Andrey ZAYTSEV, Irina KOSTENKO, Andrey KURKIN, Efim PELINOVSKY, Ahmet Cevdet YALÇINE

The depth effect of earthquakes on tsunami heights in the Sea of Okhotsk

The earthquake of magnitude Mw = 8.3 that occurred on 24 May 2013 in the Sea of Okhotsk was the most powerful earthquake in the region. Fortunately, the generated tsunami was small because of the deep focal depth (609 km) and was only detected by the nearest Deep-ocean Assessment and Reporting of Tsunamis (DART) buoy records. However, the event highlighted the fact that any earthquakes with similar magnitudes at shallower focal depths would have caused considerable tsunamis. In order to evaluate the effects of possible tsunamis in the Sea of Okhotsk, we simulated water displacements due to the 24 May 2013 event and compared the results with the measurements. Moreover, the simulations were extended using different shallower focal depths. In simulations we calculated the coastal amplifications and possible heights of the tsunami waves along the coast of the Sea of Okhotsk.

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Aki K (1966). Generation and propagation of G waves from the Niigata earthquake of June 16, 1964. Bull Earthq Res Inst 44: 73-88.
Baranov B V, Lobkovskii LI, Kulikov EA, Rabinovich AB, Jin YK, Dozorova KA (2013). Landslides on the eastern slope of Sakhalin Island as possible tsunami sources. Doklady Earth Sciences 449: 354-357.
Bolshakova AV, Nosov MA (2011). Parameters of tsunami source versus earthquake magnitude. Pure Appl Geophys 168: 2023-2031.
GSRAS (2016). Geological Survey of the Russian Academy of Sciences, Geophysical Survey. Obninsk, Russia: GSRAS. Available online at http://www.ceme.gsras.ru/cgi-bin/ceme/equakes.pl?l=1.
Hebert H, Schindele F, Altinok Y, Alpar B, Gazioglu C (2005). Tsunami hazard in the Marmara Sea (Turkey): a numerical approach to discuss active faulting and impact on the Istanbul coastal areas. Mar Geol 215: 23-43.
Hebert H, Shindele F, Heinrich P (2001). Tsunami risk assessment in the Marquesas Islands (French Polynesia) through numerical modeling of generic far-field events. Nat Hazard Earth Syst 1: 233-242.
Kanamori H, Anderson DL (1975). Theoretical basis of some empirical relations in seismology. Bull Seismol Soc Am 65: 1073-1095.
Kim XS, Rabinovich AB (1990). Tsunamis on the north-west coast of the Okhotsk Sea. In: Natural Catastrophes and Hazards in the Far East Region. Vladivostok, Russia: Far East Branch of the USSR Academy of Sciences Press, pp. 206-218.
Lay T, Ammon CJ, Kanamori H, Yamazaki Y, Cheung KF, Hutko AR (2011). The 25 October 2010 Mentawai tsunami earthquake (Mw 7.8) and the tsunami hazard presented by shallow megathrust ruptures. Geophys Res Lett 38: L06302.
Levin B, Nosov M (2009). Physics of Tsunamis. Doetinchem, the Netherlands: Springer.
Lobkovsky LI, Mazova RKh, Kataeva LYu, Baranov BV (2006). Generation and propagation of catastrophic tsunamis in the Sea of Okhotsk basin: possible scenarios. Doklady Earth Sciences 410: 1156-1159.
Lobkovsky LI, Rabinovich AB, Kulikov EA, Ivashchenko AI, Fine IV, Thomson RE, Ivelskaya TN, Bogdanov GS (2009). The Kuril earthquakes and tsunamis of November 15, 2006, and January 13, 2007: observations, analysis, and numerical modeling. Oceanology 49: 166-181.
Manshinha L, Smylie DE (1971). The displacement fields of inclined faults. Bull Am Seismol Soc 61: 1433-1440.
Matias LM, Cunha T, Annunziato A, Baptista MA, Carrilho F (2013). Tsunamigenic earthquakes in the Gulf of Cadiz: fault model and recurrence. Nat Hazard Earth Syst 13: 1-13.
NAMI DANCE (2016). NAMI DANCE Manual. Ankara, Turkey: METU. Available online at http://namidance.ce.metu.edu.tr/pdf/NAMIDANCE-version-5-9-manual.pdf.
Newman AV, Hayes G, Wei Y, Convers J (2011). The 25 October 2010 Mentawai tsunami earthquake, from real-time discriminants, finite-fault rupture, and tsunami excitation. Geophys Res Lett 38: L05302.
Okada Y (1985). Surface deformation due to shear and tensile faults in a half-space. Bull Seismol Soc Am 75: 1135-1154.
Okada Y (1995). Simulated empirical law of coseismic crustal deformation. J Phys Earth 43: 697-713.
Okal E, Saloor N, Freymueller J, Steblov G, Kogan M (2014). The implosive component of the 2013 Okhotsk Sea deep earthquake: evidence from radial modes and constraints from geodetic data. Geophysical Research Abstracts 16: EGU2014-16456.
Romano F, Piatanesi A, Lorito S, Agostino ND, Hirata K, Atzori S, Yamazaki Y, Cocco M (2012). Clues from joint inversion of tsunami and geodetic data of the 2011 TohokuOki earthquake. Scientific Reports 2: 1-8.
Tatevossian RE, Kosarev GL, Bykova VV, Matsievskii SA, Ulomov IV, Aptekman ZhYa, Vakarchuk RN (2014). A deep-focus earthquake with Mw = 8.3 felt at a distance of 6500 km. Izvestiya Physics Solid Earth 50: 453-461.
Tikhonov IN, Lomtev VL (2015). Shallow seismicity of the Sea of Okhotsk and its probable tectonic nature. Seismic Instruments 51: 111-128.
Ulutaş E (2013). Comparison of the seafloor displacement from uniform and non-uniform slip models on tsunami simulation of the 2011 TohokuOki earthquake. J Asian Earth Sci 62: 568-585.
Ulutaş E, Inan A, Annunziato A (2012). Web-based tsunami early warning system: a case study of the 2010 Kepulaunan Mentawai earthquake and tsunami. Nat Hazard Earth Syst 12: 1855-1871.
USGS (2016). Magnitude 8 and Greater Earthquakes Since 1900. Reston, VA, USA: USGS. Available online at http://earthquake.usgs.gov/earthquakes/eqarchives/year/mag8/magnitude8_1900_date.php.
Uyeda S, Kanamori H (1979). Back-arc opening and the mode of subduction. J Geophys Res 84: 1049-1061.
Ye L, Lay T, Kanamori H, Koper KD (2013). Energy release of the 2013 Mw 8.3 Sea of Okhotsk earthquake and deep slab stress heterogeneity. Science 341: 1380-1384.
Yokota Y, Koketsu K, Fujii Y, Satake K, Sakai S, Shinohara M, Kanazawa T (2011). Joint inversion of strong motion, teleseismic, geodetic, and tsunami datasets for the rupture process of the 2011 Tohoku earthquake. Geophys Res Lett 38: L00G21.
Zaitsev AI, Kovalev DP, Kurkin AA, Levin BW, Pelinovsky EN, Chernov AG, Yalciner A (2008). The Nevelsk tsunami on August 2, 2007: instrumental data and numerical modeling. Doklady Earth Sciences 421: 867-870.