Decision-Making Methodology for Risk Management Applied to Imja Lake in Nepal
| Autor: | Daene C. McKinney, Amanda D. Cuellar |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
lcsh:Hydraulic engineering
010504 meteorology & atmospheric sciences Cost estimate 0208 environmental biotechnology Geography Planning and Development glacial lake outburst flood Glacial lake outburst flood 02 engineering and technology Aquatic Science 01 natural sciences Biochemistry risk management decision making lcsh:Water supply for domestic and industrial purposes Imja Lake Agricultural land lcsh:TC1-978 Environmental planning Risk management 0105 earth and related environmental sciences Water Science and Technology Valuation (finance) Hydrology decision analysis lcsh:TD201-500 business.industry Flooding (psychology) 020801 environmental engineering Environmental science data envelopment analysis Glacial lake business Decision analysis |
| Zdroj: | Water, Vol 9, Iss 8, p 591 (2017) Water; Volume 9; Issue 8; Pages: 591 |
| ISSN: | 2073-4441 |
| Popis: | Glacial retreat causes the formation of glacier lakes with the potential of producing glacial lake outburst floods (GLOFs). Imja Lake in Nepal is considered at risk for a GLOF. Communities in the path of a potential Imja GLOF are implementing adaptation projects, yet no quantitative data or guidance is available to understand the benefits of these projects or how to weigh benefits against the cost of implementation. We develop and demonstrate a decision-making methodology for GLOF risk management, incorporating available scientific information and uncertainty. The methodology consists of (1) identifying flooding scenarios, (2) evaluating scenario consequences, and (3) performing an economic analysis of proposed adaptation projects. The methodology is applied to assess benefits in Dingboche of lowering Imja Lake by 3, 10 and 20 m. The results show that the baseline case (no lake lowering) has the lowest expected cost because of low valuation of agricultural land and homes in the literature. Nonetheless, the result is sensitive to changes in the analysis variables. We also found that lowering the lake by 10 or 20 m is efficient according only to the methodology used here; however, considering only direct economic damages and literature cost estimates, the costs outweigh the benefits for these projects. |
| Databáze: | OpenAIRE |
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