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Çѱ¹¼öÀÚ¿øÇÐȸ / v.43, no.1, 2010³â, pp.15-24
±ºÁýºÐ¼®À» ÀÌ¿ëÇÑ ¿ì¸®³ª¶ó °¡¹³Æ¯¼ºÀÇ °ø°£Àû ºÐ¼®
( Spatial Analysis of Drought Characteristics in Korea Using Cluster Analysis )
À¯Áö¿µ;ÃÖ¹ÎÇÏ;±èÅ¿õ; ÇѾç´ëÇб³ ´ëÇпø °Ç¼³È¯°æ°øÇаú;ÇѾç´ëÇб³ °Ç¼³È¯°æ°øÇаú;ÇѾç´ëÇб³ °Ç¼³È¯°æ½Ã½ºÅÛ°øÇÐ;
 
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ÃÖ±Ù¿¡´Â È®·ü°­¿ì·®À» »êÁ¤ÇÒ °æ¿ì ÁöÁ¡ºóµµÇؼ®ÀÇ ´ÜÁ¡À» º¸¿ÏÇÑ Áö¿ªºóµµÇؼ®¹ýÀÌ ÀÚÁÖ ½Ç¹«¿¡ Àû¿ëµÇ°í ÀÖÀ¸³ª, °¡¹³¿¡ °ü·ÃÇÑ ¿¬±¸¿¡¼­´Â ´ëºÎºÐ ¾ÆÁ÷±îÁö ÁöÁ¡ÀڷḦ ÀÌ¿ëÇÑ °¡¹³ºÐ¼®À» ½Ç½ÃÇϰí ÀÖ´Ù. º» ¿¬±¸¿¡¼­´Â °¡¹³ÀÇ Áö¿ªÀû Ư¼º ºÐ¼®À» ½Ç½ÃÇϱâ À§ÇÏ¿© ÇÊ¿äÇÑ µ¿ÁúÇÑ °¡¹³Æ¯¼ºÀ» Áö´Ñ Áö¿ªÀ» ±¸ºÐÇÏ´Â ¿¬±¸¸¦ ¼öÇàÇÏ¿´´Ù. º» ¿¬±¸¿¡¼­´Â ±â»óû °­¿ì°üÃø ÁöÁ¡ÀÚ·á Áß 30³â ÀÌ»óÀÇ °­¿ìÀڷḦ º¸À¯ÇÑ 58°³ÀÇ °üÃøÁöÁ¡À» ´ë»óÀ¸·Î Ç¥Áذ­¼öÁö¼ö(SPI)¸¦ »êÁ¤ÇÏ¿© °¡¹³ÀÇ ½Éµµ, Áö¼Ó±â°£, °­µµ, ¹ß»ýºóµµ µî°ú °°Àº °¡¹³Æ¯¼ºÀÎÀÚ¸¦ »ý¼ºÇÏ¿´´Ù. °¡¹³Æ¯¼ºÀÎÀÚ´Â ¼ö¹®ÇÐÀûÀ¸·Î µ¿ÁúÇÑ Æ¯¼ºÀ» Áö´Ñ Áö¿ªÀ» ±¸ºÐÇϴµ¥ Áß¿äÇÑ Á¤º¸¸¦ Á¦°øÇÑ´Ù. º» ¿¬±¸¿¡¼­´Â ´Ù¾çÇÑ °¡¹³Æ¯¼ºÀÎÀÚ¸¦ È¿À²ÀûÀ¸·Î Ȱ¿ëÇÏ¿© K-means ±â¹ýÀ» Àû¿ëÇÑ ±ºÁýºÐ¼®À» ½Ç½ÃÇÏ¿© µ¿ÁúÇÑ °¡¹³Æ¯¼ºÀ» Áö´Ñ Áö¿ªÀ» 6°³ Áö¿ªÀ¸·Î ±¸ºÐÇÏ¿´´Ù. ÀÌ·¯ÇÑ Áö¿ª±¸ºÐÀº °¡¹³ Ư¼ºÀÇ °ø°£Àû ÇØ¼®À» °¡´ÉÇÏ°Ô ÇÒ ¼ö ÀÖ°í, ÁöÁ¡ºóµµ ÇØ¼®ÀÇ ´ÜÁ¡À» º¸¿ÏÇÏ´Â Áö¿ªºóµµ ÇØ¼®µµ °¡´ÉÇÏ°Ô ÇÒ ¼ö ÀÖ´Ù.
Regional frequency analysis is often used to overcome the limitation of point frequency analysis to estimate probability rainfall depths. However, point frequency analysis is still used in drought analyses. This study proposed a practical method to categorize the homogeneous regions of drought characteristics for the analyses of regional characteristics of droughts in Korea. Using rainfall data from 58 observation stations managed by the Korea Meteorological Administration, this study calculated drought attributes, i.e., mean drought indices for various durations using the Standardized Precipitation Index (SPI) and drought severities expressed by durations, depth, and intensity. The drought attributes provided useful information for categorizing stations into the hydrological homogeneous regions. This study introduced a cluster analysis with K-means techniques to group observation stations. The cluster analysis grouped observation stations into 6 regions in Korea. The data in the hydrological homogeneous region would be used in spatial analysis of drought characteristics and drought regional frequency analysis.
 
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Ç¥Áذ­¼öÁö¼ö;°¡¹³Æ¯¼º;±ºÁýºÐ¼®;Standardized Precipitation Index;Drought Characteristics;Clustering Analysis;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.43, no.1, 2010³â, pp.15-24
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201005364710387)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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