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Çѱ¹¼öÀÚ¿øÇÐȸ / v.38, no.10, 2005³â, pp.801-810
Nash ¸ðÇüÀÇ Áöü½Ã°£À» ÀÌ¿ëÇÑ GIUH À¯µµ
( The derivation of GIUH by means of the lag time of Nash model )
±èÁÖö;À±¿©Áø;±èÀçÇÑ; Ãæ³²´ëÇб³ »ê¾÷±â¼ú¿¬±¸¼Ò;°Ç¾ç´ëÇб³ Åä¸ñ½Ã½ºÅÛ°øÇаú;Ãæ³²´ëÇб³ Åä¸ñ°øÇаú;
 
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ÀÚ¿¬ ÇÏõÀ¸·ÎºÎÅÍ È«¼öÀ¯ÃâÀ» ÃßÁ¤ÇÒ °æ¿ì, ¹Ýµå½Ã °í·ÁÇØ¾ß ÇÒ Áß¿äÇÑ ÀÎÀÚµé ÁßÀÇ Çϳª´Â Áöü½Ã°£ÀÌ´Ù. Áöü ½Ã°£Àº Áý¼öÇü»óµð½ºÅ©¸³ÅͷΠǥÇöµÉ ¼ö ÀÖ´Â À¯¿ªÀÇ ÇüÅÂÀû Ư¼ºÀÇ ¿µÇâ¾Æ·¡ ÀÖÀ½ÀÌ Àß ¾Ë·ÁÁ® ÀÖ´Ù. º» ³í¹®¿¡¼­´Â Moussa(2003)¿¡ ÀÇÇÏ¿© Á¦¾ÈµÈ µî°¡Å¸¿øÀÇ ±âÇÏÇÐÀû Ư¼º¿¡ ´ëÇÑ °³³äÀ» À¯¿ª Ãⱸ¿¡ ´ëÇÑ ÁöÇüÇÐÀû ¼ø°£´ÜÀ§µµ (GIUH)ÀÇ Áöü½Ã°£ »êÁ¤¿¡ Àû¿ëÇÑ´Ù. °­¿ì-À¯Ãâ °üÃø ÀÚ·á¿¡ ´ëÇÑ Áöü½Ã°£Àº Nash(1957)°¡ Á¦¾ÈÇÑ Àû·ü¹ýÀ» ÀÌ¿ëÇÏ¿© »êÁ¤Çϰí, GIUH À¯µµ¿¡´Â ÁöÇüÇп¡ ±âÃÊÇÑ ÀýÂ÷°¡ Àû¿ëµÈ´Ù. ±¹³» 3°³ À¯¿ª¿¡ ´ëÇÑ Àû¿ë»ç·Ê¸¦ ÅëÇÏ¿©, À¯¿ªÀÇ ÇüÅÂÀû Ư¼º°ú ¼ö¹®ÇÐÀû ÀÀ´ä»çÀÌÀÇ °ü°è¸¦ °íÂûÇÑ´Ù. ¶ÇÇÑ »ó·ùÁö¿ªÀ¸·ÎºÎÅÍ ÇÏ·ùÁö¿ª±îÁö µî°¡Å¸¿ø Çü»óÀÇ º¯È­¾ç»óÀÌ ½ÃÇèµÈ´Ù. ±× °á°ú, ¼ö¹®ÇÐÀû ÀÀ´äƯ¼º°ú µð½ºÅ©¸³ÅÍ »çÀÌ¿¡´Â ºñ±³Àû ¿ì¼öÇÑ °ü°è°¡ Á¸ÀçÇÔÀÌ È®ÀεǾú°í Ÿ¿øÀÇ Çü»óÀº ÇÏ·ù¹æÇâÀ» µû¶ó ¿øÀÇ ÇüÅ·ΠÁ¢±ÙÇØ °¨À» È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù. º» ¿¬±¸ °á°ú´Â ¹Ì°èÃø À¯¿ªÀ¸·Î È®´ë Àû¿ëÀÌ °¡´ÉÇÒ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù.
The lag time is one of the most important factors for estimating a flood runoff from streams. It is well known to be under the influence of the morphometric properties of basins which could be expressed by catchment shape descriptors. In this paper, the notion of the geometric characteristics of an equivalent ellipse proposed by Moussa(2003) is applied for calculating the lag time of geomorphological instantaneous unit hydrograph(GIUH) at the basin outlet. The lag time is obtained from the observed data of rainfall and runoff by using the method of moments suggested by Nash(1957), and the procedure based on geomorphology is used for GIUH. The relationships between the basin morphometric properties and the hydrological response are discussed as applied to 3 catchments In Korea. Additionally, the shapes of equivalent ellipse are examined how then are transformed from upstream area to downstream one. As a result, the relationship between the hydrological response and descriptors is shown to be comparatively good, and the shape of ellipse is presented to approach a circle along the river downwards. These results may be expanded to the estimation of hydrological response of ungauged catchment.
 
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Áöü½Ã°£;µî°¡Å¸¿ø;Áý¼öÇü»óµð½ºÅ©¸³ÅÍ;lag time;equivalent ellipse;catchment shape descriptor;GIUH;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.38, no.10, 2005³â, pp.801-810
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200507521980304)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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