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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.41, no.1, 2008³â, pp.43-53
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( Estimation of Storm Hydrographs in a Small Forest Watershed Using a Distributed Hydrological Model ) |
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| º» ¿¬±¸ÀÇ ¸ñÀûÀº ºÐÆ÷Çü ¼ö¹®¸ðÇüÀÎ TOPMODELÀ» ÀÌ¿ëÇÏ¿© »ê¸²À¯¿ªÀÇ È«¼ö¼ö¹®°î¼±À» ÃßÁ¤ÇÏ´Â °ÍÀÌ´Ù. À̸¦ À§ÇÏ¿© À¯¿ª¸éÀû 58.3haÀÇ ¸í¼ºÀ¯¿ªÀ» ¼±Á¤ÇÏ¿´À¸¸ç, ´ë»óÀ¯¿ª¿¡ ´ëÇÏ¿© °¿ì·®°ú À¯Ãâ·®À» ÃøÁ¤ÇÏ¿´´Ù. Monte Carlo±â¹ýÀ» ÀÌ¿ëÇÏ¿© °¿ì»ç»óº°·Î ÃÖÀûÀÇ ¸Å°³ º¯¼ö Á¶ÇÕÀ» ±¸Çϰí, ¸Å°³º¯¼öº° ¸ðÀDZⰣ¿¡ ´ëÇÑ Æò±Õ°ªÀ» Àû¿ëÇÏ¿© ¸Å°³º¯¼ö¸¦ °áÁ¤ÇÏ¿´´Ù. 1997³â¿¡ ÃøÁ¤µÈ 6°³ÀÇ °¿ì-À¯Ãâ·® ÀڷḦ ÀÌ¿ëÇÏ¿© ¸Å°³º¯¼ö º¸Á¤À» ½Ç½ÃÇÏ¿´À¸¸ç, $1998sim1999$³â¿¡ ÃøÁ¤µÈ 8°³ÀÇ °¿ì-À¯Ãâ·® ÀڷḦ ÀÌ¿ëÇÏ¿© ¸ðÇüÀÇ °ËÁõÀ» ½Ç½ÃÇÏ¿´´Ù. º¸Á¤±â°£¿¡ ´ëÇÑ À¯Ãâ·® ÃßÁ¤ ¿ÀÂ÷´Â $-2.74sim1.81%$ÀÇ ¹üÀ§¸¦ º¸¿´À¸¸ç, ¸ðÇü È¿À²(E)Àº Æò±Õ 0.92À̾ú´Ù. 6°³ÀÇ °¿ì»ç»ó¿¡ ´ëÇÏ¿© ½ÇÃøµÈ Æò±Õ ÷µÎÀ¯·®Àº $0.324m^3;s^{-1}$À̾úÀ¸¸ç, ÀÌ¿¡ ´ëÇÑ ÃßÁ¤Ä¡´Â $0.295m^3;s^{-1}$·Î ¸ðÀǵǾú´Ù. °¿ì »ç»óº° ÷µÎÀ¯·®ÀÇ ¿ÀÂ÷¹üÀ§´Â $-27.65sim-1.13%$·Î ³ªÅ¸³µÀ¸¸ç, ÀÌ´Â °¿ìƯ¼º ¹× ¼±Çà°¿ìÁ¶°Ç¿¡ ¿µÇâÀ» ¹ÞÀº °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù. °ËÁõ±â°£¿¡ ´ëÇÏ¿© °¢ °¿ì»ç»óº° ¸ðÇüÈ¿À²(E)ÀÇ Æò±Õ°ªÀº 0.92·Î ³ªÅ¸³µ´Ù. ÷µÎÀ¯·®ÀÇ ½ÇÃø°ªÀº Æò±ÕÀûÀ¸·Î $0.087m^3;s^{-1}$À̾úÀ¸¸ç, ÃßÁ¤µÈ ÷µÎÀ¯·®ÀÇ Æò±ÕÀº $0.090m^3;s^{-1}$·Î ³ªÅ¸³µ´Ù. ÷µÎ½Ã°£Àº º¸Á¤±â°£¿¡ ´ëÇÏ¿©´Â °üÃø°ª°ú ¸ðÀǰªÀÇ Æò±ÕÀÌ °¢°¢ 18.3 hrs¿Í 11.0 hrsÀ̾úÀ¸¸ç, °ËÁõ±â°£¿¡ ´ëÇÏ¿©´Â °¢°¢ 16.6hrs¿Í 13.5 hrsÀ̾ú´Ù. |
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| This study was conducted to simulate storm hydrographs on a small forested watershed using TOPMODEL, which is a distributed hydrological model. The Myeongseong watershed, which is 58.3 ha in size, was selected to monitor rainfall and runoff data. The Monte Carlo simulation was also used to calibrate parameters of TOPMODEL. Six rainfall-runoff pairs collected at the watershed in the year 1997 were used for parameter calibration, and eight rainfall-runoff pairs collected during the period of $1998sim1999$ were used for validation effort. The errors of runoff volume ranged from -2.74% to 1.81%, and an average value of model efficiency in terms of runoff volume was 0.92 for the calibration period. The average value of observed peak discharge was $0.324m^3;s^{-1}$ for six rainfall-runoff pairs, while the prediction value was $0.295m^3;s^{-1}$. The simulation errors of peak discharge varied according to rainfall characteristics and antecedent condition, within ranges of -27.65% to -1.13%. The model efficiency for the validation period was 0.92. For the validation period, observed peak discharges have an average value of $0.087m^3;s^{-1}$ and average value of simulated peak discharge was $0.090m^3;s^{-1}$. Observed and simulated values of time to peak for the calibration period were 18.3 hrs and 11.0 hrs, respectively, and 16.6 hrs and 13.5 hrs, respectively, for the validation period. |
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| Ű¿öµå |
| TOPMODEL;runoff;peak discharge;storm hydrograph;Monte Carlo simulation; |
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Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.41, no.1, 2008³â, pp.43-53
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200817154059289)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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