Bilan Des Connaissances De La Dynamique De L'érosion Des Côtes
Document generated on 09/26/2021 10:37 p.m. Géographie physique et Quaternaire --> See the erratum for this article Bilan des connaissances de la dynamique de l’érosion des côtes du Québec maritime laurentien A Review of Coastal Erosion Dynamics on Laurentian Maritime Québec Coasts Pascal Bernatchez and Jean-Marie M. Dubois Volume 58, Number 1, 2004 Article abstract A review of coastal erosion dynamics in the St. Lawrence maritime Estuary and URI: https://id.erudit.org/iderudit/013110ar Gulf demonstrates that shoreline retreat in unconsolidated formations varies DOI: https://doi.org/10.7202/013110ar between 0.5 and 2.0 m/yr. The data indicate a recent acceleration of coastal erosion that corresponds with the anticipated global trend resulting from See table of contents climatic change. Saltmarshes are the most sensitive to coastal erosion, with some upper marshes having already disappeared in the last decade. In cold regions saltmarshes are affected by numerous processes such as undercutting Publisher(s) by waves and tidal currents, ice foot scouring, freeze-thaw processes, wetting and drying processes, biologic processes and anthropogenic activities. Wave Les Presses de l'Université de Montréal action during spring tides or storm surges is an important factor causing shoreline retreat in sandy cliffs, whereas cryogenic and hydrogeological ISSN processes are mainly responsible for reactivation and erosion of silt and clay-based cliffs in deltaic environments. In maritime Québec, quantitative 0705-7199 (print) seasonal studies are needed to develop a better understanding of 1492-143X (digital) spatio-temporal process distribution and to better assess the causes that regulate coastal erosion in mid-latitude cold regions.
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