Many massive debris flows are related to volcanism, as in 1985 when a volcanic eruption in Columbia caused debris flows that buried a village and about 20,000 people. Why are volcanoes often the sites of massive debris flows?
Answer to relevant QuestionsCan mass movements be predicted?When does precipitation become surface runoff (Fig. 8.1)?Several factors affect the amount of erosion by running water that can occur in a given area, but two are generally the most important. Name them.How does vegetation affect the amount of runoff?Figure 9.1 is a generalized longitudinal profile of a river, with elevations above sea level plotted against distance from the mouth of the river. What does it show?
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