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Çѱ¹¼öÀÚ¿øÇÐȸ / v.43, no.4, 2010³â, pp.353-365
ºÐÆ÷Çü °­¿ì-À¯Ãâ ¸ðÇüÀ» ÀÌ¿ëÇÑ ¹Ì°èÃø Áß¼ÒÀ¯¿ªÀÇ À¯·® ÃßÁ¤
( Discharge Estimation at Ungauged Catchment Using Distributed Rainfall-Runoff Model )
ÃÖÀ±¼®;±è°æÅ¹;½É¸íÇÊ; Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø ¼öÀÚ¿ø¿¬±¸½Ç;Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø ¼öÀÚ¿ø¿¬±¸½Ç;ÀÎÇÏ´ëÇб³ »çȸ±â¹Ý½Ã½ºÅÛ°øÇкÎ;
 
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ÇÏõÀÇ À¯·® ÃøÁ¤Àº ´ëºÎºÐ È«¼ö ¿¹º¸Áö¿ª, ´ï »ó·ùÁö¿ª, ´ëÇÏõ ¹× À¯¿ª³» ÁÖ¿ä ÁöÁ¡À» À§ÁÖ·Î ¼öÇàµÇ°í ÀÖÀ¸¸ç, ÀÌ¿¡ µû¶ó¼­ Áß¼ÒÇÏõ°ú ¼ÒÀ¯¿ª¿¡ ´ëÇÑ À¯·® »êÁ¤¿¡ ¾î·Á¿òÀÌ ÀÖ´Ù. ¹°¸®Àû ±â¹ÝÀÇ ºÐÆ÷Çü ¸ðÇü¿¡¼­´Â À¯¿ªÀÇ ÁöÇüÇÐÀû ¸Å°³ º¯¼ö¸¦ ±â¹ÝÀ¸·Î °­¿ì-À¯Ãâ Çö»óÀ» ÇØ¼®Çϰí ÀÖÀ¸¸ç, ƯÁ¤ ÁöÁ¡¿¡ ´ëÇØ¼­ ÃÖÀûÈ­µÈ ¸Å°³º¯¼ö¸¦ ÀÌ¿ëÇÏ¿© À¯¿ª ³» ¸ðµç ÁöÁ¡¿¡ ´ëÇÑ À¯·®À» ¸ðÀÇÇÒ ¼ö ÀÖ´Ù. º» ¿¬±¸¿¡¼­´Â ¹°¸®Àû ±â¹ÝÀÇ ºÐÆ÷Çü ¸ðÇüÀÎ GRM(Grid based Rainfall-runoff Model)À» ÀÌ¿ëÇÏ¿© À¯Ãⱸ ÁöÁ¡¿¡ ´ëÇØ¼­ ¸ðÇüÀ» º¸Á¤Çϰí, À̸¦ ÅëÇØ¼­ »ó·ùÀÇ ÇÏõÁöÁ¡¿¡ ´ëÇÑ À¯·®À» ÃßÁ¤ÇÔÀ¸·Î½á µ¿ÀÏ ¼ö°è¿¡¼­ À¯·® ÃøÁ¤ÀÌ ÀÌ·ç¾îÁöÁö ¾Ê´Â Áß¼ÒÇÏõÀÇ ¼ÒÀ¯¿ª¿¡ ´ëÇÑ ¸ðÇüÀÇ Áö¿ªÈ­ °¡´É¼ºÀ» Æò°¡ÇϰíÀÚ ÇÑ´Ù. ´ë»ó À¯¿ªÀº ³«µ¿°­ÀÇ À§Ãµ À¯¿ª°ú À¯µîõÀÇ º¹¼ö À¯¿ªÀ» ¼±Á¤ÇÏ¿´À¸¸ç, ¹«¼º°ú º¹¼ö ¼öÀ§°üÃø¼Ò¿¡ ´ëÇØ¼­ ÃßÁ¤µÈ ¸Å°³º¯¼ö¸¦ ÀÌ¿ëÇÏ¿© ¹Ì¼º ¹× ½Å´ë ¼öÀ§°üÃø¼ÒÀÇ À¯·®À» ¸ðÀÇÇÏ¿´´Ù. ¿¬±¸°á°ú ¹Ì¼º ¹× ½Å´ë ¼öÀ§°üÃø¼ÒÀÇ ¸ðÀǰá°ú´Â ÷µÎÀ¯·® ¹× ÷µÎ½Ã°£¿¡ ´ëÇØ¼­ °üÃø ¼ö¹®°î¼±À» Àß ÀçÇöÇÏ¿´À¸¸ç, ÃÑÀ¯Ãâ·®°ú ÷µÎÀ¯·® ¹× ÷µÎ½Ã°£¿¡ ´ëÇØ¼­ °üÃø°ª°ú ¼±ÇüÀÇ ³ôÀº »ó°ü¼ºÀ» ÀϰüµÇ°Ô º¸À̰í ÀÖ´Ù. µû¶ó¼­ µ¿ÀÏ ¼ö°è¿¡ ÀÖ´Â »ó·ù ¹Ì°èÃø Áß¼ÒÀ¯¿ªÀÇ À¯·® ÃßÁ¤½Ã GRMÀº ÃæºÐÈ÷ Àû¿ë¼ºÀÌ ÀÖ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
Generally, river discharge is measured at flood forecasting points, upstream dam points, large rivers, and important points over a basin, and it is hard to estimate discharge of medium or small stream and small catchment. Physically based rainfall-runoff model with geographical parameters can simulate discharge at all the points within a basin with optimized parameters for a point in the basin. In this study, GRM (Grid based Rainfall-runoff Model) calibrated at the outlet is applied. The discharge at upstream point is estimated and the possibility of model regionalisation is examined for ungauged catchment of small or medium stream within a river system. Wicheon and Boksu watershed in Nakdonggang (Riv.) and Yudeungcheon (Riv.) respectively are selected. The discharge at Miseong and Sindae station is simulated with the parameters estimated at Museong and Boksu station. The results of Miseong and Sindae station show good agreement with observed hydrographs in peak discharge and peak time and consistently linear relationships with high correlations in discharge volume, peak discharge, and peak time. And it shows GRM could be applied to estimate discharge at ungauged catchments along a river system.
 
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¹Ì°èÃø À¯¿ª;ºÐÆ÷Çü °­¿ì-À¯Ãâ ¸ðÇü;Áö¿ªÈ­;GRM;ungauged catchment;distributed rainfall-runoff model;regionalisation;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.43, no.4, 2010³â, pp.353-365
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201013343111218)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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