Geology Cafe

Landslide Hazards—An Awareness Guide

Table of Contents

Introduction to Landslide Hazards

This guide focuses on landslide recognition and interpretation and is a review of erosional and depositional processes associated with floods and debris flows in mountainside canyons and on alluvial fans.

Abstract: Landslides play a significant role in the evolution of the landscape. This teacher's guide is an introduction to landslide features, processes, and hazards. Inquiry-oriented laboratory activities focus on processes associated with landslides and debris flow hazards in flood-prone mountain canyon areas. The activities also illustrate how sediments are deposited and sorted by streams flowing on alluvial fans. The laboratory activities are intended to show students how different kinds of materials (gravel, sand, and soil) behave in response to flooding in a confined stream channel area and on different angles of slopes. The experiments also allow students to observe how alluvial fans form at the mouths of canyons in mountainous area. The lesson and activities should yields results what many students (and teachers) find as interesting and provocative, especially related to the problems of urban development in mountainous areas, along streams valleys, and on alluvial fans. This website is laid out as a basic teaching lesson (an outline of basic concepts and understandings with associated guided activities). The lesson and laboratory activities are recommended for either secondary and undergraduate levels of science education.

< Example of a simple flume and basin experiment to simulate landslides and debris flows, and the formation of alluvial fans.