Turbidity Hysteresis in an Estuary and Tidal River Following an Extreme Discharge Event

Ralston, David K.; Yellen, Brian; Woodruff, Jonathan D.; Fernald, Sarah

doi:10.1029/2020GL088005

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Turbidity Hysteresis in an Estuary and Tidal River Following an Extreme Discharge Event

2020
By Ralston, David K. ; Yellen, Brian ; Woodruff, Jonathan D. ; ...
Source: Geophysical Research Letters, 47, e2020GL088005

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Journal Title:

Geophysical Research Letters
Personal Author:

Ralston, David K. ; Yellen, Brian ; Woodruff, Jonathan D. ; Fernald, Sarah

Ralston, David K. ; Yellen, Brian ; Woodruff, Jonathan D. ; Fernald, Sarah Less -
NOAA Program & Office:

NOS (National Ocean Service) ; OCM (Office for Coastal Management)

NOS (National Ocean Service) ; OCM (Office for Coastal Management) Less -
Description:

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.
Keywords:

[+]

Estuaries Hydrology Sediments
Source:

Geophysical Research Letters, 47, e2020GL088005
DOI:

https://doi.org/10.1029/2020GL088005
Document Type:

Journal Article
Funding:

Grant no. NA14NOS4190145
Place as Subject:

Hudson River Estuary (N.Y. and N.J.)
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Submitted
Main Document Checksum:

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urn:sha256:cacc86683def71ca195c86f6ed72354176662327b9a4b0f71232d69056a825bf
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https://repository.library.noaa.gov/view/noaa/34020/noaa_34020_DS1.pdf
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Turbidity Hysteresis in an Estuary and Tidal River Following an Extreme Discharge Event

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