气候变化领域集成服务门户(CCPortal): Turbidity Hysteresis in an Estuary and Tidal River Following an Extreme Discharge Event

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DOI	10.1029/2020GL088005
	Turbidity Hysteresis in an Estuary and Tidal River Following an Extreme Discharge Event
	Ralston D.K.; Yellen B.; Woodruff J.D.; Fernald S.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:15
英文摘要	Nonlinear turbidity-discharge relationships are explored in the context of sediment sourcing and event-driven hysteresis using long-term (≥12-year) turbidity observations from the tidal freshwater and saline estuary of the Hudson River. At four locations spanning 175 km, turbidity generally increased with discharge but did not follow a constant log-log dependence, in part due to event-driven adjustments in sediment availability. Following major sediment inputs from extreme precipitation and discharge events in 2011, turbidity in the tidal river increased by 20–50% for a given discharge. The coherent shifts in the turbidity-discharge relationship along the tidal river over the subsequent 2 years suggest that the 2011 events increased sediment availability for resuspension. In the saline estuary, changes in the sediment-discharge relationship were less apparent after the high discharge events, indicating that greater background turbidity due to internal sources make event-driven inputs less important in the saline estuary at interannual time scales. © 2020 The Authors.
英文关键词	Estuaries; Hysteresis; Precipitation (meteorology); Rivers; Sediments; Extreme discharges; Extreme precipitation; Interannual time scale; Internal source; Re-suspension; Sediment availability; Sediment discharge; Sediment sourcing; Turbidity; estuary; extreme event; hysteresis; precipitation intensity; tidal channel; timescale; turbidity
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169969
作者单位	Woods Hole Oceanographic Institution, Woods Hole, MA, United States; Department of Geosciences, University of Massachusetts, Amherst, MA, United States; New York State Department of Environmental Conservation, Hudson, NY, United States
推荐引用方式 GB/T 7714	Ralston D.K.,Yellen B.,Woodruff J.D.,et al. Turbidity Hysteresis in an Estuary and Tidal River Following an Extreme Discharge Event[J],2020,47(15).
APA	Ralston D.K.,Yellen B.,Woodruff J.D.,&Fernald S..(2020).Turbidity Hysteresis in an Estuary and Tidal River Following an Extreme Discharge Event.Geophysical Research Letters,47(15).
MLA	Ralston D.K.,et al."Turbidity Hysteresis in an Estuary and Tidal River Following an Extreme Discharge Event".Geophysical Research Letters 47.15(2020).