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Çѱ¹ÇÏõȣ¼öÇÐȸ / v.37, no.2, 2004³â, pp.205-212
¾Æ½Ã¾Æ ¸ó¼øÁö¿ªÀÇ ´ëÇü´ï(¼Ò¾çÈ£)¿¡¼­ÀÇ ÀμøÈ¯°ú 2Â÷¿ø¸ðµ¨ÀÇ Àû¿ë
( Phosphorus Cycle in a Deep Reservoir in Asian Monsoon Are3 (Lake Soyang, Korea) and the Modeling with a 2-D Hydrodynamic Water Quality Model [CE-QUAL-W2] )
±èÀ±Èñ;±è¹üö; °­¿ø´ëÇб³ ÀÚ¿¬°úÇдëÇРȯ°æÇаú;°­¿ø´ëÇб³ ÀÚ¿¬°úÇдëÇРȯ°æÇаú;
 
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¾Æ½Ã¾Æ ¸ó¼øÁö¿ª¿¡¼­ ´ëÇü´ïÀÇ ÀμøÈ¯(phosphorus cycle)°úÁ¤ÀÇ Æ¯Â¡À» ÆÄ¾ÇÇϱâ À§ÇÏ¿© ¼Ò¾çÈ£¸¦ ´ë»óÀ¸·Î ÀμøÈ¯ °úÁ¤À» Á¶»çÇÏ¿´´Ù. ¶ÇÇÑ, À̸¦ ¸ðÀÇÇϱâ À§ÇØ 2Â÷¿ø ¼öÁú¸ðµ¨ÀÎ CE-QUAL-W2¸¦ Àû¿ëÇÏ¿© ¼öÁß»ýŰèÀÇ ¹°Áú¼øÈ¯°úÁ¤À» ¸ðÀÇÇÏ¿´´Ù. ¼Ò¾çÈ£´Â ¼ö½ÉÀÌ ±í°í¼ºÃþÀÌ °­ÇÏ¿© ¼öÁ÷ÀûÀÎ º¯À̰¡ ¶Ñ·ÇÇÑ ÀÎÀÇ ºÐÆ÷¸¦ º¸¿´´Ù. ÀÎÀÇ ºÎÇÏ·®Àº À¯¿ª¸éÀûÀÇ 90%¸¦ Â÷ÁöÇÏ´Â ÁÖÀ¯ÀÔÇÏõÀÎ ¼Ò¾ç°­ÀÇ Àγ󵵸¦ ÃøÁ¤ÇÏ¿© »êÁ¤ÇÏ¿´´Ù. ¼Ò¾ç°­ÀÇ Àγ󵵴 °­¿ì½Ã À¯·® Áõ°¡¿¡ µû¶ó Å©°Ô Áõ°¡ÇÏ´Â º¯µ¿À» º¸¿´À¸¹Ç·Î ÀÎÀÇ ºÎÇÏ·®Àº °£ÇæÀûÀ¸·Î ¹ß»ýÇÏ´Â Æø¿ì À¯Ãâ¿¡ ÁýÁߵǾú´Ù. Æø¿ì½Ã À¯Ãâ¼ö´Â ¼ö¿ÂÀÌ ³·¾ÆÁö±â ¶§¹®¿¡ È£¼öÀÇ ÁßÃþÀ¸·Î Àá·ùÇÏ¿© ÁßÃþ ʼö´ë¸¦ Çü¼ºÇÏ´Â °ÍÀ¸·Î °üÃøµÇ¾ú´Ù. ¿©¸§ ¿ì±â°¡ ³¡³­ ÈÄ ÁßÃþ¿¡´Â µÎ²² 20${sim}$30mÀÇ ÀÎÇÔ·®ÀÌ ³ôÀº ʼöÃþÀÌ Çü¼ºµÇ¾úÀ¸¸ç ÀÌŹ¼öÃþÀº ´ï Áß°£¼ö½É¿¡ ¸¸µé¾îÁø ¹ßÀü¹æ·ù±¸¸¦ ÅëÇÏ¿© ¼­¼­È÷ ¹æ·ùµÇ¾ú´Ù. CE-QUAL-W2 ¸ðµ¨Àº È£¿ì½Ã ʼöÀÇ Àá·ùÇö»ó°ú ÀÎÇÔ·®ÀÌ ³ôÀº ÁßÃþÀÇ Çü¼º, ÀÎÀÇ ¼öÆò¼öÁ÷ºÐÆ÷ µîÀÇ ÀμøÈ¯ °úÁ¤ÀÌ Àß ¸ðÀÇ ÇÏ¿©,¾Æ½Ã¾Æ ¸ó¼øÁö¿ªÀÇ ´ï¿¡¼­ ¼öÁú¸ðµ¨·Î¼­ À°¼öÇÐÀû Çö»óÀ» Àß ¸ðÀÇÇÏ´Â °ÍÀ¸·Î Æò°¡µÈ´Ù.
Phosphorus cycle was studied in a deep stratified reservoir in summer monsoon area (Lake Soyang, Korea) by surveying phosphorus input from the watershed and the movement of phosphorus within the reservoir. And the spatial and temporal distribution of phosphorus was modeled with a 2-dimensional water quality model (CE-QUAL-W2), Phosphorus loading was calculated by measuring TP in the main inflowing river (the Soyang River) accounting for 90% of watershed discharge. TP of the Soyang River showed a large daily variation with the flow rate. High phosphorus loading occurred during a few episodic storm runoff laden with suspended sediments and phosphorus. Because storm runoff water on rainy days have lower temperature, it plunges into a depth of same temperature (usually below 20m depth), forming an intermediate turbidity layer with a thickness of 20 ${sim}$ 30 m. Because of stable thermal stratification in summer the intermediate layer water of high phosphorus content was discharged from the dam through a mid-depth outlet without diffusing into epilimnion. The movement of runoff water within the reservoir, and the subsequent distribution of phosphorus were well simulated by the water quality model showing a good accuracy. The major parameter for the calibration of phosphorus cycle was a settling velocity of detritus, which was calibrated to be 0.75 m ${cdot}$ $day^{-1}$. It is concluded that the model can be a good simulator of limnological phenomena in reservoirs of summer monsoon area.
 
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CE-QUAL-W2;Lake Soyang;phosphorus cycle;storm runoff;water quality modeling;
 
Çѱ¹ÇÏõȣ¼öÇÐȸÁö / v.37, no.2, 2004³â, pp.205-212
Çѱ¹ÇÏõȣ¼öÇÐȸ
ISSN : 1976-8087
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200418317182840)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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