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Çѱ¹¼öÀÚ¿øÇÐȸ / v.32, no.6, 1999³â, pp.741-749
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TDR(Time Domain Reflectometry)¸¦ ÀÌ¿ëÇÑ ºñÆ÷È Åä¾ç¿¡¼ õÀÌ»óÅÂÀÇ ¿À¿°¿ø À̼ÛÈ®»ê Ư¼º¿¡ °üÇÑ ¿¬±¸ : (1) ÇÔ¼ö·®°ú »ó´ëÀü±âÀüµµµµÀÇ °ü°è
( Study on Characteristice of Transient Soulte Transport in the Vadose Zone by Using TDR: (1) Relationship between Water Content and Realtive Electrical Conductivity ) |
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| º» ¿¬±¸¿¡¼´Â TDRÀÇ ¹ÝÇâÆÄÀÇ Æ¯¼º°ú ÃÑÅä¾çÀü±âÀüµµµµÀÇ °ü°è¸¦ ÀÌ¿ëÇÑ ºñÆ÷È Åä¾ç¿¡¼ÀÇ ¿ëÁ¸¿À¿°¿ø ³óµµ¸¦ ÃøÁ¤ÇÏ´Â ¹æ¹ýÀ» °³¹ßÇÏ¿´´Ù. º» ¿¬±¸¿¡¼ Á¦¾ÈÇÑ ¹æ¹ýÀº µÎ °¡Áö Áß¿äÇÑ °ü°è¸¦ °áÇÕÇÑ °ÍÀ¸·Î ù ¹øÂ°´Â ÇÔ¼ö·®ÀÌ ÀÏÁ¤ÇÒ °æ¿ì Àü±âÀüµµµµ¿Í Åä¾ç¼ö ³óµµ´Â ¼±Çü°ü°è¸¦ À¯ÁöÇÑ´Ù´Â °ÍÀ̸ç, µÎ ¹øÂ°´Â õÀÌ»óÅÂÀÇ ¿ëÁ¸¿©¿°¿øÀÇ ³óµµ¸¦ ÃøÁ¤ÇÒ ¼ö ÀÖ°Ô Çϱâ À§ÇØ ÇÔ¼ö·®°ú Àü±âÀüµµµµÀÇ °ü°è¸¦ ¼³Á¤ÇÏ´Â °ÍÀÌ´Ù. ÇÔ¼ö·®°ú Àü±âÀüµµµµÀÇ °ü°è¸¦ ÃßÁ¤ÇÏ´Â ½ÄµéÀÌ ¿©·¯ ¿¬±¸Àڵ鿡 ÀÇÇÏ¿© Á¦¾ÈµÇ¾úÀ¸³ª, º» ¿¬±¸¿¡¼´Â ÃøÁ¤ÀÇ Á¤È®µµ¸¦ ³ôÀ̱â À§ÇÏ¿© ÇѰèÇÔ¼ö·®ÀÇ °³³äÀ» µµÀÔÇÑ »õ·Î¿î ÃßÁ¤½ÄÀ» Á¦¾ÈÇÏ¿´´Ù. ÇѰèÇÔ¼ö·® °³³äÀ» ÀÌ¿ëÇÏ¿© ½ÇÇèÀڷḦ ¼±Çü, ºñ¼±Çü ±¸°£À¸·Î ³ª´©¾î ºÐ¼®ÇÏ¿´´Âµ¥, ½ÇÇèÀÚ·áÀÇ ¹Ý¿µÁ¤µµ¸¦ Áõ°¡½Ãų ¼ö ÀÖ¾î º» ¿¬±¸¿¡¼ Á¦¾ÈµÈ ½ÄÀ» ÀÌ¿ëÇÏ¿© ÃßÁ¤µÈ Àü±âÀüµµµµ¿Í ÇÔ¼ö·®°ü°è´Â ´Ù¸¥ Á¦¾È½Ä¿¡ ºñÇÏ¿© °³¼±µÈ °á°ú¸¦ º¸¿© ÁÖ¾ú´Ù. º» ¿¬±¸¿¡¼ Á¦¾ÈµÈ Àü±âÀüµµµµ¿Í ÇÔ¼ö·®°ü°è ÃßÁ¤½ÄÀ» ÀÌ¿ëÇÑ ÃµÀÌ»óÅÂÀÇ ¿À¿°¿ø ³óµµ ÃøÁ¤¹ýÀº ÇÔ¼ö·®ÀÌ ±ÞÇÏ°Ô º¯ÇÏ´Â Åä¾ç¿¡µµ Àû¿ëÇÒ ¼ö ÀÖ´Â ¸Å¿ì À¯¿ëÇÑ ¹æ¹ýÀ¸·Î ÆÇ´ÜµÈ´Ù. |
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| This study is to develop a method of measuring the soil water concentration by using TDR, which is based on the relationships between the bulk soil electrical conductivity of soil and the reflected wave of TDR. The proposed monitoring method is combined with two important relationships. One is that between the bulk soil electrical conductivity and the solute concentration, which is known to be linear at a constant volumetric soil water content and the other is that between the relative bulk soil electrical conductivity and the water content at a constant concentration. Some formulas have been proposed to solve the second relationship, but a new formula and the critical water content are proposed to improve the accuracy of measurement. This proposed formula estimates the relative bulk soil electrical conductivity for water contents which is divided to two regions, linear and nonlinear, by the critical water content. As the result of the comparison with other formulas, the proposed formula is proved to be superior to other formulas and to be an available method to apply to the unsaturated transient solute transport. |
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| ¿À¿°¿ø À̼ÛÈ®»ê;Åä¾çÀü±âÀüµµµµ;ÇѰèÇÔ¼ö·®;solute transport;TDR;soil electrical conductivity;cntical water content; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.32, no.6, 1999³â, pp.741-749
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199911920063445)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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