ABSTRACT

A comprehensive geomorphological and structural mapping of the largest landslides in the central-eastern Southern Alps (NE Italy) is presented. Their occurrence in this Alpine sector is discussed in relation with structural geological features (bedding and faults), which are largely conditioned by the Giudicarie and Schio-Vicenza regional fault systems. Tectonic rock damaging here coexists with high relief stored energy and active deformation, which is testified by present seismicity and cumulative earthquake moment release. Based on updated rock failure ages, slope activity is concentrated at 5-3 and 1 ka, as primarily enhanced by climatic and seismic controls. The analysis of predisposing and driving factors poses the question of present and future landslide hazards for these densely inhabited Alpine valleys.

摘要

介绍了南阿尔卑斯山中东部（意大利东北）最大滑坡的综合地貌和结构图。讨论了它们在该阿尔卑斯地区的发生与构造地质特征（层理和断层）有关的情况，这些构造特征主要受Giudicarie和Schio-Vicenza区域断层系统的制约。这里的构造岩石破坏与高浮雕储能和主动变形共存，这由当前的地震活动性和累积的地震矩释放证明。根据更新的岩石破坏年龄，边坡活动主要集中在5-3和1 ka，这主要是受气候和地震控制的影响。对诱发因素和驱动因素的分析提出了这些人口稠密的高山山谷目前和未来滑坡灾害的问题。