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Effect of coastal processes on the distribution and persistence of oil spilled by the Amoco-Cadiz - Preliminary conclusions ArchiMer
D'Ozouville, Laurent; Gundlach, E.r.; Hayes, M.o..
The section of North Brittany contaminated by the "AMOCO-CADIZ" oil spill (17 March 1978) is a low-lying ria coastline dominated by dynamic processes favorable for the rapid dispersion of the oil. Aerial and ground surveys were made of the impacted area on 19 March - 2 April and 20 - 28 April 1978, to detail the distribution and persistence of oil along the shoreline. Oil deposition on the shoreline was primarily controlled by local geomorphology (e.g. rocky headlands, tombolos, crenulate bays, etc..) and wind-driven currents. Our results indicate that approximately 62.000 tons of oil was spread along 123 km of coastline and offshore rocks at the time of our first study. During the second study period, oil was distributed along 375 km of shoreline and...
Tipo: Text Palavras-chave: Pollution Hydrocarbures; Géomorphologie côtière; Processus côtiers; Oil spill; Coastal geomorphology; Coastal processes.
Ano: 1978 URL: http://archimer.ifremer.fr/doc/00306/41720/40931.pdf
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Systematic Review Shows That Work Done by Storm Waves Can Be Misinterpreted as Tsunami-Related Because Commonly Used Hydrodynamic Equations Are Flawed ArchiMer
Cox, Rónadh; Ardhuin, Fabrice; Dias, Frédéric; Autret, Ronan; Beisiegel, Nicole; Earlie, Claire S.; Herterich, James G.; Kennedy, Andrew; Paris, Raphaël; Raby, Alison; Schmitt, Pal; Weiss, Robert.
Coastal boulder deposits (CBD), transported by waves at elevations above sea level and substantial distances inland, are markers for marine incursions. Whether they are tsunami or storm deposits can be difficult to determine, but this is of critical importance because of the role that CBD play in coastal hazard analysis. Equations from seminal work by Nott (1997), here referred to as the Nott Approach, are commonly employed to calculate nominal wave heights from boulder masses as a means to discriminate between emplacement mechanisms. Systematic review shows that this approach is based on assumptions that are not securely founded and that direct relationships cannot be established between boulder measurements and wave heights. A test using an unprecedented...
Tipo: Text Palavras-chave: Coastal boulder deposits; Storm waves; Tsunami; Hydrodynamic equations; Coastal erosion; Coastal hazard; Coastal geomorphology; Wave modeling.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00610/72237/71040.pdf
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