ABSTRACT

Deep-seated gravitational slope deformation (DsGSD) represents a relevant geological-geomorphological feature of the landscape and has drawn scientific attention for the past several decades. During a detailed fieldwork in the Ligurian Alps, we identified areas (larger than ca 5 km2), characterized by very low percentage of outcrops, with rock blocks on the watershed and many morpho-tectonic evidences. Through the integration of geological-geomorphological mapping, structural data, photo interpretation, GIS-based analyses, we identified a number of typical DsGSDs. The example here described is one major complex-sagging-type DsGSD that is not present in national land planning and/or management databases but that is likely at the origin of the large-scale landslides which affected the villages of the area. This DsGSD is also located within the Beigua UNESCO Global Geopark, in an area of unique natural and historical value. This study once again highlights the importance of ground truth observations as the basis for further investigations.

摘要

深层重力斜坡变形（DsGSD）代表了景观的相关地质-地貌特征，并在过去的几十年中引起了科学关注。在利古里亚阿尔卑斯山进行的详细野外调查中，我们确定了面积（大于5平方千米），其特征是露头的百分比非常低，分水岭上有岩石块，并且有许多构造构造的证据。通过整合地质-地貌图，结构数据，照片解释，基于GIS的分析，我们确定了许多典型的DsGSD。这里描述的示例是一种主要的复杂陷落型DsGSD，它没有出现在国家土地规划和/或管理数据库中，但可能是影响该地区村庄的大规模滑坡的起源。该DsGSD也位于北瓜联合国教科文组织全球地质公园内，具有独特的自然和历史价值。这项研究再次强调了地面实况观察作为进一步调查基础的重要性。