On 30th October 2020, the eastern Aegean Sea was shaken by a Mw = 7.0 earthquake. The epicenter was located near the northern coasts of Samos island. This tectonic event produced an uplift of the whole island as well as several cases of infrastructure damage, while a small tsunami followed the mainshock. Underwater and coastal geological, geomorphological, biological observations and measurements were performed at the entire coast revealing a complex character for the uplift. At the northwestern part of the island, maximum vertical displacements of +35 ± 5 cm were recorded at the northwestern tip, at Agios Isidoros. Conversely, the southeastern part was known for its subsidence through submerged archaeological remains and former sea level standstills. The 2020 underwater survey unveiled uplifted but still drowned sea level indicators. The vertical displacement at the south and southeastern part ranges between +23 ± 5 and +8 ± 5 cm suggesting a gradual fading of the uplift towards the east. The crucial value of tidal notches, as markers of co-seismic events, was validated from the outcome of this study. The co-seismic response of Samos coastal zone to the 30th October earthquake provides a basis for understanding the complex tectonics of this area.

中文翻译：

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2020年10月30日萨摩斯地震触发的相对海平面变化和构造构造意义

2020年10月30日，爱琴海东部被7.0级Mw地震震撼。震中位于萨摩斯岛北部海岸附近。这次构造事件使整个岛屿隆起，几起基础设施遭到破坏，而小海啸随之而来。在整个海岸进行了水下和沿海地质，地貌，生物学观测和测量，揭示了隆升的复杂特征。在该岛的西北部，Agios Isidoros的西北角记录了最大垂直位移+35±5 cm。相反，东南部因淹没的考古遗迹和以前的海平面停滞而下沉。2020年的水下调查揭示了升高但仍淹没的海平面指标。南部和东南部的垂直位移范围在+23±5至+8±5 cm之间，这表明隆起向东逐渐消退。潮汐刻痕作为共震事件的标志物的关键价值已从这项研究的结果中得到验证。萨摩斯岛沿海地区对10月30日地震的同震响应为了解该地区的复杂构造提供了基础。