EOSC 114 Lecture Notes - Lecture 13: Lahar, Hazard Analysis, Thermography

• School: UBC
• Department: Earth and Ocean Sciences
• Course: EOSC 114
• Professor: Lucy Porritt

Document Summary

Volcanic hazard: any potentially dangerous volcanic process (eg. 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 you and your family) Risk: (cid:374)ot o(cid:374)ly i(cid:374)(cid:272)ludes the pote(cid:374)tial (cid:373)o(cid:374)etary a(cid:374)d hu(cid:373)a(cid:374) losses, (cid:271)ut also i(cid:374)(cid:272)ludes a populatio(cid:374)"s vulnerability hazard maps. Note: volcanic eruptions have a much larger warning phase before the onset of eruption, and eruptions can last much longer than other natural hazards. Step 1: geology and mapping hazard maps. Step 1: geology and mapping hazard maps: map volcanic deposits, determine deposit type (lava flow, mud flow, pyroclastic flow) and distribution, determine age of deposits and eruption frequency, consider the risk. Seismology earthquakes: most important tool for monitoring and forecasting, small tremors, baseline monitoring essential to recognize changes abnormal behaviour.