Abstract
The sheltered tidal flat of El Gala coast in the Gulf of Gabes has experienced profound morphologic change illustrated by the genesis of a wide marsh domain at the upper limit of the foreshore. This flat is marked by a sufficient sediment supply leading to a regular expansion of the marsh domain. Sediment availability is illustrated by the development of the high regime sedimentary structure like the megaripples. Hydro-sedimentary processes are governed occasionally by violent energy tied to tidal currents. During spring tide, velocity of the ebb tidal current outpaces 40 cm/s, and such energy is needed to perform megaripples like car wheel features. These structures with 20–55 cm in radius invoke that the hydrodynamic conditions are marked by an increased velocity during the ebb tide period. This current is accelerated by the substrate slope angle.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Allen, J. R. L. (2000). Morphodynamics of Holocene salt marshes: A review sketch from the Atlantic and Southern North Sea coasts of Europe. Quaternary Science Reviews, 19, 1155–1231.
De Goot, A. V. (2009). Salt-marsh sediment. Naturel γ-radioactivity and spatial pattern (p. 256). [Thesis, Univ of Groningen].
Folk, R. L., & Ward, W. C. (1957). Brazos River bar: Study in the significance of grain size parameters. Journal of Sedimentary Petrology, 27, 13–27.
French, J. (2006). Tidal marsh sedimentation and resilience to environmental change: Exploratory modelling of tidal, sea level and sediment supply forcing in predominantly allochthonous system. Marine Geology, 235, 119–136.
Gzam, M., Serbaji, M. M., Ouaja, M., & Jedoui, Y. (2013). Coastal progradation in response to the recent sea level rise: A case study of El Grine coast, Gulf of Gabes (Southeastern Tunisia). Arabian Journal of Geosciences, 6, 5007–5016.
Oueslati, A. (2004). Littoral et aménagement en Tunisie (p. 534). Ed ORBIS
Torres, R., Fagherazzi, S., Van Proosdij, D., & Hopkinson, C. (2006). Salt marsh geomorphology: Physical and ecological effects on landform. Estuarine, Coastal and Shelf Science, 309–310.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2024 The Author(s), under exclusive license to Springer Nature Switzerland AG
About this paper
Cite this paper
Gzam, M., Mansouri, B., Kharroubi, A. (2024). Available Sediment Supply Reworked as Megaripples by Tidal Currents in Sheltered Flats; Gulf of Gabes, Tunisia. In: Ksibi, M., et al. Recent Advances in Environmental Science from the Euro-Mediterranean and Surrounding Regions (3rd Edition). EMCEI 2021. Advances in Science, Technology & Innovation. Springer, Cham. https://doi.org/10.1007/978-3-031-43922-3_132
Download citation
DOI: https://doi.org/10.1007/978-3-031-43922-3_132
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-031-43921-6
Online ISBN: 978-3-031-43922-3
eBook Packages: Earth and Environmental ScienceEarth and Environmental Science (R0)