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Çѱ¹¼öÀÚ¿øÇÐȸ / v.40, no.2, 2007³â, pp.113-124
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( Improving Low Flow Estimation for Ungauged Basins in Korea ) |
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°¥¼ö·®(low flow)Àº °ú°Å ÀÚ¿¬»óÅ ÇÏõ¿¡¼ °¥¼ö±â¿¡ Èê·¶´ø À¯·®À¸·Î¼ ÀÚ¿¬°ú »ç¶÷ÀÌ °øÀ¯ÇÒ ¼ö ÀÖ´Â ÃÖ¼ÒÇÑÀÇ À¯·®À̸ç, À̼öÃø¸é¿¡¼ ÇÏõ¼öÀÇ °ø±Þ´É·ÂÀ» Æò°¡ÇÏ¿© Ãë¼ö·®À» ¼³Á¤ÇÏ´Â ±âÁØ À¯·®ÀÌ´Ù. ÀϺ»°ú ¿ì¸®³ª¶ó¿¡¼´Â Æò±Õ°¥¼ö·®°ú ±âÁذ¥¼ö·®À», ¹Ì±¹°ú ¿µ±¹ µî¿¡¼´Â 10³âºóµµ 7ÀÏ °¥¼ö·®($7Q_{10}$)À» °¥¼ö·® ÁöÇ¥·Î »ç¿ëÇϰí ÀÖ´Ù. º» ¿¬±¸¿¡¼´Â À§ÀÇ ¼¼ ÁöÇ¥¸¦ °üÃøÀÚ·á¿Í ¸ðÀÇ »ý¼ºÀڷḦ ÀÌ¿ëÇÏ¿© ºñ±³ÇÏ°í °íÂûÇÏ¿© º¸¾Ò´Ù. °¥¼ö·® »êÁ¤À» À§Çؼ´Â °ú°ÅÀÇ °üÃø À¯·®ÀÚ·á°¡ ÇÊ¿äÇϳª ±¹³»¿¡´Â ¼öÀ§°üÃø½Ã¼³ÀÌ ÇÑÁ¤µÇ¾î ÀÖÀ» »Ó ¾Æ´Ï¶ó È«¼ö±â¿¡ ºñÇØ °¥¼ö±â ÀÚ·á°¡ ÅξøÀÌ ºÎÁ·ÇÏ¿© °¥¼ö·® »êÁ¤¿¡ ¸¹Àº ¾î·Á¿òÀ» °Þ°í ÀÖ´Ù. ±¹³»¿¡¼´Â ´ëºÎºÐ ºñÀ¯·®¹ý(drainage-area ratio method)À¸·Î ¹Ì°èÃøÀ¯¿ªÀÇ °¥¼ö·®À» »êÁ¤Çϰí ÀÖ´Ù º» ¿¬±¸¿¡¼´Â ¹Ì°èÃøÀ¯¿ª(ungauged basin)ÀÇ °¥¼ö·®À» »êÁ¤Çϱâ À§ÇÑ ¹æ¹ýÀ¸·Î ºñÀ¯·®¹ý°ú Áö¿ªÈ¸±Í±â¹ý(regional regression method), ±âÀúÀ¯·®»ó°ü¹ý(baseflow correlation method)À» ±¹³»¿¡ Àû¿ëÇÏ¿© º¸°í, °¢ ¹æ¹ýÀÇ Àû¿ë½Ã Áöħ°ú ±¹³»¿¡ ÀûÇÕÇÑ °¥¼ö·® »êÁ¤¹æ¹ýÀ» Á¦½ÃÇÏ¿´´Ù. |
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Low flow is a minimum flow discharging during a dry season in a unregulated stream which can be shared by nature and human being. It is also a standard flow that determines a diversion requirement by evaluating water supply ability of streamflow in the aspect of water use. Low flow indices are used as average low flow and 1-day 10-year low flow in Korea and Japan and as 7-day 10-year low flow in the United States of America and the United Kingdom. In this research, these three indices were compared by the data observed and generated. Although daily records are needed to calculate the low flow, gauging stations are limited and records of the dry season are insufficient in Korea. Drainage-area ratio method is mainly used in Korea to estimate the low flow. This research shows the guideline when the drainage-area ratio method, the regional regression method, and the baseflow correlation method to calculate the low flow of ungauged basins are applied and recommends low flow estimation method suitable to Korea. |
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Ű¿öµå |
Æò±Õ°¥¼ö·®;±âÁذ¥¼ö·®;10³âºóµµ 7ÀÏ °¥¼ö·®;¹Ì°èÃøÀ¯¿ª;ºñÀ¯·®¹ý;Áö¿ªÈ¸±Í±â¹ý;±âÀúÀ¯·®»ó°ü¹ý;average low flow;1-day 10-year low flow;7-day 10-year low flow;ungauged basin;drainage-area ratio method;regional regression method;baseflow correlation method; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.40, no.2, 2007³â, pp.113-124
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200710912630708)
¾ð¾î : Çѱ¹¾î |
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³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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