SEISMOS-KOLUMBO - Seismological and structural investigations of the Kolumbo submarine volcano in the southern Aegean

地中海东部的火山灾害对当地社区、人类基础设施和旅游业构成重大威胁。因此，彻底了解各个火山和其下伏的岩浆系统，对于深入量化相关的火山灾害具有重大意义。拟议的研究项目将把重点放在爱琴海南部的科伦博海底火山上，该火山上一次喷发是在公元1650年，当时发生了猛烈的爆炸，引发了毁灭性的海啸。近几十年来，Kolumbo与反复发生的地震动乱有关，其原因仍未解决。今天，人们对科伦博岩浆管道系统的几何形状及其与供应附近圣托里尼火山口的岩浆系统的关系知之甚少。在SEISMOS-KOLUMBO项目中，我将详细分析Kolumbo火山下方的微震群活动，时间跨度为06/2006-03/2007，以阐明Kolumbo下方反复发生地震动乱的原因。我将进一步调查科伦博地区微震的地震衰减和散射记录，以成像火山下方和附近不同流体储集层和地质单元的几何形状和关系，这将有助于更好地了解科伦博海底火山。

Volcanic hazards in the eastern Mediterranean pose a significant threat to local communities, human infrastructure and tourism. A thorough understanding of the individual volcanoes and the underlying magmatic systems is therefore of great interest to provide profound quantification of the related volcanic hazards. The proposed research project will focus on the Kolumbo submarine volcano in the southern Aegean that last erupted in 1650 AD with a violent explosion generating a destructive tsunami. During the recent decades, Kolumbo was associated with recurring seismic unrest, the cause of which is still unresolved. Today, there is little knowledge about the geometry of the magma plumbing system of Kolumbo and its relation to the magmatic system feeding the nearby Santorini caldera. Within the SEISMOS-KOLUMBO project, I will analyze in detail the microearthquake swarm activity below the Kolumbo volcano, for the time span 06/2006-03/2007, to elucidate the causes of recurring seismic unrest below Kolumbo. I will further investigate records of seismic attenuation and scattering from microearthquakes in the Kolumbo region to image the geometry and relation of different fluid reservoirs and geological units below and near the volcano, which will lead towards a better understanding of the Kolumbo submarine volcano.