| 项目编号: | 1417405
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| 项目名称: | Mountain top mining effects on watershed hydrology and biogeochemistry: Learning from manipulation of the critical zone |
| 作者: | Brian McGlynn
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| 承担单位: | Duke University
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| 批准年: | 2013
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| 开始日期: | 2014-08-01
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| 结束日期: | 2018-07-31
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| 资助金额: | USD578934
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Geosciences - Earth Sciences
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| 英文关键词: | mtmvf
; watershed hydrology
; underground mining
; experimental manipulation
; mountain top mining
; mountain ridge
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| 英文摘要: | The watershed landscape in Central Appalachia is rapidly changing as a result of mountain top mining of coal with valley fill (MTMVF). During MTMVF operations, mountain ridges are removed with explosives to expose seams of coal too shallow to require underground mining. The waste rocks generated from these ridges are then deposited in adjacent stream valleys, filling the valleys beneath tens to hundreds of meters of this overburden. The landscapes left behind are dramatically altered and present both a significant challenge and opportunity to explore how the human restructuring of a watershed alters the timing and chemistry of stream flows. Through comparative analyses of mined and unmined watersheds, this project will provide much needed knowledge about how water availability, water quality, and flood risks are being altered by MTMVF.
Little prior knowledge exists for predicting hydrologic response to this extreme landscape disturbance that penetrates hundreds of meters into bedrock and leaves behind a reconfigured topography overlying a reorganized subsurface. MTMVF must drastically alter watershed hydrology and solute transport dynamics. Yet basic hydrologic theory and experimental manipulations of vegetation and surficial soils are insufficient to predict how MTMVF will change the magnitude and timing of water and solute transport in watersheds. This project will combine high resolution terrain analyses, intensive field measurement campaigns, and cutting edge modeling tools to examine and predict how hydro-biogeochemical responses to precipitation differ between mined and unmined landscapes from headwater to river basin scales. This research will also provide insight into how land surface and subsurface structures interact to influence hydrological and geochemical dynamics, improving our understanding of watershed hydrology in both natural and disturbed landscapes. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/96253
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| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
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| Recommended Citation: | |
Brian McGlynn. Mountain top mining effects on watershed hydrology and biogeochemistry: Learning from manipulation of the critical zone. 2013-01-01.
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