)¿Í Æò±ÕÁ¦°ö±Ù»ó´ë ¿ÀÂ÷(RRMSE)¸¦ »ç¿ëÇÏ¿´´Ù. ȸ±ÍºÐ¼®¿¡ ±Ù°ÅÇÑ ±âÁ¸ÀÇ °­¿ì°­µµ½Ä°ú ºñ±³ÇÑ °á°ú, ÇãÁØÇà µî(1999)ÀÌ °³¹ßÇÑ °­¿ì °­µµ½ÄÀÇ ¸Å°³º¯¼ö¸¦ ÃßÁ¤Çϴµ¥ À־ RRMSE°ªÀ» ÃÖ¼ÒÈ­½ÃŰ´Â ¸ñÀûÇÔ¼ö¸¦ »ç¿ëÇÏ´Â °ÍÀÌ °¡Àå Á¤È®ÇÑ °á°ú°ªÀ» ¾òÀ» ¼ö ÀÖ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
The intensity-duration-frequency (IDF) curves by Talbot, Sherman and Japanese type formulas are widely used in South Korea since the parameters are easily estimated. However, these IDF curves' accuracies are relatively worse than those of the IDF curves developed by Lee et al. (1993) and Heo et al. (1999), and different parameters for the given return periods should be computed. In this study, parameter estimation method for the IDF curve by Heo et al. (1999) is suggested using genetic algorithm (GA). Quantiles computed by at-site frequency analysis using the rainfall data of 22 rainfall gauges operated by Korea Meteorological Administration are employed to estimate the parameters of IDF curves and minimizing root mean squared error (RMSE) and relative RMSE (RRMSE) of observed and computed quantiles are used as objective functions of GA. The comparison of parameter estimation methods between the empirical regression analysis and the suggested method show that the IDF curve in which the parameters are estimated by GA using RRMSE as an objective function is superior to the IDF curves using RMSE.
 
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À¯ÀüÀÚ¾Ë°í¸®Áò;°­¿ì°­µµ½Ä;¸Å°³º¯¼öÃßÁ¤;Genetic Algorithm;IDF curve;Parameter estimation;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.40, no.10, 2007³â, pp.811-821
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200735822476570)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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