Brienz/Brinzauls slope instability and potential landslide-dammed lake

布里恩茨/布林扎尔斯斜坡不稳定和潜在的滑坡堰塞湖

• 批准号: 453446435
• 负责人: Professor Dr. Florian Amann, Ph.D.
• 金额: --
• 依托单位: Lehrstuhl für Ingenieurgeologie und Hydrogeologie (LIH)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2020
• 资助国家: 德国
• 起止时间: 2019-12-31 至 2023-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/453446435?language=en
• 关键词: Brienz; Brinzauls; slope; instability; potential

Blocking of river courses by landslides is a common global phenomenon. Traces of past river blockages include lacustrine sediments in the former impoundment (where unusually large fans tell of quiescent waters), knickpoints in the river profile, river piracy, delta-sediments upstream of the former lake and directly downstream of the dam site, dam-breach flood sediments, and remnants of the dam itself (if not completely eroded) flanking a prominent breach. However, lacustrine sediments in Alpine river valleys can also have very different origins, such as glacial or tectonic. Deciphering the origin of lacustrine sediments at an active, slow-moving landslide in the Swiss Alps is the goal of this project since this site is currently showing accelerated slope movements. Knowing whether this site has experienced movements rapid enough to block the river in the past will help us guide future investigations and better understand the dynamics of this inhabited slope.

泥石流堵塞河道是全球普遍现象。过去河流堵塞的痕迹包括前蓄水池中的湖泊沉积(在那里，异常大的扇子告诉人们平静的水域)，河流剖面上的关键点，河流海盗，前湖上游和大坝直接下游的三角洲沉积，决口洪水沉积，以及大坝本身的残余(如果不是完全被侵蚀的话)在突出的决口两侧。然而，阿尔卑斯河流域的湖泊沉积物也可能有非常不同的来源，如冰川或构造。破译瑞士阿尔卑斯山一次活动的、缓慢移动的滑坡的湖泊沉积物的来源是这个项目的目标，因为这个地点目前显示出加速的斜坡运动。了解这个地点过去是否经历了足够快的运动来堵塞河流，将有助于我们指导未来的调查，并更好地了解这个有人居住的斜坡的动态。