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Çѱ¹¼öÀÚ¿øÇÐȸ / v.34, no.5, 2001³â, pp.533-542
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( An Analysis of the Drought Period Using Non-Linear Water Balance Model and Palmer Drought Severity1 Index )
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°¡¹³¿¡ ´ëÇÑ ´ëÃ¥À» ¼ö¸³Çϱâ À§Çؼ­´Â °¢ °¡¹³»óź°·Î °¡¹³ÀÇ Áö¼Ó±â°£À» »êÁ¤ÇÏ´Â °ÍÀÌ ¼±ÇàµÇ¾î¾ß ÇÑ´Ù. ÀÌ·¯ÇÑ °¡¹³ÀÇ Áö¼Ó±â°£ ºÐ¼®¿¡ »ç¿ëÇÒ ¼ö ÀÖ´Â ¹æ¹ý¿¡´Â ºñ¼±Çü ¹°¼öÁö¸ðÇü°ú Palmer °¡¹³½ÉµµÁö¼ö¹æ¹ýÀÌ ÀÖ´Ù. ºñ¼±Çü ¹°¼öÁö¸ðÇüÀº ÁöÇ¥¸é°ú ´ë±âÀÇ ¼öºÐÀ̵¿À» °í·ÁÇÑ ¹°¼öÁö¹æ¹ýÀ» Ãß°èÇÐÀû º¯µ¿¿¡ ÀÇÇØ ¾ß±âµÇ´Â °Ç±â¿Í ½ÀÀ±±â »çÀÌÀÇ º¯È¯±â°£À» ¸ðÀÇÇÒ ¼ö°¡ ÀÖ´Ù. Palmer °¡¹³½ÉµµÁö¼ö´Â °­¿ì·®°ú ÀáÀçÁõ¹ß»ê·®À» ¹ÙÅÁÀ¸·Î ±â»óÇÐÀûÀ¸·Î ÇÊ¿äÇÑ °­¿ì·®°ú ½ÇÁ¦°­¿ì·®À» ºñ±³ÇÏ¿© °¡¹³ÀÇ Á¤µµ¸¦ ³ªÅ¸³»´Â ¹°¼öÁö¹æ¹ýÀÌ´Ù. º» ¿¬±¸¿¡¼­´Â ÇѰ­À¯¿ª¿¡ ´ëÇØ ºñ¼±Çü ¹°¼öÁö¸ðÇü°ú Palmer °¡¹³½ÉµµÁö¼ö¸¦ ÀÌ¿ëÇÏ¿© °¡¹³ÀÇ Áö¼Ó±â°£À» »êÁ¤ÇÏ¿´´Ù. ºñ¼±Çü ¹°¼öÁö¸ðÇüÀ» »ç¿ëÇÏ¿© »êÁ¤µÈ Åä¾çÇÔ¼öºñ¿¡ µû¸¥ °¡¹³ÀÇ Áö¼Ó±â°ü°ú Palmer °¡¹³½ÉµµÁö¼ö¸¦ ÀÌ¿ëÇÏ¿© »êÁ¤µÈ Áö¼öº° °¡¹³ÀÇ Áö¼Ó±â°£ÀÌ À¯»çÇÏ°Ô ³ªÅ¸³µ´Ù. ¿¬±¸ °á°ú ÇѰ­À¯¿ª¿¡¼­ÀÇ ±Ø½ÉÇÑ °¡¹³»óÅ¿¡¼­ ½ÀÀ±±â·Î º¯È¯µÇ´Â Áö¼Ó±â°£ÀÌ ¾à 3³âÀ¸·Î »êÁ¤µÇ¾ú´Ù.
In order to establish drought policy, the estimation of drought period for each drought situation should be preceded. Non-linear Water Balance Model(NWBM) and palmer Drought Severity Index (PDSI) can be used for analysis of drought period. As a water balance method considering moisture transfer between land surface and atmosphere, NWBM can be used to estimate transition time between dry and wet period induced by stochastic fluctuations. PDSI is also water balance method to show drought severity comparing actual precipitation with climatically appropriate precipitation based on precipitation and potential evapotranspiration. In this study, the drought periods are estimated using NWBM and PDSI for the Han River Basin. The drought periods according to the soil moisture estimated by NWBS and the drought periods according to drought severity index estimated by PDSI show similar trend. The estimated drought period from extreme drought to wet condition for the Han River Basin is about 3years.
 
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°¡¹³Áö¼Ó±â°£;ºñ¼±Çü ¹°¼öÁö¸ðÇü;Palmer°¡¹³½ÉµµÁö¼ö;Crossing Theory;drought period;non-linear water balance model;Palmer drought severity index;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.34, no.5, 2001³â, pp.533-542
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200111920841112)
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