The main objectives of the project are the implementation of a 2-D Mediterranean storm surge model, the assessment of highest expected sea elevation due to storm surges, the identification of coastal areas in risk of inundation in the East Mediterranean Sea and the storm surge detection and storm-track calculation for the study period (2000-2004).
:: A 2-dimensional hydrodynamic model is implemented in the region, calculating the sea level altimetry
:: Satellite images and in situ measurements are collected from stations around the East Mediterranean coasts
:: Potential inundation zones are then identified using a 90-m resolution digital elevation model (DEM)
:: The implication of storm tracks in major sea level rise incidents in the East Mediterranean is investigated for the studied period
:: Computation and plotting of storm tracks, is accomplished using an algorithm that tracked down sea level pressure (SLP) minima, recording their development
:: Statistical and graphical analysis are used in order to compare and present the work package results
:: Statistical analysis about storms and SLH alterations over Mediterranean Sea
:: Detection of the dangerous coastal areas
:: Determination of significant storm surge events during specific periods and examination of their major tracks and magnitudes
:: Examination of each storm surge process importance to the sea level alterations in several sub-domains of the Mediterranean Sea |
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Gauge stations in the NE Mediterranean, providing SLH timeseries (black) and coastal inundation high risk areas (grey) |
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This GoogleMap contais information about:
:: Model Simulated Sea Level
:: Heights (SLH) [m]
:: In-situ Sea Level measurements [m]
:: Sea Level Pressures (SLP) [hPa]
:: Coastal Innundation Risky Areas
The Manual of this tool can be found here: view manual
The Meditterranean Coastal Zone Information Map can also be downloaded: download tool
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:: A 2-dimensional hydrodynamic model
:: Grid resolution 1/10° x 1/10°
:: Forcing: wind data, atmospheric pressure and wave data (Atmospheric data provided by the the POSEIDON forcing fields (HCMR)
:: Boundary conditions: Tidal input imposed in the Gibraltar (tidal components measured)
Storm surge model domain and bathymetry |
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:: In situ Sea Level Height (SLH) alterations from several gauge stations
:: Satellite altimetry (Aviso/Altimetry project http://www.jason.oceanobs.com)
Alexandroupolis (GREECE)
Dubrovnik (CROATIA) |
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A method for automated detection and tracking of storms or cyclones was developed by the "National Aeronautics and Space Administration - Goddard Institute for Space Studies" (NASA-GISS, http://data.giss.nasa.gov/stormtracks). A simplified version of the NASA’s methology is used in this project.
The computation and plotting of storm tracks, is accomplished by using an algorithm that identifies and tracks sea level pressure (SLP) minima (Pmin). The algorithm searches for and identifies absolute minima from the gridded field of every 12-hour period of the desired year. The minimum for the ensuing 12-hour SLP grid is searched, and its position is located. Any SLP minima within a critical radius of 1440 km are joined by a segment, representing the path of the low pressure center during that 12-hour period (a cyclone's center can travel at a mean speed of no more than 120 km/hr or 1440 km/12 hr). Any two associated minima identify one storm track segment, as long as the storm lasts at least 36 hours. If at any time two segments on the same track are found to define an acute angle of less than 85°, the low pressure centers are considered to represent separate storms (extra tropical cyclones are not found to "double back" on themselves over 12 hours). Finally, throughout the full duration of a storm track, the SLP center of the track is less than 1015 hPa (low pressure means SLP<1015 mbars).
The 10th storm track of 2003 representing the trajectory of the low pressure center
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The Pearson product-moment correlation coefficient (r) is used to document the relationship between 12hourly mean SLP and 12hourly max SLH
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Percentage % indicating the SLH overtopping (>10cm) posibillity for several coastal areas
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Frequencies of SLH>40m (model hindcasting) along the East Mediterranean region during the period 2000-2004 |
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CORI: PREVENTION AND MANAGEMENT OF SEA ORIGINATED RISKS TO THE COASTAL ZONE |
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