Journal
MARINE GEOLOGY
Volume 405, Issue -, Pages 68-76Publisher
ELSEVIER
DOI: 10.1016/j.margeo.2018.08.005
Keywords
-
Categories
Funding
- U.S. National Science Foundation's Coastal SEES (Science, Engineering and Education for Sustainability) Program [1427389]
- Division Of Earth Sciences
- Directorate For Geosciences [1427389] Funding Source: National Science Foundation
Ask authors/readers for more resources
To investigate bay hydrodynamics and its impacts on the adjacent micro-tidal wetland sustainability, hourly measurements of wave, tidal current, and benthic suspended sediment concentration in summer, winter, and spring of 2015-2016 were conducted in Fourleague Bay, Louisiana, USA. High-temporal resolution data indicate that benthic suspended sediment resuspension had a dominant periodicity of 4.8-d, which was mainly caused by wind-driven waves. Sediment flux reached 28 g.m(-2).s(-1) during events. Net sediment flux direction is northwestward in summer, and southeastward in winter and spring. Potential depth-integrated sediment flux to surrounding wetland varied within 0-500 g.m(-1).s(-1). Seasonal variations of river discharge and wind direction (particularly speed > 3 m.s(-1)) dominated potential sediment contribution from the bay to the surrounding wetland. Three sediment transport regimes were delineated: 'bypassing' season, resuspension-accumulation season, and combined 'bypassing' and resuspension-accumulation season. This study couples bay hydrodynamics to the sediment transport processes and sustainability of adjacent wetlands in a micro tidal environment. It sheds light on the understanding of natural feedback mechanisms and how estuarine-marsh system survive high relative sea level rising scenario in micro tidal environment, which could aid in the design of future ecological engineering restoration strategies.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available