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Çѱ¹¼öÀÚ¿øÇÐȸ / v.34, no.3, 2001³â, pp.241-251
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¼öÄ¡ °íµµ ºÐ¼® : ºÐÆ÷Çü È帧 ºÐ¹è ¾Ë°í¸®Áò
( A Digital Elevation Analysis : Sparially Distributed Flow Apportioning Algorithm ) |
| ±è»óÇö;±è°æÇö;Á¤¼±Èñ; ºÎ»ê´ëÇб³ ȯ°æ°øÇаú;ºÎ»ê´ëÇб³ ȯ°æ±â¼ú¡¤»ê¾÷°³¹ß¿¬±¸¼¾ÅÍ;Çѱ¹È¯°æÁ¤Ã¥Æò°¡¿¬±¸¿ø;
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| ´ÜÀÏ È帧 ±â¹ý°ú ´Ù¹æÇâ È帧 ±â¹ýÀÇ ÀåÁ¡À» ¼±ÅÃÀûÀ¸·Î °í·ÁÇÏ¿© ±âÁ¸ ¾Ë°í¸®ÁòÀÇ ¾àÁ¡À» º¸¿ÏÇϱâ À§ÇÑ ºÐÆ÷Çü ¼ö¹®¸ðÇüÀÇ È帧 ºÐ¹è ¾Ë°í¸®ÁòÀ» Á¦¾ÈÇÏ¿´´Ù. »ó°æ»ç(upslop) °ÝÀڷκÎÅÍÀÇ ´©Àû ¸éÀûÀ» Á¶ÀýÇϱâ À§ÇØ °ø°£ÀûÀ¸·Î º¯ÈµÈ È帧 ºÐ¹è »ó¼ö°¡ µµÀԵǾú´Ù. ¶ÇÇÑ ½ÇÁ¦ ¼ö·Î¸ÁÀ» Ç¥ÇöÇϱâ À§ÇØ ¼ö·ÎÇü¼º¸éÀû(channel initiation threshold area; CIT) °³³äÀ» È®ÀåÇÏ¿© È帧 ºÐ¹è ¾Ë°í¸®Áò¿¡ °áÇÕ½ÃÄ×´Ù. ½ÇÁ¦ À¯¿ª¿¡ ´ëÇÑ Àû¿ë °á°ú, ¼±ÇüÀûÀ¸·Î ºÐÆ÷µÈ È帧 ºÐ¹è ±â¹ýÀÌ ±âÁ¸ÀÇ Á¢±Ù¹æ¹ý¿¡ ´ëÇÑ ¸î°¡Áö ÀåÁ¡À» º¸¿´´Âµ¥, ¿¹¸¦ µé¾î ¼ö·Î ±Ùó °ÝÀÚ¿¡¼ÀÇ °ú´ÙÇÑ È帧 ºÐ»ê ¹®Á¦ÀÇ ¿ÏÈ, ¼ö·Î °ÝÀÚÀÇ ¿¬°á¼º, Æ÷ȸéÀûÀÇ ¿¬¼Ó¼º°ú ±âÁ¸ ¾Ë°í¸®Áò¿¡¼ÀÇ ¸Å°³º¯¼ö º¸Á¤ÀÇ ¹«½Ã¿Í °°Àº °ÍÀÌ´Ù. ±×¸®°í °ÝÀÚ Å©±âÀÇ ¿µÇâÀÌ Åë°èÀûÀ¸·Î »Ó¸¸¾Æ´Ï¶ó °ø°£ÀûÀ¸·Î °ËÅäµÇ¾ú´Ù. |
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| A flow determination algorithm is proposed for the distributed hydrologic model. The advantages of a single flow direction scheme and multiple flow direction schemes are selectively considered to address the drawbacks of existing algorithms. A spatially varied flow apportioning factor is introduced in order to accommodate the accumulated area from upslope cells. The channel initiation threshold area(CIT) concept is expanded and integrated into the spatially distributed flow apportioning algorithm in order to delineate a realistic channel network. An application of a field example suggests that the linearly distributed flow apportioning scheme provides some advantages over existing approaches, such as the relaxation of over-dissipation problems near channel cells, the connectivity feature of river cells, the continuity of saturated areas and the negligence of the optimization of few parameters in existing algorithms. The effects of grid sizes are explored spatially as well as statistically. |
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| Ű¿öµå |
| È帧 ºÐ¹è;ÁöÇüÁö¼ö;CIT; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.34, no.3, 2001³â, pp.241-251
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200111920731439)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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