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- 주제어 : Uplift-subsidence (검색결과 4 건)
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Nak-Youl Ko,Kyung-Woo Park 한국방사성폐기물학회 2023 한국방사성폐기물학회 학술논문요약집 Vol.21 No.2
For the performance and safety assessments of deep geological disposal, developing scenarios, which represent possible long-term changes in the surface environment, is required. These scenarios are formulated using a list of FEPs (Features, Events, and Processes) that describes characteristics of disposal system components. In this study, using international FEP (IFEP) list from OECD/NEA, the individual FEPs related to uplift-subsidence and erosion-deposition were analyzed, and the correlation between each FEP was evaluated. From the IFEP list, the elements related to uplift-subsidence and erosion-deposition processes that cause long-term changes in the surface environment were identified. Uplift-subsidence, erosion - deposition, and the long-term change factors caused by them were analyzed and a correlation diagram was produced according to their interactions. Basis for the integrated analysis of long-term changes in the surface environment and the construction of long-term change scenarios were established considering the evaluation of the factors that cause uplift-subsidence and erosiondeposition, and their correlation with the hydrology-hydrogeology, topography and local climate of the affected surface. The results of this study will be used for systematically formulating scenarios of long-term changes in the surface environment due to uplift-subsidence and erosion-deposition based on natural phenomena. And, it may be necessary to modify and supplement the correlation of domestic FEPs based on the correlation diagram of IFEPs in order to analyze long-term changes in the surface environment in an integrated manner.
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Nak-Youl Ko,Kyung-Woo Park 한국방사성폐기물학회 2023 한국방사성폐기물학회 학술논문요약집 Vol.21 No.1
Performance and safety assessments for deep geological disposal are often conducted over a longterm time scale, such as from hundreds of thousands to a million years. During this period, it is expected that the surface environment will be changed significantly. Uplift-subsidence and erosion-deposition are thought to be included as the main causes of the changes, and it is necessary to evaluate their expected effects. In this study, the conceptual processes of the changes in the surface environment components were to be presented by identifying the uplift-subsidence and erosion-deposition processes and analyzing their effect on the surface environment components. For inferring the long-term change process of the surface environment due to the internal activities of the Earth, the process of uplift and subsidence caused by crustal movements that change the subsurface environment through the deep and sallow underground was briefly presented in the form of a chain flowchart. Uplift-subsidence is mainly caused by diastrophism due to tectonic movement, such as subduction at the boundary of plates. They can change the geomorphology by affecting sealevel change and erosion-deposition. The changed geographical features have an influence on the distribution of surface water and the flow path of groundwater. They also have an impact on the scale and processes of local uplift and erosion, which can be the main factors of pedogenesis and vegetation in the local site. The results of this study can be helpful for formulating scenarios related to long-term evolution in the surface environment required for performance and safety assessments of deep geological disposal.
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한정상(Jeongsang Hahn),윤운상(Yun Sang Yoon),김영식(Youngseek Kiem),한찬(Chan Hahn),박유철(Yu-Chul Park),목종구(Jong-Gu Mok) 한국지열·수열에너지학회 2012 한국지열에너지학회논문집 Vol.8 No.3
Mongolia has three(3) geothermal zones and eight(8) hydrogeothermal systems/regions that are, fold-fault platform/uplift zone, concave-largest subsidence zone, and mixed intermediate-transitional zone. Average temperature, heat flow, and geothermal gradient of hot springs in Arhangai located to fold-fault platform/uplift zone are 55.8℃, 60~110 ㎽/m2 and 35~50 ℃/㎞ respectively and those of Khentii situated in same zone are 80.5℃, 40~50 ㎽/m2, and 35~50 ℃/㎞ separately. Temperature of hydrothermal water at depth of 3,000 m is expected to be about 173~213°C based on average geothermal gradient of 35~50 ℃/㎞. Among eight systems, Arhangai and Khentii located in A type hydrothermal system, Khovsgol in B type, Mongol Altai plateau in C type, and Over Arhangai in D type are the most feasible areas to develop geothermal power generation by Enhanced Geothermal System (EGS). Potential electric power generation by EGS is estimated about 2,760 ㎾ at Tsenher, 1,752 ㎾ at Tsagaan Sum, 2,928 ㎾ at Khujir, 2,190 ㎾ at Baga Shargaljuut, and 7,125 ㎾ at Shargaljuut.
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