The 30 October 2020 Aegean Sea Tsunami: Post-Event Field Survey Along Turkish Coast

Doğan, Gözde Güney; Yalçıner, Ahmet Cevdet; Yüksel, Yalçın; Ulutaş, Ergin; Polat, Orhan; Guler, I.; Şahin, Cihan; Tarih, Ahmet; Kânoğlu, Utku

doi:10.1007/s00024-021-02693-3

Cited by 57 publications

(41 citation statements)

References 29 publications

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“…This fact suggests that the stress accumulation caused by this earthquake on the region may be transferred to the north of Samos in addition to the ruptured fault tips where western and eastern extension of Ikaria basin and Büyük Menderes basin, respectively. The failure occurred on a fault NE-SW trending fault with an estimated strike of 288°, which is consistent with the findings of (Doğan et al, 2021). The coseismic inversion of dense GPS array in this study reveals a finite source of 43.1 km, which is close to 37 km given by (Elias et al, 2021) and about half of 80-100 km given by Doğan et al (2021).…”

Section: Discussionsupporting

confidence: 87%

“…In addition to that, fault plane solutions evaluated from both P-wave polarity data and moment tensor analysis with magnitude of up to Mw :4.9 in 2008-2012 show the predominance of normal faulting, along with strong contribution of the strike slip motion, with a N-S trending extension (Tan et al, 2014). After the 30 October 2020 Samos earthquake, other seismotectonic studies were carried out focusing on the fault model, the tsunami, the deformation field, and aftershocks that were the source of the earthquake in and around the island of Samos were evaluated (Çetin et al;2020/2;Ganas et al, 2020;Papadimitrou et al, 2020;Akıncı et al, 2021;Doğan et al, 2021;Elias et al, 2021;Evelpidou et al, 2021).…”

Section: Seismo-tectonic Settingmentioning

confidence: 99%

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GPS derived finite source mechanism of the 30 October 2020 Samos earthquake, Mw = 6.9, in the Aegean extensional region

Aktuğ¹,

Tiryakioğlu²,

Sözbi̇li̇r³

et al. 2021

Turkish J Earth Sci

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A submarine area close to the Turkish and Greek border between the cities of Samos-Greece and Seferihisar-Turkey has been shaked on October 30, 2020 by a Mw= 6.9 earthquake. In this study, the finite source mechanism of the Samos earthquake was investigated using geodetic methods and the coseismic behavior of the earthquake was modeled. The observed coseismic displacements at 62 sites were inverted for the fault geometry and the slips. The mainshock did not generate an on-land surface rupture. However, the uniform slip modeling shows a finite source of 43.1 km long and 16 km wide rupture, which slips 1.42 m along a north dipping normal fault extending from the Aegean Sea floor to a depth down to ~13 km. While the uniform slip model is consistent with the seismological solutions and provides a sufficient fit to the far field coseismic offsets, a distributed slip model is necessary to account for the near field coseismic displacements.

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Section: Discussionsupporting

confidence: 87%

Section: Seismo-tectonic Settingmentioning

confidence: 99%

GPS derived finite source mechanism of the 30 October 2020 Samos earthquake, Mw = 6.9, in the Aegean extensional region

Aktuğ¹,

Tiryakioğlu²,

Sözbi̇li̇r³

et al. 2021

Turkish J Earth Sci

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“…2). The dashed grey lines represent the origin time of the earthquake Long Tsunami Oscillations Following the 30 October 2020 M w 7.0 Aegean Sea Earthquake collected through post-tsunami field surveys (Dogan et al, 2021;Triantafyllou et al, 2021). We compared such measurements with simulated maximum coastal amplitudes in Fig.…”

Section: Numerical Modelling and The Actual Fault Planementioning

confidence: 99%

“…This is consistent with the results of Figure 11 Comparison of surveyed tsunami heights and run-up data (yellow circles and black rectangles) with computed maximum nearshore tsunami amplitude (peak coastal tsunami amplitude) using the south-dipping fault model (red bars) and north-dipping fault model (green bars) along the coasts of Turkey and Greece for the 30 October 2020 tsunami. The surveyed data are from Dogan et al (2021) and Triantafyllou et al (2021). The colormap for the offshore area shows maximum tsunami amplitudes (in meters) at each computational grid point during the entire tsunami simulations.…”

Section: Numerical Modelling and The Actual Fault Planementioning

confidence: 99%

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Long Tsunami Oscillations Following the 30 October 2020 Mw 7.0 Aegean Sea Earthquake: Observations and Modelling

Heidarzadeh

Pranantyo

Okuwaki

et al. 2021

Pure Appl. Geophys.

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

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Advancing Sustainable Energy: Exploring New Frontiers and Opportunities in the Green Transition

Soni,

Singh,

Mallick

et al. 2024

Advanced Sustainable Systems

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The current global scenario underlines the urgency of addressing energy consumption and its environmental implications. Contemporary international strategies aim to foster public awareness and engagement in sustainable energy initiatives. The World Environment Protection Commission aspires to qualify for an equitable transition toward energy‐efficient technologies, strategic policies, and achieving net‐zero carbon emissions. The principal aspiration is to enhance community understanding of energy and environmental policies. Furthermore, a root cause analysis reveals that understanding the foundational factors, both internal and external, underpinning the attainment of these objectives is of paramount importance. This study investigates the comparative advantages of renewable energy over non‐renewable sources. It conducts a thorough analysis of various factors, encompassing energy sourcing, variables, challenges, technological progress, and the deployment of energy‐efficient systems. Utilizing a strategic approach and conducting pre‐ and post‐analysis data evaluations, it aims to promote the adoption of sustainable practices for a greener future. Emphasizing the importance of international cooperation and the effective implementation of policies, this research underscores the critical role of practical action in fostering energy sustainability and environmental preservation.

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The 30 October 2020 Aegean Sea Tsunami: Post-Event Field Survey Along Turkish Coast

Cited by 57 publications

References 29 publications

GPS derived finite source mechanism of the 30 October 2020 Samos earthquake, Mw = 6.9, in the Aegean extensional region

GPS derived finite source mechanism of the 30 October 2020 Samos earthquake, Mw = 6.9, in the Aegean extensional region

Long Tsunami Oscillations Following the 30 October 2020 Mw 7.0 Aegean Sea Earthquake: Observations and Modelling

Advancing Sustainable Energy: Exploring New Frontiers and Opportunities in the Green Transition

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