Tsunami hazard in the Eastern Mediterranean and its connected seas: Toward a Tsunami warning center in Turkey

Abstract Tsunami mitigation, preparedness and early warning initiatives have begun at the global scale only after the tragic event of Sumatra in 2004. Turkey, as a country with a history of devastating earthquakes, has been also affected by tsunamis in its past. In this paper we present the Tsunami Hazard in the Eastern Mediterranean and its connected seas (Aegean, Marmara and Black Sea) by providing detailed information on historically and instrumentally recorded significant tsunamigenic events surrounding Turkey, aiming to a better understanding of the Tsunami threat to the Turkish coasts. In addition to the review of the Tsunami hazard, we have studied a possible Tsunami source area between Rhodes and SW of Turkey using Tsunami numerical model NAMI DANCE-two nested domains. We have computed a maximum positive amplitude of 1.13 m and maximum negative amplitude of −0.5 m at the Tsunami source by this study. The distribution of maximum positive amplitudes of the water surface elevations in the selected Tsunami forecast area and time histories of water level fluctuations near selected locations (Marmaris, Dalaman, Fethiye and Kas towns) indicate that the maximum positive amplitude near the coast in the selected forecast area exceeds 3.5 m. The arrival time of maximum wave to Marmaris, Dalaman, is 10 min, while that of Fethiye and Kas towns is 15–20 min. The maximum positive amplitudes near the shallow region of around 10 m depth are 3 m (Marmaris), 1 m (Dalaman), 2 m (Fethiye) and 1 m (Kas). Maximum positive amplitudes of water elevations in the duration of 4 h simulation of the Santorini-Minoan Tsunami in around 1600 BC in the Aegean Sea are also calculated based on a simulation performed using 900 m grid resolution of Aegean sea bathymetry with a 300 m collapse of 10 km diameter of Thera (Santorini) caldera. We have also presented the results of the Tsunami modeling and simulation for Marmara Sea obtained from a previous study. Last part of this paper provides information on the establishment of a Tsunami Warning Center by KOERI, which is expected to act also as a regional center under the UNESCO Intergovernmental Oceanographic Commission – Intergovernmental Coordination Group for the Tsunami Early Warning and Mitigation System in the North-Eastern Atlantic, the Mediterranean and Connected Seas (ICG/NEAMTWS) initiative, emphasizing on the challenges together with the future work needed to be accomplished.

[1]  N. N. Ambraseys,et al.  The seismicity of Turkey and adjacent areas: A historical review, 1500-1800 , 1995 .

[2]  H. N. Pamir,et al.  Das anatolische Erdbeben Ende 1939 , 1941 .

[3]  D. McKenzie.  Active Tectonics of the Mediterranean Region , 1972 .

[4]  Yoshito Tsuchiya,et al.  Tsunami: Progress in Prediction, Disaster Prevention and Warning , 1995 .

[5]  Regional Considerations of Coastline Change, Tsunami Damage and Recovery along the Southern Coast of the Bay of Izmit (The Kocaeli (Turkey) Earthquake of 17 August 1999) , 2004 .

[6]  Tetsuo Santoˆ.  Seismicity of the european area - Part II , 1972 .

[7]  Andrey Kurkin,et al.  Tsunamis in the Black Sea: Comparison of the historical, instrumental, and numerical data , 2004 .

[8]  N. Ambraseys,et al.  The Seismicity of Egypt, Arabia and the Red Sea: A Historical Review , 1994 .

[9]  J. Jackson,et al.  Earthquake mechanisms in the Hellenic Trench near Crete , 1990 .

[10]  Tom Parsons,et al.  Recalculated probability of M >= 7 earthquakes beneath the Sea of Marmara, Turkey , 2004 .

[11]  N. Ambraseys.  Seismic sea-waves in the Marmara Sea region during the last 20 centuries , 2002 .

[12]  Y. Altınok,et al.  Tsunamis Observed on and Near the Turkish Coast , 2000 .

[13]  N. Ambraseys.  The earthquake of 10 July 1894 in the Gulf of Izmit (Turkey) and its relation to the earthquake of 17 August 1999 , 2001 .

[14]  Demitris Paradissis,et al.  Global Positioning System constraints on plate kinematics and dynamics in the eastern Mediterranean and Caucasus , 2000 .

[15]  Y. Yılmaz,et al.  A short note on the geo-archeological significance of the ancient Theodosius harbour (İstanbul, Turkey) , 2009, Quaternary Research.

[16]  D. Kelletat,et al.  Tsunami relics in the coastal landscape west of Lisbon, Portugal , 2005 .

[17]  James Jackson,et al.  Active tectonics of the Alpine—Himalayan Belt between western Turkey and Pakistan , 1984 .

[18]  James Jackson,et al.  Active tectonics of the north and central Aegean Sea , 1991 .

[19]  N. N. Ambraseys,et al.  Long‐term seismicity of Istanbul and of the Marmara Sea region , 1991 .

[20]  James Jackson,et al.  The relationship between plate motions and seismic moment tensors, and the rates of active deformation in the Mediterranean and Middle East , 1988 .

[21]  N. Ambraseys.  The seismic sea wave of July 9, 1956, in the Greek archipelago , 1960 .

[22]  E. Guidoboni,et al.  Catalogue of ancient earthquakes in the Mediterranean area up to the 10th century , 1994 .

[23]  Harry Yeh,et al.  Advanced numerical models for simulating tsunami waves and runup , 2008 .

[24]  Ohta Yutaka.  A comprehensive study on earthquake disasters in turkey in view of seismic risk reduction , 1983 .

[25]  Berna Unutmaz,et al.  Seismically induced landslide at Degirmendere Nose, Izmit Bay during Kocaeli (Izmit)-Turkey earthquake , 2004 .

[26]  Y. Mart,et al.  Tsunami waves generated by the Santorini eruption reached Eastern Mediterranean shores , 2009 .

[27]  C. Yaltırak,et al.  Tectonic evolution of the Marmara Sea and its surroundings , 2002 .

[28]  Bertrand Meyer,et al.  Seismic hazard in the Marmara Sea region following the 17 August 1999 Izmit earthquake , 2000, Nature.

[29]  C. Yaltırak,et al.  Şarköy-Mürefte 1912 Earthquake's Tsunami, extension of the associated faulting in the Marmara Sea, Turkey , 2003 .

[30]  E. Guidoboni,et al.  Catalogue of earthquakes and tsunamis in the Mediterranean area from the 11th to the 15th century , 2005 .

[31]  A. Yalciner,et al.  Understanding tsunamis, potential source regions and tsunami-prone mechanisms in the Eastern Mediterranean , 2007 .

[32]  Simon McClusky,et al.  GPS constraints on Africa (Nubia) and Arabia plate motions , 2003 .

[33]  A. Şengör,et al.  Neotectonics of the Pontides: implications for ‘incompatible’ structures along the North Anatolian fault , 1983 .

[34]  G. Papadopoulos,et al.  Tsunami hazard in the Eastern Mediterranean: strong earthquakes and tsunamis in Cyprus and the Levantine Sea , 2007 .

[35]  N. Ambraseys,et al.  The saros–marmara earthquake of 9 August 1912 , 1987 .

[36]  Congress,et al.  Thera and the Aegean World. 3. Proceedings of the Third International Congress, Santorini, 3-9 September 1989. iii Chronology , 1992 .

[37]  M. Toksöz,et al.  Source mechanism of the Bartin earthquake of September 3, 1968 in northwestern Turkey: Evidence for active thrust faulting at the southern Black Sea margin , 1986 .

[38]  A. Barka,et al.  Heightened odds of large earthquakes near istanbul: An interaction-based probability calculation , 2000, Science.

[39]  J. Lander.  Seismological notes—September and October 1969 , 1966, Bulletin of the Seismological Society of America.

[40]  Fumihiko Imamura,et al.  Numerical Simulation as a Means of Warning for Near-Field Tsunamis , 1990 .

[41]  S. Tinti,et al.  The generating mechanisms of the August 17, 1999 İzmit bay (Turkey) tsunami: Regional (tectonic) and local (mass instabilities) causes , 2006 .

[42]  Fumihiko Imamura,et al.  Tsunamis in the Sea of Marmara - Historical documents for the past, models for the future , 2002 .