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Çѱ¹¼öÀÚ¿øÇÐȸ / v.41, no.6, 2008³â, pp.559-564
ÆòȰȭµÈ ¹«Â÷¿ø ´ÜÀ§ÇÙÇÔ¼ö¸¦ ÀÌ¿ëÇÑ ´ÜÀ§µµÀÇ À¯µµ
( A Derivation of a Hydrograph by Using Smoothed Dimensionless Unit Kernel Function )
¼º±â¿ø; °Ç±¹´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;
 
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º» ¿¬±¸¿¡¼­´Â º¹ÇÕ °­¿ì»ç»óÀ¸·ÎºÎÅÍ ´ÜÀ§µµ¿Í S-°î¼±À» µµÃâÇÏ´Â ½Ç¿ëÀûÀÎ ¹æ¹ýÀ» °­±¸ÇÏ¿´´Ù. ÀÌ ¿¬±¸¿¡¼­ ÀÌ¿ëµÈ ´ÜÀ§ÇÙÇÔ¼ö´Â ´ÜÀ§µµ¿Í S-°î¼±À» À¯µµÇϴµ¥ À־ ±âÁ¸ÀÇ ¹æ¹ýº¸´Ù Æí¸®ÇÏ´Ù. ±×·¯³ª ½ÇÁ¦ ÀڷḦ ºÐ¼®ÇÒ ¶§ ´ÜÀ§ÇÙÇÔ¼ö´Â Áøµ¿À» º¸ÀÌ°í ºÒ¾ÈÁ¤Çϱ⠶§¹®¿¡ ´ÜÀ§µµ¿Í S-°î¼± µµÃâ¿¡ À־ Àå¾Ö°¡ ÀÖ´Ù. ±×·±µ¥ ´ÜÀ§ÇÙÇÔ¼öÀÇ ¿ä¼ÒÀÎ Nash ÀÇ ¼ø°£´ÜÀ§µµ¸¦ ÃßÁ¤ÇÔ¿¡ À־ Laplacian Çà·ÄÀ» ÀÌ¿ëÇÑ ´ÉÇüȸ±ÍºÐ¼®À» ÀÌ¿ëÇÏ¸é »ç»ó¿¡ ´ëÇÑ Æò±ÕÀûÀÎ ´ÜÀ§ÇÙÇÔ¼ö¸¦ ±¸Çϴµ¥ À¯ÀÍÇÔÀ» ¹ß°ßÇÏ¿´´Ù. ¶ÇÇÑ À̸¦ ÀÌ¿ëÇÏ¿© ´ÜÀ§µµÀÇ Áö¼Ó±â°£ º¯°æµµ °¡´ÉÇÏ¿´´Ù. ÀÌ ¿¬±¸¿¡¼­ Á¦½ÃµÈ ¹æ¹ý·ÐÀº ´ÜÀ§µµ Á¦ÀÛ¿¡ ÀûÁö ¾ÊÀº µµ¿òÀÌ µÉ °ÍÀ¸·Î ±â´ëÇÑ´Ù.
A practical method is derived for determining the unit hydrograph and S-curve from complex storm events by using a smoothed unit kernel approach. The using a unit kernel yields more convenient way of constructing a unit hydrograph and its S-curve than a conventional method. However, with use of real data, the unit kernel oscillates and is unstable so that a unit hydrograph and S-curve cannot easily obtained. The use of non-parametric ridge regression with a Laplacian matrix is suggested for deriving an event averaged unit kernel which reduces the computational efforts when dealing with the Nash instantaneous unit hydrograph as a basis of the kernel. A method changing the unit hydrograph duration is also presented. The procedure shown in this work will play an efficient role when any unit hydrograph works is involved.
 
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´ÜÀ§µµ;´ÜÀ§ÇÙÇÔ¼ö;´ÉÇüȸ±ÍºÐ¼®;Nash ¸ðÇü;Unit hydrograph;unit kernel;ridge regression;Nash model;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.41, no.6, 2008³â, pp.559-564
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200819160171500)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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