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Depositional Sediment on Intertidal Marshes Near Terrebonne Bay and Atchafalaya Bay, Louisiana

by Flora Chu Wang, Louisiana State Univ, Baton Rouge, United States,
Menglou Wang, Louisiana State Univ, Baton Rouge, United States,



Document Type: Proceeding Paper

Part of: Coastal Zone '93

Abstract:

The net transport of inorganic sediment through tidal bayous and dispersal into adjacent marsh systems are considered important contribution to marsh accretion. Marsh habitats are dependent upon sedimentation to marsh accretion. Marsh habitats are dependent upon sedimentation and vertical accretion to maintain a certain elevation within the local tidal range in order to negate the combined effects of subsidence and sea level rise. Marked fluctuations of total suspended sediment concentrations in tidal bayous during each tidal cycle may be related to overall marsh morphology. This paper presents the preliminary results from a study of depositional sediments on marsh surfaces collected at two specific sites near two shallow bays in south Louisiana during spring/neap tides in 1992.

Subject Headings: Sediment | Tides | Sediment transport | Wetlands (coastal) | Bays | Transportation engineering | Suspended sediment | Louisiana | United States

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