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Journals / Academic Platform Journal of Natural Hazards and Disaster Management / 2020 / Volume: 1 Issue: 2

Teleseismic Source Process of The October 30, 2020 Kuşadası Gulf –İzmir (Turkey) Earthquake (Mw=6.8)

Murat Utkucu(SAKARYA ÜNİVERSİTESİ)0000-0001-7528-937X
Emrah Budakoğlu(SAKARYA ÜNİVERSİTESİ)0000-0002-9897-2435
Şefik Ramazanoğlu(SAKARYA ÜNİVERSİTESİ)0000-0003-3691-5264
Pages
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Publication Date
2020-12-01
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Presence of a shallow asperity indicates that rupture reaches to the sea bottom which provides a reasonable explanation for the damaging tsunami.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:The October 30, 2020 Kuşadası Gulf-İzmir earthquake took place along a fault bounding Kuşadası Gulf in the South causing significant damage and loss of life, especially in İzmir city.
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Key Findings & Data:The finite-source inversion shows that the earthquake is due to failure of a two asperities with slip as high as 2.4 m and the rupture covers a fault area of 30 km x 20 km with unilateral propagation toward west.
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Conclusion & Impact:Presence of a shallow asperity indicates that rupture reaches to the sea bottom which provides a reasonable explanation for the damaging tsunami.
🔬Design:Modeling & Simulation
📍Scope:2020 Verileri
⚙️Variables:The 2020 Kuşadası Gulf-İzmir earthquake · teleseismic point-source inversion · teleseismic finite-source inversion

Abstract

The October 30, 2020 Kuşadası Gulf-İzmir earthquake took place along a fault bounding Kuşadası Gulf in the South causing significant damage and loss of life, especially in İzmir city. The earthquake damage due to the strong ground motion is augmented by a tsunami that caused a water inundation. In the present study the source properties of the earthquake are investigated by inverting teleseismic P waveforms. The complex waveforms are fit with two subevents in the point-source inversion that requires dominant normal faulting along a roughly E-W trending normal fault dipping north. The finite-source inversion shows that the earthquake is due to failure of a two asperities with slip as high as 2.4 m and the rupture covers a fault area of 30 km x 20 km with unilateral propagation toward west. The finite-source model defines two asperities that are located at hypocentral area and shallow depths near the west top corner of the fault. The earthquake rupture lasts for 17 s and released a seismic moment of 2.21 x 1019 Nt.m (MW=6.83). Presence of a shallow asperity indicates that rupture reaches to the sea bottom which provides a reasonable explanation for the damaging tsunami.

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Cite This Article

Utkucu, M., Budakoğlu, E., Ramazanoğlu, Ş. (2020). Teleseismic Source Process of The October 30, 2020 Kuşadası Gulf –İzmir (Turkey) Earthquake (Mw=6.8). Academic Platform Journal of Natural Hazards and Disaster Management, Volume: 1 Issue: 2. https://ajindex.com/articles/1260979

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