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| Titel |
Comparative study on change in groundwaters of rural and urban areas in Korea: effects of climate change |
| VerfasserIn |
Sang Woong Yun, Ye Seul Kim, Dong Hyun Kim, Ho Chul Kim, Min Cheol Shin, Jae Yong Park, Heejung Kim, Jin-Yong Lee |
| Konferenz |
EGU General Assembly 2013
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250075099
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| Zusammenfassung |
| Groundwater occupies a considerable proportion of the world’s water resources and is
affected by climate change. It is important to understand how water budget responds to future
precipitation variability for sustainable management of groundwater resources. In order to
evaluate the effects of climate change on groundwater resources in the future, it is necessary
to not only collect field data but also predict groundwater change using some groundwater
numerical modelling. In this study, a relevant climate change scenario (RCP 4.5)
was adopted and Visual MODFLOW was used as a main tool for predicting water
budget. The predicted precipitation and air temperature data were obtained from
Climate Change Information Center (CCIC) of Korea. By using the data on the
scenario from 2011 to 2100, the future water budget was calculated using groundwater
numerical modelling for both Wonju (WJ: urban area) and Yanggu (YG: rural area) of
Gangwon Province in Korea. The model calibration was done by the groundwater level
measured at 10 monitoring wells. For the numerical prediction, the groundwater
recharge (WJ: 10.1%, YG: 13.3%) was estimated using watertable fluctuation (WTF)
method and a concept of threshold precipitation (WJ: 240.5 mm, YG: 363.8 mm)
was applied. Consequently, the water levels in both Wonju and Yanggu showed
gradually increasing trends and ranged from 3.0 to 10.8 m, from 0.5 to 1.8 m in 2100,
respectively. Under annual precipitation fluctuation on the scenario (2011-2100),
water budget IN-OUT value (-0.87~1.07 m3/day) in Wonju city gradually increases
while that (-0.73~0.46 m3/day) of Yanggu county does not. However, its annual
difference is enlarged with year for both areas. The results indicate that securing
groundwater resource and its management will be difficult because of frequent annual
change of the groundwater storage. This work was supported by Science High School
R&E program (No. C1008804-01-01) and the National Research Foundation of
Korea (NRF) grant funded by the Korea government (MEST) (No. 2012-0002628). |
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