GEOL 106 Study Guide - Final Guide: Mass Wasting, Factor Analysis
31 Mar 2016
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Risk analysis for landslides (mass wasting is the downslope movement of solid earth materials by gravity. : determine the risk from that hazard in a particular area (risk = ph x sh). Determine the nature of slopes in the area (there are slopes everywhere). Use photographs taken from the air/space to look for ancient slide scars. Study the history of landslides in the area. What kind of mass movement was there in the past (liquefaction, rock slips, etc). What is the recurrence interval for events (use 14c dating of dead organic matter). Determine the geological and geographic factors in the area. Make landslide hazard maps (red zones are highly dangerous; green zones are not). Determine the potential human interactions with the landslides in the area. For landslides, carry out a safety factor analysis; we can actually reduce the ph. In rocks, the potential failure planes are (discontinuous) planes of weakness.
