Sustainability of a Tidal Freshwater Marsh Exposed to a Long-term Hydrologic Barrier and Sea Level Rise

2013 ◽  
Vol 36 (3) ◽  
pp. 585-594 ◽  
Author(s):  
P. Delgado ◽  
P. F. Hensel ◽  
C. W. Swarth ◽  
M. Ceroni ◽  
R. Boumans
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Freshwater Marsh ◽  
Tidal Freshwater ◽  
Tidal Freshwater Marsh ◽  
And Sea Level

Long-term morphodynamics of a large estuary subject to decreasing sediment supply and sea level rise

2020 ◽  
Vol 191 ◽  
pp. 103212 ◽  
Author(s):  
Bing Yuan ◽  
Jian Sun ◽  
Binliang Lin ◽  
Fanyi Zhang
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Sediment Supply ◽  
And Sea Level

Effect of decreasing sediment supply and sea level rise on the long-term morphodynamics of a large estuary

2021 ◽  
Author(s):  
Bing Yuan ◽  
Jian Sun ◽  
Binliang Lin ◽  
Fanyi Zhang
Keyword(s):  
Equilibrium State ◽  
Sea Level Rise ◽  
Sea Level ◽  
Yangtze Estuary ◽  
Sediment Supply ◽  
Bed Erosion ◽  
Adjustment Time ◽  
Riverine Sediment ◽  
And Sea Level

<p>Globally the riverine sediment supply to estuaries is decreasing and the mean sea level is rising, while the effects of these changes on the long-term estuarine morphodynamics have not been fully investigated. An idealized numerical model was used to explore the long-term morphodynamics of a large estuary subject to these changes. In the model, a funnel-shaped channel with fixed banks, constant riverine water and sediment fluxes, a single grain size and a semi-diurnal tide were used. A range of values of changes in the sediment supply (50-90% reduction) and sea level (1-5~mm/yr increase) were considered. Starting from an equilibrium state for an initial sediment supply, the estuary shifts to a new equilibrium for the considered changes on a timescale of millennia. Half of the bed level change occurs within several hundreds of years. A larger decrease in the sediment supply leads to a stronger bed erosion, while the corresponding adjustment time has minor changes in its range for the considered settings. When combined with sea level rise, the erosion is weakened and the adjustment time is shortened. The equilibrium state under sea level rise is characterized by a bed level keeping pace with the sea level and a significant amount of sediment being trapped in the estuary. Additional numerical experiments that use more realistic geometry and forcing of the Yangtze Estuary show that overall erosion of the estuary is expected for centuries.</p>

Contemporary Deposition and Long-Term Accumulation of Sediment and Nutrients by Tidal Freshwater Forested Wetlands Impacted by Sea Level Rise

2016 ◽  
Vol 39 (4) ◽  
pp. 1006-1019 ◽  
Author(s):  
Gregory B. Noe ◽  
Cliff R. Hupp ◽  
Christopher E. Bernhardt ◽  
Ken W. Krauss
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Forested Wetlands ◽  
Tidal Freshwater

scholarly journals Estuarine Responses to Long‐Term Changes in Inlets, Morphology, and Sea Level Rise

2019 ◽  
Vol 124 (12) ◽  
pp. 9235-9257 ◽  
Author(s):  
Ryan P. Mulligan ◽  
David J. Mallinson ◽  
Gregory J. Clunies ◽  
Alexander Rey ◽  
Stephen J. Culver ◽  
...  
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Long Term Changes ◽  
And Sea Level

scholarly journals Long-term 15 N-nitrogen retention in tidal freshwater marsh sediment: Elucidating the microbial contribution

2009 ◽  
Vol 54 (1) ◽  
pp. 13-22 ◽  
Author(s):  
Britta Gribsholt ◽  
Bart Veuger ◽  
Anton Tramper ◽  
Jack J. Middelburg ◽  
Henricus T. S. Boschker
Keyword(s):  
Nitrogen Retention ◽  
Freshwater Marsh ◽  
Tidal Freshwater ◽  
Tidal Freshwater Marsh ◽  
Marsh Sediment
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