Knowledge Resource Center for Ecological Environment in Arid Area
| Identifying land use changes and coal mining impacts on water quality: A case study across time and space | |
| Murphy;Jennifer | |
| 出版年 | 2011 |
| 学位授予单位 | VANDERBILT |
| 英文摘要 | The spatial and temporal variability of water chemistry complicates the process of observing and identifying changes to water quality, particularly in catchments where data are spare. In this study, the effect of coal mining on water quality was assessed for the New River and upland, sub-catchment Indian Fork, in eastern Tennessee. Through the use of fragmented water quality and discharge records, hydrochemical trends were identified and compared between catchments and across time. Concentration-discharge relationships were characterized and recursive time-series modeling was completed to quantify long and short term hydrochemical trends. The inability of the New River 2007 time-series model to accurately perform under 1980 low-flow conditions suggests the basin wide shift in reclamation practices during the 1980s affected hydrologic pathways. Little temporal change was anticipated for the Indian Fork as mining ceased prior to available data, however hydrochemistry shifted from chemostatic to dilution response, likely due to spatial heterogeneity of the stream. The hydrochemical spatial disparity between the catchments is likely attributable to the percent of mining disturbed area within the New River (~7%) and Indian Fork (23%). Alternating c-Q loop rotation in the New River was found to be dependent on peak flows above (CW) or below (CCW) 25 m3/s discharge. Due to the magnitude of disturbance, the Indian Fork is conceptualized as a two component system: (1) impacted (i.e. spoil water) and (2) non-impacted water. The New River is conceptualized as a three component system: (1) impacted water, (2) non-impacted water, and (3) event water. |
| 英文关键词 | Earth and Environmental Sciences |
| 语种 | 英语 |
| URL | http://etd.library.vanderbilt.edu/available/etd-03282011-130437 |
| 来源机构 | VANDERBILT |
| 资源类型 | 学位论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/245864 |
| 推荐引用方式 GB/T 7714 | Murphy;Jennifer. Identifying land use changes and coal mining impacts on water quality: A case study across time and space[D]. VANDERBILT,2011. |
| 条目包含的文件 | 条目无相关文件。 | |||||
| 个性服务 |
| 推荐该条目 |
| 保存到收藏夹 |
| 导出为Endnote文件 |
| 谷歌学术 |
| 谷歌学术中相似的文章 |
| [Murphy;Jennifer]的文章 |
| 百度学术 |
| 百度学术中相似的文章 |
| [Murphy;Jennifer]的文章 |
| 必应学术 |
| 必应学术中相似的文章 |
| [Murphy;Jennifer]的文章 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
