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Article

Primary and Secondary Environmental Effects Triggered by the 30 October 2020, Mw = 7.0, Samos (Eastern Aegean Sea, Greece) Earthquake Based on Post-Event Field Surveys and InSAR Analysis

1
Department of Dynamic Tectonic Applied Geology, Faculty of Geology and Geoenvironment, National and Kapodistrian University of Athens, 15784 Athens, Greece
2
Department of Geography, Harokopio University, 17671 Athens, Greece
3
International Society for the Prevention & Mitigation of Natural Hazards, 10681 Athens, Greece
*
Author to whom correspondence should be addressed.
Academic Editor: Javier Elez
Appl. Sci. 2021, 11(7), 3281; https://doi.org/10.3390/app11073281
Received: 7 March 2021 / Revised: 29 March 2021 / Accepted: 31 March 2021 / Published: 6 April 2021
On 30 October 2020, an Mw = 7.0 earthquake struck the eastern Aegean Sea. It triggered earthquake environmental effects (EEEs) on Samos Island detected by field surveys, relevant questionnaires, and Interferometric Synthetic Aperture Radar (InSAR) analysis. The primary EEEs detected in the field comprise coseismic uplift imprinted on rocky coasts and port facilities around Samos and coseismic surface ruptures in northern Samos. The secondary EEEs were mainly observed in northern Samos and include slope failures, liquefaction, hydrological anomalies, and ground cracks. With the contribution of the InSAR, subsidence was detected and slope movements were also identified in inaccessible areas. Moreover, the type of the surface deformation detected by InSAR is qualitatively identical to field observations. As regards the EEE distribution, effects were generated in all fault blocks. By applying the Environmental Seismic Intensity (ESI-07) scale, the maximum intensities were observed in northern Samos. Based on the results from the applied methods, it is suggested that the northern and northwestern parts of Samos constitute an almost 30-km-long coseismic deformation zone characterized by extensive primary and secondary EEEs. The surface projection of the causative offshore northern Samos fault points to this zone, indicating a depth–surface connection and revealing a significant role in the rupture propagation. View Full-Text
Keywords: earthquake environmental effects; active tectonics; eastern Aegean; coseismic uplift; earthquake-induced landslides; interferometry; InSAR; ESI-07 earthquake environmental effects; active tectonics; eastern Aegean; coseismic uplift; earthquake-induced landslides; interferometry; InSAR; ESI-07
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MDPI and ACS Style

Mavroulis, S.; Triantafyllou, I.; Karavias, A.; Gogou, M.; Katsetsiadou, K.-N.; Lekkas, E.; Papadopoulos, G.A.; Parcharidis, I. Primary and Secondary Environmental Effects Triggered by the 30 October 2020, Mw = 7.0, Samos (Eastern Aegean Sea, Greece) Earthquake Based on Post-Event Field Surveys and InSAR Analysis. Appl. Sci. 2021, 11, 3281. https://doi.org/10.3390/app11073281

AMA Style

Mavroulis S, Triantafyllou I, Karavias A, Gogou M, Katsetsiadou K-N, Lekkas E, Papadopoulos GA, Parcharidis I. Primary and Secondary Environmental Effects Triggered by the 30 October 2020, Mw = 7.0, Samos (Eastern Aegean Sea, Greece) Earthquake Based on Post-Event Field Surveys and InSAR Analysis. Applied Sciences. 2021; 11(7):3281. https://doi.org/10.3390/app11073281

Chicago/Turabian Style

Mavroulis, Spyridon, Ioanna Triantafyllou, Andreas Karavias, Marilia Gogou, Katerina-Navsika Katsetsiadou, Efthymios Lekkas, Gerassimos A. Papadopoulos, and Issaak Parcharidis. 2021. "Primary and Secondary Environmental Effects Triggered by the 30 October 2020, Mw = 7.0, Samos (Eastern Aegean Sea, Greece) Earthquake Based on Post-Event Field Surveys and InSAR Analysis" Applied Sciences 11, no. 7: 3281. https://doi.org/10.3390/app11073281

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