Reconnaissance of 2020 M 7.0 Samos Island (Aegean Sea) earthquake

Date

2021-08-01

Author

Çetin, Kemal Önder
Sextos, Anastasios
Stewart, Jonathan P.

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

258
views

0
downloads

The Samos Island (Aegean Sea) Earthquake occurred on 30 October 2020. It produced a tsunami that impacted coastal communities, ground shaking that was locally amplified in some areas and that led to collapse of structures with 118 fatalities in both Greece and Turkey, and wide-ranging geotechnical effects including rockfalls, landsliding, and liquefaction. As a result of the global COVID-19 pandemic, the reconnaissance of this event did not involve the deployment of international teams, as would be typical for an event of this size. Instead, following initial deployments of separate Greek and Turkish teams, the reconnaissance and documentation efforts were managed in a coordinated manner with the assistance of international partners. This coordination ultimately produced a multi-agency joint report published on the 2-month anniversary of the earthquake, and this special issue. This paper provides an overview of the reconnaissance activities undertaken to document the effects of this important event and summarizes key lessons spanning topic areas from seismology to emergency response.

Subject Keywords

Reconnaissance , Fault rupture , Tsunami , Ground motion , Site response, Ground failure , Infrastructure , Seismic codes, Emergency response

URI

https://hdl.handle.net/11511/92013

Journal

BULLETIN OF EARTHQUAKE ENGINEERING

DOI

https://doi.org/10.1007/s10518-021-01212-y

Collections

Department of Civil Engineering, Article

Suggestions

OpenMETU
Core

Predictive performance of current ground motion models for recorded strong motions in 2020 Samos Earthquake Akbaş, Burak; Gülerce, Zeynep; Sopacı, Eyüp; Özacar, Atilla Arda; Önder, Fatih M.; UZEL, BORA; Can, Gizem; Çakır, Elife; Ilgaç, Makbule; Saltoğlu, Nazlı; Söylemez, Berkan; Askan, Aysegul; Cetin, Kemal Onder; Unutmaz, Berna (2022-01-01) The 2020 M7.0 Samos earthquake had occurred on the north of Samos Island; however, structural damage was observed in İzmir-Bayraklı, which is located approximately 65 km away from the epicenter. Strong ground motions recorded in İzmir Bay showed unique site amplifications, mostly due to the interaction between the basin and deep alluvial deposit response. The objective of this study is to evaluate the predictive performance of current ground motion models (GMMs) for estimating the recorded strong motions, e...
Geotechnical reconnaissance findings of the October 30 2020, Mw7.0 Samos Island (Aegean Sea) earthquake Ziotopoulou, Katerina; et. al. (2022-11-01) On October 30, 2020 14:51 (UTC), a moment magnitude (Mw) of 7.0 (USGS, EMSC) earthquake occurred in the Aegean Sea north of the island of Samos, Greece. Turkish and Hellenic geotechnical reconnaissance teams were deployed immediately after the event and their findings are documented herein. The predominantly observed failure mechanism was that of earthquake-induced liquefaction and its associated impacts. Such failures are presented and discussed together with a preliminary assessment of the performance of ...
Numerical modelling of the 1766 (May) earthquake tsunami scenario along the northern coasts of Marmara Sea, Turkey Vardar, Hande; Alpar, Şaban Bedri; Yalçıner, Ahmet Cevdet (null; 2018-04-09) Following the recent 1999-earthquake disaster and its associated tsunami that occurred in the Izmit Gulf, eastern part of the Marmara Sea; much research has been carried out to determine the tsunami potential, as well as their possible effects along the adjacent coast. Based on the available archival data, many tsunamis (e.g. 989, 1343, 1509, 1766, 1894 and 1912) have affected the low-lying coasts, bays, estuaries, straits and possibly coastal lagoons along the northern coast of the Marmara Sea. In the pres...
Characteristics of the 2020 Samos earthquake (Aegean Sea) using seismic data Kiratzi, Anastasia; Papazachos, Costas; Özacar, Atilla Arda; PINAR, ALİ; Kkallas, Charis; Sopaci, Eyup (2021-01-01) The 30 October 2020 Samos earthquake (Mw 7.0) ruptured an east–west striking, north dipping normal fault located offshore the northern coast of Samos Island, previously inferred from the bathymetry and regional tectonics. This fault, reported in the fault-databases as the North Samos and/or Kaystrios Fault, ruptured with almost pure dip-slip motion, in a region where both active extension and strike-slip deformation coexist. Historical information for the area confirms that similar ~ Mw7 events had also occ...
Simulation of seismic triggering and failure time perturbations associated with the 30 October 2020 Samos earthquake (Mw 7.0) Sopaci, Eyup; Özacar, Atilla Arda (2021-01-01) The 30 October 2020 Samos earthquake (Mw = 7.0) ruptured a north-dipping offshore normal fault north of the Samos Island with an extensional mechanism. Aftershocks mainly occurred at the western and eastern ends of the rupture plane in agreement with the Coulomb static stress changes. Mechanism of aftershocks located west of the rupture supported activation of the neighboring strike-slip fault almost instantly. In addition, a seismic cluster including events with Mw similar to 4 has emerged two days later a...

Citation Formats

K. Ö. Çetin, A. Sextos, and J. P. Stewart, “Reconnaissance of 2020 M 7.0 Samos Island (Aegean Sea) earthquake,” BULLETIN OF EARTHQUAKE ENGINEERING, pp. 0–0, 2021, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/92013.