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Çѱ¹¼öÀÚ¿øÇÐȸ / v.29, no.1, 1996³â, pp.129-139
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¸Å°³º¯¼ö ÃßÁ¤¹æ¹ý¿¡ µû¸¥ °¿ìÀÚ·áÀÇ ºÐ¸®È¿°ú
( Separation Effect of Rainfall Data Based on Parameter Estimation Methods ) |
| ±è°æ´ö;¹è´öÈ¿; ¿¬¼¼´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;¿¬¼¼´ëÇб³ °ø°ú´ëÇÐ »ê¾÷±â¼ú¿¬±¸¼Ò ¼±ÀÓ¿¬±¸¿ø, ¿¬¼¼´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú Á¶±³¼ö, ¿¬¼¼´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;
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| ¼ö°ø±¸Á¶¹°ÀÇ °èȹ°ú ¼³°è¿¡ ÀÖ¾î¼ ¼ö¹®ÀÚ·á¿¡ ´ëÇÑ ÀûÁ¤ºÐÆ÷ÇüÀ» ¼±Á¤ÇÏ´Â °ÍÀº ¸Å¿ì Áß¿äÇϸç, ¼±Á¤µÈ ºÐÆ÷ÇÔ¼ö°¡ ½ÇÃøÀÚ·áÀÇ Åë°èÇÐÀû Ư¼ºÀ» Àß ³ªÅ¸³»°í Àִ°¡¸¦ °ËÅäÇÏ´Â °ÍÀº ÇʼöÀûÀÎ °úÁ¦ÀÌ´Ù. º» ¿¬±¸¿¡¼´Â Àü±¹ 22°³ ÁöÁ¡, 7°³ Áö¼Ó±â°£ÀÇ °¿ìÀÚ·á¿¡ ´ëÇÏ¿© 2º¯¼ö ¹× 3º¯¼ö gamma, 2º¯¼ö ¹× 3º¯¼ö lognormal, Gumbel, 2º¯¼ö ¹× 3º¯¼ö log-Gumbel, GEV, log-Pearson type III, 2º¯¼ö ¹× 3º¯¼ö Weibull, 4º¯¼ö ¹× 5º¯¼ö Wakeby ºÐÆ÷¸¦ Àû¿ëÇÏ¿© ¸ð¸àÆ®¹ý, È®·ü°¡Áß ¸ð¸àÆ®¹ý, ÃÖ¿ìµµ¹ý µîÀ¸·Î °¢ ºÐÆ÷ÇüÀÇ ¸Å°³º¯¼ö¸¦ ÃßÁ¤Çϰí, ÀûÇÕ¼º Á¶°ÇÀ» °Ë»çÇÏ¿´´Ù. °¢ ¸Å°³º¯¼ö ÃßÁ¤¹ý¿¡ ÀÇÇÏ¿© ÃßÁ¤µÈ ¸Å°³º¯¼ö¸¦ ÀÌ¿ëÇÏ¿© 10,000¹ø ¸ðÀÇ ¹ß»ýÇÏ¿© ºÐ¸®È¿°ú¸¦ °ËÅäÇÑ °á°ú ¸Å°³º¯¼ö ÀûÇÕ¼ºÀ» °í·ÁÇÑ °æ¿ì ¸ð¸àÆ®¹ý¿¡¼´Â log-Pearson type III ºÐÆ÷, È®·ü°¡Áß ¸ð¸àÆ®¹ý¿¡¼´Â log-Pearson type III¿Í GEV ºÐÆ÷, ÃÖ¿ìµµ¹ý¿¡¼´Â GEV ºÐÆ÷°¡ ºÐ¸®È¿°ú¸¦ °¡Àå ÀÛ°Ô ³ªÅ¸³ÂÀ¸¸ç, 2º¯¼ö ºÐÆ÷ÇüÀÇ °æ¿ì ¸ðµÎ ºÐ¸®È¿°ú°¡ Å©°Ô ³ªÅ¸³µ´Ù. |
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| It is very important to select appropriate distributions for hydrological data in planning and designing hydraulic structures. Also, it is necessary to check whether the selected distribution reproduces the statistical characteristics of the real data. In this study, the parameters of the two- and three-parameter gamma, two- and three-parameter lognormal, Gumbel, two- and three-parameter log-Gumbel, GEV, log-Pearsonn type III, two- and three-parameter Weibull, four- and five-parameter Wakeby distributions were estimated for the rainfall data of 22 sites in Korea with 7 different durations based on the methods of moments, probability weighted moments, and maximum likelihood. And the validity conditions were checked for the estimated parameters. The separation effect for each distribution was examined throught 10,000 simulations using the estimated parameters. As results, the separation effect was the smallest: log-Pearson type III for moment method, log-Pearson type III and GEV for probability weighted moment method, and GEV for maximum likelihood method. However, it is large for the two-parameter distributions. |
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Çѱ¹¼öÀÚ¿øÇÐȸÁö / v.29, no.1, 1996³â, pp.129-139
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1738-9488
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199611920096712)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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