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| 099 | 9 | _aAIT Thesis no.WM-23-07 | |
| 100 | 1 | _aBhusal, Salik | |
| 245 | 1 | 0 | _aAssessment of climate change impact on hydrology, floodplain inundation, and groundwater resources in the Lancang Mekong River Basin |
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_aPathum Thani, Thailand : _bAsian Institute of Technology, _c2023 |
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_a141 leaves : _bill. |
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_aThesis; _vno. WM-23-07 |
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| 500 | _aA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Water Engineering and Management | ||
| 502 | _aThesis (M. Eng.) - Asian Institute of Technology, 2023 | ||
| 520 | _aThe Lancang Mekong River Basin is not only a vital water resource system supporting the livelihoods of millions of people, but it is also one of the most diverse ecosystems in the world, supporting a wide range of flora and fauna. The hydrological regime of the river is expected to undergo significant alterations due to climate change, leading to potential water scarcity and flood hazards in the region. In this context, this study aimed investigating the potential impact of climate change on the streamflow and groundwater recharge in Lancang Mekong River Basin and flood hazard potential in Cambodian Mekong floodplain. The study was carried out employing three CMIP6 climate models namely ACCESS-CM2, BCC-CSM2-MR and ECEarth3 selected from performance evaluation of eight GCMs under SSP2-4.5 and SSP5-8.5 scenarios. Soil and Water Assessment Tool (SWAT) hydrological model was developed to assess the impact of climate change on hydrology in the basin in terms of annual and monthly variability of river discharge, changes in high and low flows and groundwater recharge. The results indicated that the hydrological regime of the river is expected to undergo significant changes in the future, with an overall increase in average annual streamflow and groundwater recharge in the basin exhibiting spatial variability in magnitude of change. MIKE FLOOD model was developed for Cambodian Mekong floodplain to investigate the potential impact of climate change on flood hazard in the Cambodian Mekong floodplain. The results signaled an increased streamflow will exacerbate flood hazard in the floodplain in the coming future due to climate change. Moreover, the study also explored the influence of flooding on groundwater resource in the Cambodian Mekong floodplain using GMS-MODFLOW groundwater model. The Mekong River during flooding season is one of the major sources of recharge to the floodplain groundwater aquifer and receives water from the groundwater during dry season. This contribution to floodplain groundwater aquifer recharge during the flooding season is projected to increase in the near future. | ||
| 650 | 0 |
_aClimatic changes _zLancang Mekong River Basin |
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| 650 | 0 |
_aHydrology _zLancang Mekong River Basin |
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| 650 | 0 |
_aGroundwater _zLancang Mekong River Basin |
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| 700 | 1 |
_aShrestha, Sangam, _eChairperson |
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| 700 | 1 |
_aShanmugam, Mohana Sundaram, _eCo-Chairperson |
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| 700 | 0 |
_aHo Huu Loc, _eExamination Committee |
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| 710 | 2 |
_aAsian Institute of Technology Scholarships, _eScholarship Donor |
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| 810 | 2 |
_aAsian Institute of Technology. _tThesis; _vno. WM-23-07 |
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| 856 | 4 | 0 |
_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B19201 |
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