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Çѱ¹¼öÀÚ¿øÇÐȸ / v.29, no.4, 1996³â, pp.199-208
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Áö¸®Á¤º¸½Ã½ºÅÛÀ» ÀÌ¿ëÇÑ À¯¿ª¿¡¼ÀÇ ÁöÇüÁö¼ö »êÁ¤
( Calculation of Watershed Topographic Index with Geographic Information System ) |
| ±è»óÇö;ÇѰǿ¬; ¹Ì±¹ Purdue ´ëÇб³ Åä¸ñ°øÇаú Research Assistant;°æºÏ´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;
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| Æ÷ȵµÀÇ °ø°£Àû º¯ÈÀÎ ÁöÇüÁö¼ö¸¦ °è»êÇϱâ À§ÇÑ ´ÙÁßÈ帧À» ¾Ë°í¸®ÁòÀÌ ÁöÇüÁ¤º¸½Ã½ºÅÛÀÎ GRASS¿Í ¿¬°èµÇ¾î °³¹ßµÇ¾ú´Ù. º» ¿¬±¸´Â 3.4$ extrm{km}^2$ÀÇ ¼Ò³ó°æÁö ¹è¼ö±¸¿ª¿¡ ´ëÇÏ¿© Àû¿ëÇÏ¿´´Ù. ÁöÇϼöÀ§¿¡ ´ëÇÑ Å¸ÀÏ ½Ã½ºÅÛÀÇ ¿µÇâÀÌ DEM ¸ðÇü°ú Laplace½Ä¿¡ ÀÇÇØ¼ È¿°úÀûÀ¸·Î °í·Á µÉ ¼ö ÀÖ¾ú´Ù. º» ¿¬±¸°á°ú, ŸÀÏ ½Ã½ºÅÛÀ» °í·ÁÇÑ À¯¿ªÀº ŸÀÏ ½Ã½ºÅÛÀ» °í·ÁÇÏÁö ¾ÊÀº °æ¿ì¿Í ºñ±³ÇÏ¿© ³ôÀº Æ÷ȵµ¸¦ °¡Áö°í ÀÖ´Â °ÍÀ¸·Î ³ªÅ¸³µÀ¸¸ç, ¿¹ÃøµÈ riparian À¯¿ªÀº ½ÇÁ¦ÀÇ À¯¿ªÁ¶°Ç°ú Àß ÀÏÄ¡µÇ°í ÀÖ¾ú´Ù. º» ¿¬±¸¿¡¼´Â ÁöÇüÁö¼ö¸¦ »êÁ¤ÇÔ¿¡ ÀÖ¾î ŸÀÏ ½Ã½ºÅÛÀÇ È¿°ú¸¦ °í·ÁÇØ¾ß ÇÔÀ» Á¦¾ÈÇÏ¿´´Ù. |
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| The multiple flow direction algorithm to calculate the spatial variation of the saturation tendency, i.e. topographic index, is integrated into the Geogrphic Information System, GRASS. A procedure is suggested to consider the effect of a tile system on calculating the topographic index. A small agricultural subwatershed (3.4$ extrm{km}^2$) is used for this study. The impact of a tile system on the groundwater table can be effectively considered by the Laplace's equation to the DEM. The analysis shows that a tile system has a high degree of saturation compared to the case without tile drainage, and the predicted riparian area is well fitted to the actual watershed condition. A procedure is suggested to consider the effect of tile system on calculating the topographic index. |
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Çѱ¹¼öÀÚ¿øÇÐȸÁö / v.29, no.4, 1996³â, pp.199-208
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1738-9488
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199611920097591)
¾ð¾î : ¿µ¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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