Papers by Evangelos Voukouvalas
Non-stationary Extreme Value Analysis: a simplified approach for Earth science applications
Hydrology and Earth System Sciences Discussions, 2016
Expected Effects of Offshore Wind Farms on Mediterranean Marine Life
Journal of Marine Science and Engineering, 2016
Extreme water levels along the coast are crucial for impact assessment efforts. Storm surges are ... more Extreme water levels along the coast are crucial for impact assessment efforts. Storm surges are an important component of the hazard and it is unknown how they will evolve along Europe's coastline in view of climate change. In the present contribution, the open-source coastal circulation model Delft3D-Flow was forced by wind velocity and atmospheric pressure fields from CMIP5 climate models in order to evaluate dynamics in storm surges (SSL) along the European coastline during this century.
The plight of the beaches of crete
Solutions to Coastal Disasters Congress 2008 - Proceedings of the Solutions to Coastal Disasters Congress 2008, 2008
The coastlines of the island of Crete, Greece are retreating at a rate that has increased substan... more The coastlines of the island of Crete, Greece are retreating at a rate that has increased substantially in the past decade. We describe here specific examples of rapid erosion. As in other parts of the Mediterranean, we infer that the causes are anthropogenic and include ...
Geophysical Journal International, 2009
We conduct a comprehensive study of the Amorgos, Greece earthquake and tsunami of 1956 July 09, t... more We conduct a comprehensive study of the Amorgos, Greece earthquake and tsunami of 1956 July 09, the largest such event in the Aegean Sea in the 20th century. Systematic relocation of the main shock and 34 associated events defines a rupture area measuring 75 × 40 km. The use of the Preliminary Determination of Focal Mechanism algorithm resolves the longstanding controversy about the focal geometry of the event, yielding a normal faulting mechanism along a plane dipping to the southeast, which expresses extensional tectonics in the back arc behind the Hellenic subduction zone. The seismic moment of 3.9 × 10 27 dyn cm is the largest measured in the past 100 yr in the Mediterranean Basin.
Storm surges are an important coastal hazard component and it is unknown how they will evolve alo... more Storm surges are an important coastal hazard component and it is unknown how they will evolve along Europe’s coastline in view of climate change. In the present contribution, the hydrodynamic model Delft3D-Flow was forced by surface wind and atmospheric pressure fields from a 8-member climate model ensemble in order to evaluate dynamics in storm surge levels (SSL) along the European coastline (1) for the baseline period 1970–2000; and (2) during this century under the Representative Concentration Pathways RCP4.5 and RCP8.5. Validation simulations, spanning from 2008 to 2014 and driven by ERA-Interim atmospheric forcing, indicated good predictive skill (0.06 m < RMSE < 0.29 m and 10 % < RMSE < 29 % for 110 tidal gauge stations across Europe). Peak-over-threshold extreme value analysis was applied to estimate SSL values for different return periods, and changes of future SSL were obtained from all models to obtain the final ensemble. Values for most scenarios and return periods indicate a projected increase in SSL at several locations along the North European coastline, which is more prominent for RCP8.5 and shows an increasing tendency towards the end of the century for both RCP4.5 and RCP8.5. Projected SSL changes along the European coastal areas south of 50°N show minimal change or even a small decrease, with the exception of RCP8.5 under which a moderate increase is projected towards the end of the century. The present findings indicate that the anticipated increase in extreme total water levels due to relative sea level rise (RSLR), can be further enforced by an increase of the extreme SSL, which can exceed 30 % of the RSLR, especially for the high return periods and pathway RCP8.5. This implies that the combined effect could increase even further anticipated impacts of climate change for certain European areas and highlights the necessity for timely coastal adaptation and protection measures. The dataset is publicly available under this link: http://data.jrc.ec.europa.eu/collection/LISCOAST.
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Papers by Evangelos Voukouvalas