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Post-event field observations in the İzmir–Sığacık village for the tsunami of the 30 October 2020 Samos (Greece) M w 6.9 earthquake
Acta Geophysica ( IF 2.0 ) Pub Date : 2021-05-24 , DOI: 10.1007/s11600-021-00582-w
M. Ersen Aksoy

The Mw 6.9 Samos earthquake occurred on 30 October 2020 11:51 offshore of the Samos island, west of the Kuşadası bay in the Aegean Sea. The earthquake caused destruction in villages of Greece and Turkey. The earthquake intensity reached a maximum of VII in İzmir–Bayraklı. A tsunami followed the shock and hit many villages around Samos and the Kuşadası bay. The Sığacık village of Izmir-Turkey suffered heavily from the tsunami. A post-event field survey in Sığacık has been conducted on 31 October 2020, and measurements of flow depth, run-up and limits of inundation were collected. The tsunami inundated the entire coastal area in Sığacık for at least 200 m inland. The maximum inundation has been observed NE of Sığacık. Sea water reached a distance of 391 ± 2 m. The maximum run-up is measured as 5.3 ± 0.3 m north of Sığacık. This is the highest value for the Samos tsunami measured along the Greek and Turkish coastal areas. The high run-up value is attributed to the elongated geometry of the Sığacık bay, the shallow seafloor, the low and flat land morphology in Sığacık and to the existence of four > 70-m-long E–W trending channels. The tsunami left limited amount of clay to sand size sediments forming a layer of less than 2–3 cm in the depression areas in Sığacık. The limited amount of evidence remained from the tsunami of this Mw 6.9 earthquake in Sığacık (a location with significant inundation and the highest run-up value) signifies the difficulty of palaeo-tsunami surveys for the Aegean Sea region.



中文翻译:

2020年10月30日萨莫斯(希腊)6.9级地震海啸在伊兹密尔–希格阿克村发生的事后实地观察

中号w ^6.9萨摩斯岛地震发生在2020年10月30日11:51,位于爱琴海Kuşadası湾以西的萨摩斯岛海上。地震在希腊和土耳其的村庄造成破坏。在伊兹密尔—贝拉克利,地震烈度最高达到七级。地震发生后,海啸席卷了萨摩斯岛和库萨达斯海湾的许多村庄。伊兹密尔土耳其的Sığacık村庄遭受了海啸的沉重打击。到2020年10月31日,在Sığacık进行了事后现场调查,并收集了水流深度,径流和淹没极限的测量值。海啸淹没了Sığacık的整个沿海地区,至少内陆200 m。已经观察到最大的淹没发生在Sığacık。海水达到391±2 m的距离。在锡耶克(Sığacık)以北的最大径距为5.3±0.3 m。这是沿希腊和土耳其沿海地区测得的萨摩斯海啸的最高值。较高的上升值归因于Sığacık海湾的拉长的几何形状,浅海底,Sığacık的低低平坦的土地形态以及存在四个> 70米长的E–W趋势通道。海啸使少量的粘土留给沙粒大小的沉积物,在锡克阿奇克(Sığacık)的洼地地区形成了一个少于2–3 cm的层。这次海啸仍然留下了有限的证据 海啸使少量的粘土留给沙粒大小的沉积物,在锡克阿奇克(Sığacık)的洼地地区形成了一个少于2–3 cm的层。这次海啸仍然留下了有限的证据 海啸使少量的粘土留给沙粒大小的沉积物,在锡克阿奇克(Sığacık)的洼地地区形成了一个少于2–3 cm的层。这次海啸仍然留下了有限的证据中号W¯¯在Sığacık6.9级地震(有显著淹没,最高助跑值的位置)表示为爱琴海地区古海啸调查的难度。

更新日期:2021-05-24
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