Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017WR021578 |
Concentration-Discharge Responses to Storm Events in Coastal California Watersheds | |
Aguilera, Rosana1; Melack, John M.1,2 | |
2018 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2018 |
卷号 | 54期号:1页码:407-424 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Storm events in montane catchments are the main cause of mobilization of solutes and particulates into and within stream channels in coastal California. Nonlinear behavior of nutrients and suspended sediments during storms is evident in the hysteresis that arises in concentration-discharge (C-Q) relationships. We examined patterns in the C-Q hysteresis of nutrients (NO3, NH4+, DON, and PO43) and total suspended solids (TSS) during storms across 10 sites and water years 2002-2015 by quantifying the slope of the C-Q relationship and the rotational pattern of the hysteresis loop. We observed several hysteresis types in the similar to 400 storms included in our study. Concentrations of constituents associated with sediment transport (PO43 and TSS) peaked during high flows. Conversely, nitrogen species had hysteretic responses such as dilution with clockwise rotation in urban sites and enrichment with anticlockwise rotation in undeveloped sites. The wide range of C-Q responses that occurred among sites and seasons reflected the variable hydrological and biogeochemical characteristics of catchments and storms. Responses for nitrate in nested catchments differed in slope and rotation of C-Q hysteresis. Upland undeveloped and lowland urban sites had anticlockwise rotation at the onset of the rainy season following a dry year, which implied a delay in the transport of this solute to the streams. Slopes by the middle of the rainy season showed that the urban site switched from dilution to enrichment, and then again to dilution with clockwise rotation at the end of the season, which implied high initial concentrations and proximal sources. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000428474000023 |
WOS关键词 | SUSPENDED-SEDIMENT ; REGRESSION TREES ; NUTRIENT EXPORT ; NITRATE ; HYSTERESIS ; RIVER ; PHOSPHORUS ; DYNAMICS ; MODEL ; UNCERTAINTY |
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/21210 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Calif Santa Barbara, Inst Marine Sci, Santa Barbara, CA 93106 USA; 2.Univ Calif Santa Barbara, Bren Sch Environm Sci & Management, Santa Barbara, CA 93106 USA |
推荐引用方式 GB/T 7714 | Aguilera, Rosana,Melack, John M.. Concentration-Discharge Responses to Storm Events in Coastal California Watersheds[J]. WATER RESOURCES RESEARCH,2018,54(1):407-424. |
APA | Aguilera, Rosana,&Melack, John M..(2018).Concentration-Discharge Responses to Storm Events in Coastal California Watersheds.WATER RESOURCES RESEARCH,54(1),407-424. |
MLA | Aguilera, Rosana,et al."Concentration-Discharge Responses to Storm Events in Coastal California Watersheds".WATER RESOURCES RESEARCH 54.1(2018):407-424. |
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