Sediment loss prediction and beach fill erosion at Maronti Bay(Ischia Island – Southern Italy)

Giordano, Laura and Marsella, Ennio and Vicinanza, Diego (2006) Sediment loss prediction and beach fill erosion at Maronti Bay(Ischia Island – Southern Italy). Technical Report. Istituto per l'Ambiente Marino Costiero-Napoli. (Unpublished)

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The Maronti Bay, located in the southern part of the Ischia Island (Southern Italy), is a typical pocket beach affected by an evident erosion trend due to the presence of a very narrow continental shelf. Beach erosion was contrasted in the year 2002 by mean of a beach nourishment of 630.000 m3 of material captured from a submarine site. The paper aim is to understand not only the natural behaviour of this peculiar pocket beach but also the causes of net sediment loss after beach nourishment. Numerical models of sediment transport phenomena in shallow water are very useful to understand the erosion mechanisms in real cases. This study was conducted applying an integrated Coastal Area Model by mean the nearshore circulation and sediment transport dynamically linked to predict morphological and 3D bathymetry changes. The paper shows results obtained simulating nine selected exceptional storms happened between the year 2002 and the year 2005. Referring to the after nourishment (2002) reconstructed bathymetry the model allowed to simulate bathymetric evolution under storm conditions. The 2005 bathymetry was used to calibrate model prediction in terms of bottom variations and sediment net loss.

Item Type: Monograph (Technical Report)
Uncontrolled Keywords: Maronti Bay, beach nourishment, numerical models
Subjects: 500 Scienze naturali e Matematica
500 Scienze naturali e Matematica > 550 Scienze della Terra
Depositing User: Dott.ssa Laura Giordano
Date Deposited: 28 Jan 2010
Last Modified: 20 May 2010 12:02

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