Alpine Mass Movements

Abstract

This course provides a foundational understanding of gravitational mass movements in Alpine regions, focusing on snow avalanches, debris flows, and rockfalls. It covers key mechanical concepts, recent research advancements, and practical applications, including risk management strategies. Students will also explore the mechanics behind modern numerical tools and use practical software in projects

Objective

Gravitational mass movements pose significant hazards, leading to numerous fatalities and extensive infrastructure damage worldwide. These events involve materials known as geomaterials, which comprise a complex mix of rocks, sediments, water, ice, and snow. This course is designed for civil, geotechnical, and mechanical engineering students seeking a deeper understanding of alpine mass movements, which exhibit remarkable mobility and destructive potential. By the end of the course, students will comprehend the driving factors behind the initiation and mobility of snow avalanches, debris flows, and rockfalls, enabling them to assess their impacts effectively. Moreover, they will grasp key mechanical and numerical concepts underlying classical simulation methods, including depth-averaged approaches, understanding their advantages and limitations. Students will also gain proficiency in utilizing standard commercial software for modeling various types of mass movements, including snow avalanches, debris flows, and rockfalls.

Content

This course encompasses the mechanics of snow avalanches, debris flows, and rockfalls through a blend of traditional lectures, hands-on developments, small-scale experiments, analytical exercises, and project work utilizing commercial software. It begins with a broad introduction to these processes, drawing on insights from laboratory experiments, real-world occurrences, and numerical simulations. Subsequently, we delve into snow avalanches, debris flows, and rockfalls, structuring the content around initiation, dynamics, impact, and risk management. Mitigation strategies and climate impacts are explored for each process. A specialized lecture delves into numerical modeling for geophysical mass flows, offering a thorough examination of historical perspectives and state-of-the-art methodologies. Topics include model calibration, event back-calculation, and predictions. Guided workshops are provided to assist students in utilizing the commercial software for their project work.

Resources