Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016WR018934 |
Understanding watershed hydrogeochemistry: 1. Development of RT-Flux-PIHM | |
Bao, Chen1; Li, Li2; Shi, Yuning3; Duffy, Christopher2 | |
2017-03-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2017 |
卷号 | 53期号:3 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Model development in hydrology and geochemistry has been advancing separately with limited integration. We developed a watershed hydrogeochemical code RT-Flux-PIHM to understand complex interactions between hydrological processes (PIHM), land-surface processes (FLUXNoah Land Surface Model), and multicomponent subsurface reactive transport (RT). The RT module simulates geochemical processes including aqueous complexation, surface complexation, mineral dissolution and precipitation, and cation exchange. The RT module is verified against the widely used reactive transport code CrunchFlow. The code uses semidiscrete finite volume method and irregular gridding and offers data harvesting capabilities from national databases. The application of RT-Flux-PIHM is demonstrated in the Susquehanna Shale Hills Critical Zone Observatory (SSHCZO). We aim to understand key processes that govern hydrogeochemical dynamics of the nonreactive chloride and reactive magnesium. Simulation results indicate that watershed characteristics, in particular topography, dictate the spatial distributions of water content and soil dissolution rates. Ion exchange provides buffering capacities and leads to a hysteresis loop of concentration and discharge relationship of magnesium, which differs from the open hysteresis of chloride. RT-Flux-PIHM offers physics-based modeling capabilities to integrate the vast amount of water and chemistry data that have now become available, to differentiate the relative importance of competing processes, and to test hypotheses at the interface of hydrology and geochemistry. |
英文关键词 | watershed hydrogeochemistry reactive transport process-based model complex model concentration-discharge relationship |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000400160500033 |
WOS关键词 | MODELING STREAMWATER CHEMISTRY ; REACTIVE GEOCHEMICAL TRANSPORT ; MINERAL DISSOLUTION RATES ; VARIABLY SATURATED FLOW ; SOILWATER END-MEMBERS ; COUPLED LAND-SURFACE ; POROUS-MEDIA FLOW ; HYDROLOGIC MODEL ; MARINE-SEDIMENTS ; ATMOSPHERIC CO2 |
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/21356 |
专题 | 资源环境科学 |
作者单位 | 1.Penn State Univ, John & Willie Leone Dept Energy & Mineral Engn, University Pk, PA 16802 USA; 2.Penn State Univ, Dept Civil & Environm Engn, University Pk, PA 16802 USA; 3.Penn State Univ, Dept Ecosyst Sci & Management, University Pk, PA 16802 USA |
推荐引用方式 GB/T 7714 | Bao, Chen,Li, Li,Shi, Yuning,et al. Understanding watershed hydrogeochemistry: 1. Development of RT-Flux-PIHM[J]. WATER RESOURCES RESEARCH,2017,53(3). |
APA | Bao, Chen,Li, Li,Shi, Yuning,&Duffy, Christopher.(2017).Understanding watershed hydrogeochemistry: 1. Development of RT-Flux-PIHM.WATER RESOURCES RESEARCH,53(3). |
MLA | Bao, Chen,et al."Understanding watershed hydrogeochemistry: 1. Development of RT-Flux-PIHM".WATER RESOURCES RESEARCH 53.3(2017). |
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