Influenza del clima ondoso e delle maree sulla posizione della linea di riva: Lido Signorino (Marsala)

Research output: Contribution to conferenceOtherpeer-review

Abstract

[automatically translated] The knowledge of the shore line in time position is essential to check the need of defense works and for the development of the coastal management plans. It is the intersection between the sea surface and that of the Earth, it is not fixed geometric entity, but varies continuously due to the waves and sea level fluctuations and is in continuous movement because of the solid transport phenomena. The greatest difficulty faced in relief operations is the accurate determination of its position. It is therefore necessary to understand the characteristics of waves (knowledge of storms), sea levels and the transverse profile of the beach at the time of the survey. This research work has as main objective the analysis of ' influence of the wave climate and tide on the estimated position of the line of the bank through remote sensing, also proposes a new methodology developed on a real case study. The proposed methodology has multi disciplinary character, it considers both geomorphological aspects and maritime hydraulic aspects and uses typical tools of remote sensing. The wave climate study was conducted from ordinary storm made propagate in the study area through a spectral wave model (SWAN: Simulating Waves Nearshore). Also you are considered to be the tidal oscillations is the maximum height reached by the wave on the emerged beach (run-up). The case study has highlighted errors produced in the estimation of the shore line position by the simple detection of the same through georeferenced orthophotos (1994, 2000, 2006) In fact, thus tracking the shore line is performed considering only the 'interface "wet / dry". Reporting on ortho-shifting of the shoreline caused by wave climate associated ordinary storm and also reporting the highest tidal fluctuations, it was found that during the time interval analyzed the additional error would be produced more than 15 m, invalidating the ' reliability of a diachronic study of evolution of the shoreline. 2006) In fact, thus tracking the shore line is performed considering only the "interface dry / wet". Reporting on ortho-shifting of the shoreline caused by wave climate associated ordinary storm and also reporting the highest tidal fluctuations, it was found that during the time interval analyzed the additional error would be produced more than 15 m, invalidating the ' reliability of a diachronic study of evolution of the shoreline. 2006) In fact, thus tracking the shore line is performed considering only the "interface dry / wet". Reporting on ortho-shifting of the shoreline caused by wave climate associated ordinary storm and also reporting the highest tidal fluctuations, it was found that during the time interval analyzed the additional error would be produced more than 15 m, invalidating the ' reliability of a diachronic study of evolution of the shoreline.
Original languageItalian
Number of pages10
Publication statusPublished - 2010

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