EOSC 114 Lecture Notes - Lecture 13: Stratovolcano, Interferometric Synthetic-Aperture Radar, Global Positioning System
20 Apr 2018
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Learning goals: learn to interpret a volcanic hazard map, explain how risk is assessed, list the different volcano monitoring techniques and the instruments that are used, evaluate the hazards to vancouver associated with an eruption from mt. Volcanic hazard: any potentially dangerous volcanic process (ex. lava flows, pyroclastic flows, ash fallout, lahars) Volcanic risk: any potential loss or damage as a result of the volcanic hazard that might be incurred by persons, property, etc. (eg. by you and your family) Risk not only includes potential monetary and human losses, but also includes a population"s vulnerability hazard maps. Step 1: geology and mapping hazard maps. Determine deposit type (lava flow, mud flow, pyroclastic flow, etc) and distribution. Determine age of deposits and eruption frequency. Most important tool for monitoring and forecasting. Baseline monitoring essential to recognize changes - anomalous behaviour. Gps (global positioning system) measures changes in position. Tm (tiltmeter) measure changes in angle of slope.
