Lakes, as well as engineered reservoirs, can be affected by geohazards at various temporal and spatial scales. Examples of such geohazards include gravitational mass movements that occur either subaqueously at the lateral slopes of lakes, or subaerially as rockfalls or landslides that enter water bodies. It has been documented that both these types of mass movements have caused lake tsunamis in the past. Other examples of geohazards in lakes can be caused by meteorological and volcanic phenomena, as well as human activity. As shorelines of many lakes are densely populated, the knowledge and assessment of lacustrine geohazards is essential. Apart from such geohazards directly related to the lake itself, lacustrine sediments can record a wide range of geohazards affecting their catchment, such as volcanic activity, earthquake shaking, and more climate related hazards such as floods and droughts. Lakes thus provide valuable archives to analyse recurrence patterns of geohazards, which can feed into hazard assessments. Due to their relatively small scales compared to the marine realm, lakes constitute very valuable environments for analysing, modelling, and monitoring natural hazards. However, the lakes’ small scales also constitute an obstacle for early warning systems related to lacustrine geohazards.
We encourage contributions by experts from science and praxis that address the broad topic “Geohazards in lacustrine settings”, from hazard documentation to mitigation strategies.
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