ABSTRACT

Ice cover changes have affected the Svalbard Islands during the Quaternary and conditioned a complex paraglacial landscape. In these remote and poorly vegetated arctic areas, the integration of field investigations and analysis of aerial images and DTMs or terrestrial laser scanning, is effective in the understanding landscape features and changes. In this work, we present the results of a geomorphological investigation and mapping in two sites along the Kongsfjorden in NW Svalbard (Ny-Ålesund and Blomstrandøya). A specific analysis focused on the slope landforms along the rock slopes. The study is based on fieldwork that defined deposits and landforms distribution of areas with different bedrock and geomorphological context. The analysis of the rock slopes focused on weathering and erosion processes, estimating erosion rates of 0.15–0.37 mm/yr over the Holocene, consistent with other areas around the Kongsfjorden and close to the highest values found in arctic areas.

摘要

第四纪期间，冰盖的变化影响了斯瓦尔巴群岛，并形成了复杂的冰川下景观。在这些偏远且植被欠佳的北极地区，将野外调查和航拍图像与DTM或地面激光扫描分析相结合，可以有效地理解景观特征和变化。在这项工作中，我们介绍了西北斯瓦尔巴特群岛（Kysfjorden）西北两个地区（Ny-Ålesund和Blomstrandøya）的地貌调查和制图结果。具体分析集中在沿岩石斜坡的斜坡地貌上。该研究基于野外工作，该工作定义了具有不同基岩和地貌背景的区域的沉积物和地貌分布。对岩石边坡的分析集中在风化和侵蚀过程上，估计侵蚀速率为0.15-0。