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Çѱ¹¼öÀÚ¿øÇÐȸ / v.43, no.11, 2010³â, pp.995-1009
ºÐÆ÷Çü ¼ö¹®¸ðÇüÀ» ÀÌ¿ëÇÑ Ä§½Ä ¹× ÅðÀûÀÇ ½Ã.°ø°£ º¯µ¿¼º ºÐ¼®
( Analysis on Spatiotemporal Variability of Erosion and Deposition Using a Distributed Hydrologic Model )
À̱âÇÏ;À¯¿Ï½Ä;Àåâ·¡;Á¤°ü¼ö; Ãæ³²´ëÇб³ °Ç¼³¹æÀ翬±¸¼Ò;Ãæ³²´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;ÃæÁÖ´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;Ãæ³²´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;
 
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±âÈĺ¯È­¿¡ ÀÇÇØ ÁýÁßÈ£¿ìÀÇ ºóµµ ¹× °­µµ°¡ Áõ°¡Çϰí Áö¼ÓÀûÀÎ À¯¿ª°³¹ß¿¡ µû¸¥ ÅäÁöÀÌ¿ëÀÇ Áõ°¡´Â Åä¾çħ½Ä ¹× Åä»çÀ¯Ãâ·Î ÀÎÇÑ ÀçÇØ ¹× ȯ°æ¹®Á¦¸¦ ¾ß±âÇÑ´Ù. ÇöÀç ±¤¹üÀ§ÇÏ°Ô »ç¿ëµÇ°í ÀÖ´Â Åä¾çħ½Ä·® »êÁ¤±â¹ýÀº ´ëºÎºÐ ´ë»óÀ¯¿ª³»ÀÇ Æò±Õ Åä¾çħ½Ä·®À» »êÃâÇÏ´Â ÃÑ·®Àû °³³äÀÇ °æÇè½ÄÀ̹ǷΠȣ¿ì±â°£µ¿¾ÈÀÇ Ä§½Ä ¹× ÅðÀûÀÇ ½Ã °ø°£Àû º¯È­¾ç»óÀ» ¸ðÀÇÇÒ ¼ö ¾ø´Ù´Â ÇѰ踦 Áö´Ï°í ÀÖ´Ù. µû¶ó¼­ º¸´Ù ÇÕ¸®ÀûÀÎ À¯¿ª±Ô¸ðÀÇ °­¿ì-À¯»ç-À¯Ãâ ¸ÞÄ«´ÏÁò ÇØ¼®À» À§Çؼ­´Â ±âÁ¸ÀÇ ÁýÁßÇü ¸ðÀDZâ¹ýÀ» ´ëüÇÏ°í ´Ù¾çÇÑ ±â»óÇÐÀû/ÁöÇüÇÐÀû Á¤º¸¸¦ Ȱ¿ëÇÒ ¼ö ÀÖ´Â ¹°¸®Àû ±â¹ÝÀÇ ºÐÆ÷Çü ¸ðÇüÀÌ ¿ä±¸µÈ´Ù. º» ¿¬±¸¿¡¼­´Â »ç¸éÀÇ ÁöÇ¥ ¹× ÁöÇ¥ÇÏ È帧À» °í·ÁÇÑ À¯Ãâ¸ðÀÇ ¸ðµâ°ú ´ÜÀ§¼ö·ù·Â ÀÌ·ÐÀ» ±â¹ÝÀ¸·Î ÇÏ´Â À¯»çÀ¯Ãâ ¸ðÀǸðµâÀ» °áÇÕÇÑ ºÐÆ÷Çü °­¿ì-À¯»ç-À¯Ãâ ¸ðÇüÀ» È®Àå°³¹ßÇϰí, ¿ë´ã´ï »ó·ùºÎÀÇ ÃµÃµÀ¯¿ª¿¡ Àû¿ëÇÏ¿© ¸ðÇüÀÇ ÀçÇö¼º Æò°¡¸¦ ¼öÇàÇÏ¿´´Ù. ¼ö¹®°î¼±ÀÇ ¸ðÀÇ °á°ú ¸ðÇüÀÇ ÀçÇö¼ºÀº ¿ì¼öÇÏ¿´À¸¸ç, À¯»ç·®°î¼±ÀÇ °æ¿ì ÷µÎºÎºÐ¿¡¼­ °ú¼Ò¼±Á¤µÇ´Â °æÇâÀÌ ³ªÅ¸³µ´Ù. ¶ÇÇÑ, ÁöÇ¥¸é À¯µ¿°Å¸® ¹× ±¹ºÎ°æ»ç¿¡ µû¸¥ ħ½Ä ¹× ÅðÀûÀÇ °ø°£ºÐÆ÷¸¦ ºÐ¼®ÇÑ °á°ú, ħ½ÄµÈ Åä»ç´Â ºñ±³Àû °æ»ç°¡ ¿Ï¸¸ÇÑ ÇÏõÁÖº¯¿¡ ÅðÀûµÇ¾úÀ¸¸ç, °­¿ì·®°ú ħ½Ä ¹× ÅðÀûÀÇ °ø°£ºÐÆ÷ÀÇ ºÐ¼®°á°ú, °­¿ì·®ÀÇ Áõ°¡¿¡ µû¶ó ħ½Ä·®ÀÌ Áõ°¡ÇÏ¿´À¸¸ç, Thiessen¸Á À¯¿ªº°·Î ħ½Ä ¹× ÅðÀû ºÐÆ÷´Â »óÀÌÇÏ°Ô ³ªÅ¸³µ´Ù.
Accelerated soil erosion due to extreme climate change, such as increased rainfall intensity, and human-induced environmental changes, is a widely recognized problem. Existing soil erosion models are generally based on the gross erosion concept to compute annual upland soil loss in tons per acre per year. However, such models are not suitable for event-based simulations of erosion and deposition in time and space. Recent advances in computer geographic information system (GIS) technologies have allowed hydrologists to develop physically based models, and the trend in erosion prediction is towards process-based models, instead of conceptually lumped models. This study aims to propose an effective and robust distributed rainfall-sediment yield-runoff model consisting of basic element modules: a rainfall-runoff module based on the kinematic wave method for subsurface and surface flow, and a runoff-sediment yield-runoff model based on the unit stream power method. The model was tested on the Cheoncheon catchment, upstream of the Yongdam dam using hydrological data for three extreme flood events due to typhoons. The model provided acceptable simulation results with respect to both discharge and sediment discharge even though the simulated sedigraphs were underestimated, compared to observations. The spatial distribution of erosion and deposition demonstrated that eroded sediment loads were deposited in the cells along the channel network, which have a short overland flow length and a gentle local slope while the erosion rate increased as rainfall became larger. Additionally, spatially heterogeneous rainfall intensity, dependant on Thiessen polygons, led to spatially-distinct erosion and deposition patterns.
 
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Åä¾çħ½Ä;°­¿ì-À¯»ç-À¯Ãâ ¸ðÇü;´ÜÀ§¼ö·ù·Â;ħ½Ä ¹× ÅðÀûÀÇ °ø°£ºÐÆ÷;soil erosion;rainfall-sediment yield-runoff model;unit stream power;spatial distribution of erosion and deposition;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.43, no.11, 2010³â, pp.995-1009
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201001039068366)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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