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Çѱ¹¼öÀÚ¿øÇÐȸ / v.39, no.4, 2006³â, pp.299-311
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ÁöÇϼöÀ§¸¦ ÀÌ¿ëÇÑ ¹°¼öÁöºÐ¼®¹ýÀÇ ¸Å°³º¯¼öÃßÁ¤°ú ÇԾ緮»êÁ¤
( Parameter Estimation of Water Balance Analysis Method and Recharge Calculation Using Groundwater Levels ) |
| ¾ÈÁß±â;ÃÖ¹«¿õ; Çѱ¹³óÃ̰ø»ç Á¦ÁÖµµº»ºÎ ȯ°æÁöÁúÆÀ;°Ç±¹´ëÇб³ À̰ú´ëÇÐ Áö¸®Çаú;
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| º» ³í¹®Àº ºñ»êÃâ·üÀ» ¸ð¸£´Â °üÃøÁ¤¿¡¼ ÁöÇϼöÇԾ緮À» »êÁ¤Çϱâ À§ÇØ ¹°¼öÁöºÐ¼®¹ýÀÇ ¸Å°³º¯¼ö¸¦ ÁöÇϼöÀ§»ó ½Â·®À¸·Î ÃßÁ¤ÇÏ´Â ¹æ¹ýÀ» Á¦½ÃÇϰí, Á¦ÁÖµµ ºÏºÎÁö¿ªÀÇ 2°³ °üÃøÁ¤¿¡ Àû¿ëÇÏ¿´´Ù. ½Ä»ý±Ù°èÀÇ Åä¾ç¿¡ ´ëÇÑ ¹°¼öÁö°¡ ÀÏ´ÜÀ§·Î ºÐ¼®µÇ¾ú´Ù. Á÷Á¢À¯Ãâ¶ûÀº SCS¹æ¹ýÀ¸·Î °è»êÇϰí, ½ÇÁ¦Áõ¹ß»ê·®Àº Penman-Monteith½ÄÀ¸·Î »êÁ¤ÇÑ ÀáÀçÁõ¹ß»ê·®¿¡ ÀÛ¹°°è¼ö¿Í ¼öºÐ½ºÆ®·¹½º°è¼ö¸¦ °öÇÏ¿© »êÁ¤ÇÏ¿´´Ù. °¼ö·®°ú ÀÌÀü Åä¾ç¼öºÐ·®¿¡¼ Á÷Á¢À¯Ãâ·®°ú ÀáÀçÁõ¹ß»ê·®À» Á¦ÇÏ¿´À¸¸ç Åä¾ç¼öºÐº¸À¯´ÉÀ» ÃʰúÇÏ´Â ¼ö·®À» ÁöÇϼöÇÔ¾çÀ¸·Î º¸¾Ò´Ù. SCS À¯Ãâ°î¼±Áö¼ö, Åä¾ç¼öºÐ º¸À¯´É, ÀÛ¹°°è¼ö µîÀÇ ¸Å°³º¯¼ö´Â °¿ì»ç»ó µ¿¾ÈÀÇ ÇԾ緮°ú ÁöÇϼöÀ§»ó½Â·®ÀÇ ¼±Çü°ü°è¸¦ ÀÌ¿ëÇÏ¿© ÃßÁ¤ÇÏ¿´´Ù. °üÃøÁ¤ÀÌ À§Ä¡ÇÑ ÁöÁ¡¿¡¼ ÃâÇö°¡´ÉÇÑ ºñ»êÃâ·üÀÇ ÃÖ´ëÇѰ谪($n_m$)À» °¼ö·®°ú ÁöÇϼöÀ§»ó½Â·® °ü°è·ÎºÎÅÍ À¯µµÇÏ¿´´Ù. °üÃøµÈ ÁöÇϼöÀ§»ó½Â·®°ú ÇԾ緮 °è»ê°ªÀÇ ¼±Çü°ü°è·ÎºÎÅÍ ºñ»êÃâ·ü°ú °áÁ¤°è¼ö($R^2$)¸¦ »êÁ¤Çϰí, °è»êµÈ ºñ»êÃâ·üÀÌ ÃÖ´ëÇѰ谪($n_m$)À̳»¿¡ À§Ä¡Çϸç $R^2$ÀÌ °¡Àå Å« ¸Å°³º¯¼ö°ªÀ» ¸ðÀǸ¦ ÅëÇÏ¿© ¼±Á¤ÇÏ¿´´Ù. »ç·ÊÁö¿ª¿¡ Àû¿ëÇÑ °á°ú ÃßÁ¤µÈ ¸Å°³º¯¼ö·Î »êÁ¤ÇÑ ÇԾ緮ÀÌ ÁöÇϼöÀ§»ó½Â·®ÀÇ º¯µ¿À» 81%ÀÌ»ó ¼³¸íÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³ª ÁöÇϼöÀ§ ÀÚ·á´Â ÁöÇϼöÇԾ緮 »êÁ¤À» À§ÇÑ ¹°¼öÁöºÐ¼®¹ýÀÇ ¸Å°³º¯¼ö ÃßÁ¤¿¡ À¯¿ëÇÑ °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù. |
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| In this paper it is outlined the methodology of estimating the parameters of water balance analysis method for calculating recharge, using ground water level rises in monitoring well when values of specific yield of aquifer are not available. This methodology is applied for two monitoring wells of the case study area in northern area of the Jeiu Island. A water balance of soil layer of plant rooting zone is computed on a daily basis in the following manner. Diect runoff is estimated by using SCS method. Potential evapotranspiration calculated with Penman-Monteith equation is multiplied by crop coefficients($K_c$) and water stress coefficient to compute actual evapotranspiration(AET). Daily runoff and AET is subtracted from the rainfall plus the soil water storage of the previous day. Soil water remaining above soil water retention capacity(SWRC) is assumed to be recharge. Parameters such as the SCS curve number, SWRC and Kc are estimated from a linear relationship between water level rise and recharge for rainfall events. The upper threshold value of specific yield($n_m$) at the monitoring well location is derived from the relationship between rainfall and the resulting water level rise. The specific yield($n_c$) and the coefficient of determination ($R^2$) are calculated from a linear relationship between observed water level rise and calculated recharge for the different simulations. A set of parameter values with maximum value of $R^2$ is selected among parameter values with calculated specific yield($n_c$) less than the upper threshold value of specific yield($n_m$). Results applied for two monitoring wells show that the 81% of variance of the observed water level rises are explained by calculated recharge with the estimated parameters. It is shown that the data of groundwater level is useful in estimating the parameter of water balance analysis method for calculating recharge. |
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| Ű¿öµå |
| ¹°¼öÁöºÐ¼®¹ý;¸Å°³º¯¼öÃßÁ¤;ÁöÇϼöÇԾ緮;ÁöÇϼöÀ§»ó½Â·®;Water Balance Analysis Method;Parameter Estimation;Groundwater Recharge;Groundwater Level Rise; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.39, no.4, 2006³â, pp.299-311
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200624717903751)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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