Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2017WR022356 |
Groundwater Subsidy From Headwaters to Their Parent Water Watershed: A Combined Field-Modeling Approach | |
Ameli, A. A.1; Gabrielli, C.1; Morgenstern, U.2; McDonnell, J. J.1,3,4 | |
2018-07-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2018 |
卷号 | 54期号:7页码:5110-5125 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada; New Zealand; Peoples R China; England |
英文摘要 | Headwater groundwater subsidy, defined here as out-of-catchment groundwater flow contribution from a headwater catchment to its larger parent watershed (i.e., higher-order stream), can influence the water quality and quantity of regional water resources. But the integrated flow and transport modeling approaches currently being implemented to quantify this subsidy are limited by an absence of critical field observations, such as water table dynamics and groundwater age that are required to test such models. Here we couple tracer (and hydrometric) observations from the well-studied 4.5-ha M8 headwater catchment in the Maimai experimental watershed with a new semianalytical free-surface integrated flow and transport model. Our main research goals are to quantify the magnitude, age, and flow paths of the headwaters groundwater subsidies at the Maimai experimental watershed. Additionally, we explore through virtual experiments the effects of watershed slope, watershed active thickness, and recharge rate on the age, flow path, and magnitude of out-of-catchment headwater groundwater subsidies versus within-catchment (or local) groundwater flow contributions. Our results show that more than 50% of groundwater recharged in the Maimai headwaters subsidizes their parent watershed. The relative proportion of headwaters groundwater subsidies is inversely proportional to recharge rate and/or directly proportional to slope angle. Our results also show that the age of the headwater groundwater subsidies is more than 500 years, almost 9 times older than the age of within-catchment groundwater flow contributions. These findings highlight the need to consider headwaters groundwater subsidies in groundwater management area considerations. |
英文关键词 | regional groundwater transit time groundwater recharge Maimai watershed groundwater age |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000442502100052 |
WOS关键词 | REGIONAL GROUNDWATER ; THEORETICAL-ANALYSIS ; ENVIRONMENTAL TRACERS ; SERIES SOLUTIONS ; MOUNTAIN-BLOCK ; TRANSIT TIMES ; FLOW ; CATCHMENTS ; HYDROLOGY ; DISCHARGE |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/21517 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Saskatchewan, Global Inst Water Secur, Saskatoon, SK, Canada; 2.GNS Sci, Lower Hutt, New Zealand; 3.Ludong Univ, Sch Resources & Environm Engn, Yantai, Peoples R China; 4.Univ Birmingham, Sch Geog Earth & Environm Sci, Birmingham, W Midlands, England |
推荐引用方式 GB/T 7714 | Ameli, A. A.,Gabrielli, C.,Morgenstern, U.,et al. Groundwater Subsidy From Headwaters to Their Parent Water Watershed: A Combined Field-Modeling Approach[J]. WATER RESOURCES RESEARCH,2018,54(7):5110-5125. |
APA | Ameli, A. A.,Gabrielli, C.,Morgenstern, U.,&McDonnell, J. J..(2018).Groundwater Subsidy From Headwaters to Their Parent Water Watershed: A Combined Field-Modeling Approach.WATER RESOURCES RESEARCH,54(7),5110-5125. |
MLA | Ameli, A. A.,et al."Groundwater Subsidy From Headwaters to Their Parent Water Watershed: A Combined Field-Modeling Approach".WATER RESOURCES RESEARCH 54.7(2018):5110-5125. |
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