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Assessing Hydrological Effects of Human Interventions on Coastal Systems: Numerical Applications to the Venice Lagoon : Volume 9, Issue 12 (18/12/2012)

By Ferrarin, C.

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Book Id: WPLBN0004013192
Format Type: PDF Article :
File Size: Pages 40
Reproduction Date: 2015

Title: Assessing Hydrological Effects of Human Interventions on Coastal Systems: Numerical Applications to the Venice Lagoon : Volume 9, Issue 12 (18/12/2012)  
Author: Ferrarin, C.
Volume: Vol. 9, Issue 12
Language: English
Subject: Science, Hydrology, Earth
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2012
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Tagliapietra, D., Zaggia, L., Ghezzo, M., Umgiesser, G., Camatti, E., Sarretta, A., & Ferrarin, C. (2012). Assessing Hydrological Effects of Human Interventions on Coastal Systems: Numerical Applications to the Venice Lagoon : Volume 9, Issue 12 (18/12/2012). Retrieved from http://www.ebooklibrary.org/


Description
Description: CNR – National Research Council of Italy, ISMAR – Marine Sciences Institute in Venice, Castello 2737/f, 30122, Venice, Italy. The hydrological consequences of historical, contemporary and future human activities on a coastal system were investigated by means of numerical models. The changes in the morphology of the Lagoon of Venice during the last century result from the sedimentological response to the combined effects of human interventions on the environment and global changes. This study focuses on changes from 1927 to 2012 and includes the changes planned for the protection of the city of Venice from storm surges and exceptional tides under future sea level rise scenarios. The application of a hydrodynamic model to simulate the circulation of water masses and the transport of a passive tracer enabled the analysis of the morphodynamic effects on the lagoon circulation and the interaction with the sea. The absolute values of the exchange between the lagoon and sea increased from 1927 to 2002 (from 3900 to 4600 m3 s−1), while the daily fraction of lagoon water volume exchanged decreased. At the same time, the water renewal time shortened from 11.9 to 10.8 days. Morphological changes during the last decade induced an increase of the basin-wide water renewal time (from 10.8 to 11.3 days). In the future, Venice Lagoon will evolve to a more restricted environment due to sea level rise and periodical closure of the lagoon from the sea during flooding events. Simulated scenarios of sea level rise showed that under fall-winter conditions the water renewal time will increased considerably especially in the central part of the lagoon. Furthermore, some considerations on the impact of the hydromorphological changes on the ecological dynamics are proposed.

Summary
Assessing hydrological effects of human interventions on coastal systems: numerical applications to the Venice Lagoon

Excerpt
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