Long tsunami oscillations following the 30 October 2020 Mw 7.0 Aegean Sea earthquake: Observations and modelling

摘要: Eastern Mediterranean Sea has experienced four tsunamigenic earthquakes since 2017, which delivered moderate damage to coastal communities in Turkey and Greece. The most recent of these tsunamis occurred on 30 October 2020 the Aegean Sea, was generated by an Mw 7.0 normal-faulting earthquake, offshore Izmir province (Turkey) Samos Island (Greece). earthquake destructive caused death tolls 117 2 Greece, respectively. tsunami produced killed one person Turkey. Due semi-enclosed nature basin, any perturbation this sea is expected trigger several basin oscillations. Here, we study through level data analysis numerical simulations with aim further understanding behavior Sea. Analysis from available tide gauges showed that maximum zero-to-crest amplitude 5.1–11.9 cm. arrival times wave were up 14.9 h after first arrivals at each station. duration oscillation 19.6 h to > 90 h various gauges. Spectral revealed peak periods for tsunami; identified source as 14.2–23.3 min. We attributed other (4.5 min, 5.7 min, 6.9 min, 7.8 min, 9.9 min, 10.2 min 32.0 min) non-source phenomena such sub-basin By comparing surveyed run-up heights simulated ones, noticed north-dipping fault model better reproduces observations compared south-dipping model. However, are unable choose a because very limited sparsely distributed. Additional researches event using types geophysical required determine actual plane earthquake.