Extreme wave events in the coastal zone of Lefkada and Akarnania (NW Greece) and their possible inﬂuence on civil structures. A comparison of field evidence and modeling results - Floth, Ulrich (Interdisziplinäre Forschungen in Akarnanien = Διεπιστημονικές έρευνες στην Ακαρνανία, 2013)