Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018WR024613 |
Suspended Sediment Mineralogy and the Nature of Suspended Sediment Particles in Stormflow of the Southern Piedmont of the USA | |
River, Mark; Richardson, Curtis J. | |
2019-07-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
卷号 | 55期号:7页码:5665-5678 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The majority of annual sediment flux is transported during storm events in many watersheds across the world. Using X-ray diffraction, we analyzed the mineralogy of grab samples of suspended sediment during different stages of storm hydrographs in the Southern Piedmont. Mineralogy of suspended sediment changes drastically from quartz-dominated during the rising limb to clay dominated during the late falling limb/baseflow. Changes in mineralogy can shed insight into turbidity relationships, suspended sediment sources, energy versus supply-limited sediment transport, and other suspended sediment parameters such as anion exchange capacity and trace element chemistry. An unexpected key finding, confirmed by X-ray diffraction and electron microscopy, is that both kaolinite and quartz are primarily transported as discrete crystalline minerals of different size classes in our watersheds; this contrasts with existing scientific literature stating that in most fluvial systems suspended sediment is transported primarily as composite particles composed of a heterogeneous mix of all particle sizes. Our findings also support existing literature that turbidity can be a good proxy for elements such as P, which are preferentially adsorbed onto iron oxide coatings thus in situ turbidity probes have great potential to provide relatively inexpensive estimates of P flux when calibrated for specific watersheds. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000481444700028 |
WOS关键词 | TOTAL PHOSPHORUS CONCENTRATIONS ; PARTICULATE PHOSPHORUS ; TURBIDITY MEASUREMENTS ; SURROGATE MEASURES ; SIZE DISTRIBUTION ; LIGHT-SCATTERING ; NORTH-CAROLINA ; CLAY-MINERALS ; TRANSPORT ; WATER |
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/184850 |
专题 | 资源环境科学 |
作者单位 | Duke Univ, Nicholas Sch Environm, Durham, NC 27708 USA |
推荐引用方式 GB/T 7714 | River, Mark,Richardson, Curtis J.. Suspended Sediment Mineralogy and the Nature of Suspended Sediment Particles in Stormflow of the Southern Piedmont of the USA[J]. WATER RESOURCES RESEARCH,2019,55(7):5665-5678. |
APA | River, Mark,&Richardson, Curtis J..(2019).Suspended Sediment Mineralogy and the Nature of Suspended Sediment Particles in Stormflow of the Southern Piedmont of the USA.WATER RESOURCES RESEARCH,55(7),5665-5678. |
MLA | River, Mark,et al."Suspended Sediment Mineralogy and the Nature of Suspended Sediment Particles in Stormflow of the Southern Piedmont of the USA".WATER RESOURCES RESEARCH 55.7(2019):5665-5678. |
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