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Çѱ¹¼öÀÚ¿øÇÐȸ / v.44, no.11, 2011³â, pp.889-902
°¡¹³ºóµµÇؼ®À» ÅëÇÑ °¡¹³½Éµµ-Áö¼Ó½Ã°£-»ý±âºóµµ °î¼±ÀÇ À¯µµ
( Derivation of Drought Severity-Duration-Frequency Curves Using Drought Frequency Analysis )
ÀÌÁÖÇå;±èâÁÖ; ÁߺδëÇб³ Åä¸ñ°øÇаú;ÁߺδëÇб³ Åä¸ñ°øÇаú;
 
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º» ¿¬±¸¿¡¼­´Â Çѹݵµ¿¡¼­ ¹ß»ýÇß´ø °ú°Å °¡¹³»ç»óÀÇ Á¤·®Àû Æò°¡¸¦ À§ÇÑ °¡¹³½Éµµ-Áö¼Ó±â°£-»ý±âºóµµ(Severity-Duration-Frequency, SDF) °î¼±À» À¯µµÇϱâ À§Çؼ­ °¡¹³Áö¼ö¸¦ ÀÌ¿ëÇÑ ºóµµÇؼ®À» ½Ç½ÃÇÏ¿´´Ù. ºÐ¼®ÁöÁ¡À¸·Î´Â 4´ë°­ À¯¿ªÀ» Áß½ÉÀ¸·Î ÇÏ´Â ±â»óû »êÇÏÀÇ ¼­¿ï, ´ëÀü, ´ë±¸, ±¤ÁÖ, ºÎ»ê°üÃø¼Ò¸¦ ¼±Á¤ÇÏ¿´À¸¸ç °­¼öÀÚ·á´Â 1974~2010³â(37³â)ÀÇ °­¼ö ÀڷḦ ÀÌ¿ëÇÏ¿´´Ù. °¡¹³ºóµµÇؼ®¿¡´Â ±â»óÇÐÀû °¡¹³Áö¼öÀÎ SPI (Standardized Precipitation Index)¸¦ ¼±Á¤ÇÏ¿´À¸¸ç È®·üºÐÆ÷Çü¿¡ ´ëÇÑ ÀûÇÕµµ °ËÁ¤¿¡¼­´Â ÀϹݱØÄ¡ºÐÆ÷(GEV, Generalized Extreme Value)°¡ ÃÖÀûÀÇ È®·üºÐÆ÷ÇüÀ¸·Î ¼±Á¤µÇ¾ú´Ù. °¡¹³Áö¼öÀÇ ºóµµÇؼ® ÅëÇÏ¿© À¯µµµÈ ÁÖ¿ä °üÃø¼Òº° SDF (Severity-Duration-Frequency) °î¼±À» ÀÌ¿ëÇÏ¿© °ú°ÅÀÇ ÁÖ¿ä °¡¹³»ç»ó¿¡ ´ëÇÑ ÀçÇö±â°£À» Á¦½ÃÇÏ¿´À¸¸ç 1994~1995³â °¡¹³ÀÇ °æ¿ì ³²ºÎÁö¹æÀ» Áß½ÉÀ¸·Î ÇÏ´Â ±Ø½ÉÇÑ °¡¹³À¸·Î¼­ ±¤ÁÖ°üÃø¼Ò¿¡¼­´Â 50~100³â, ºÎ»ê°üÃø¼Ò¿¡¼­´Â 100~200³âÀÇ ³ôÀº ÀçÇö±â°£À» ³ªÅ¸³»¾ú´Ù. ±×¹Û¿¡ 1988~1989³â °¡¹³ÀÇ °æ¿ì ¼­¿ï°üÃø¼Ò¿¡¼­´Â 300³âÀÇ ÀçÇö±â°£À» ³ªÅ¸³»¾ú´Ù.
In this study, frequency analysis using drought index had implemented for the derivation of drought severity-duration-frequency (SDF) curves to enable quantitative evaluations of past historical droughts having been occurred in Korean Peninsular. Seoul, Daejeon, Daegu, Gwangju, and Busan weather stations were selected and precipitation data during 1974~2010 (37 years) was used for the calculation of Standardized Precipitation Index (SPI) and frequency analysis. Based on the results of goodness of fit test on the probability distribution, Generalized Extreme Value (GEV) was selected as most suitable probability distribution for the drought frequency analysis using SPI. This study can suggest return periods for historical major drought events by using newrly derived SDF curves for each stations. In case of 1994~1995 droughts which had focused on southern part of Korea. SDF curves of Gwangju weather station showed 50~100 years of return period and Busan station showed 100~200 years of return period. Besides, in case of 1988~1989 droughts, SDF of Seoul weather station were appeared as having return periods of 300 years.
 
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°¡¹³Áö¼ö;Ç¥Áذ­¼öÁö¼ö;ºóµµÇؼ®;SDF °î¼±;drought index;standardized precipitation index;frequency analysis;SDF curve;SPI;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.44, no.11, 2011³â, pp.889-902
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201101152705485)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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