GEOSCAN, résultats de la recherche


AuteurCassidy, J F
SourceEncylopaedia of natural hazards; par Bobrowsky, P T (éd.); Encyclopedia of Earth Sciences Series vol. 41, 2013 p. 208-223, 104
Séries alt.Secteur des sciences de la Terre, Contribution externe 20100066
Documentpublication en série
DOI 104
Mediapapier; en ligne; numérique
Sujetssecousses séismiques; mécanismes de tremblement de terre; études séismiques; magnitudes des séismes; géophysique
Illustrationslocation maps; photographs; tables
ProgrammeÉvaluations ciblées des dangers dans l'Ouest du Canada, Géoscience pour la sécurité publique
Résumé(disponible en anglais seulement)
Earthquakes pose a major threat to human life and economic development. We are reminded of this year after year. A recent example being the tragedy of the January 12, 2010, magnitude 7 earthquake in Port au Prince, Haiti that resulted in the loss of more than 250,000 lives. That earthquake, like many earlier ones, clearly showed that the populations at most risk are those in developing countries with few or no guidelines for earthquake-resistant construction. This is the fastest growing population on Earth. The M 8.9 2012 Tohoku, Japan earthquake struck a country having modern building code, yet this earthquake still resulted in 15,854 deaths (most from the tsunami) and had an economic cost of more than ?235B - Making it the world’s most expensive natural disaster. However, we are making great progress in our ability to monitor earthquakes, study the details of the earthquake process, and estimate the ground shaking expected from future earthquakes. Reducing losses requires better building codes, better construction, and a population that is aware of the risks and actively involved in mitigation efforts. The first step is in knowing the risks. I hope that this entry contributes, at least in a small way, to knowing the risks. I hope that this entry helps inspire you to mitigate the risks of earthquakes, whether that is by drawing up a personal preparedness plan for your home and family, volunteering for a community organization, conducting research into hazard assessments, utilizing hazard information as an engineer or community planner, or as a politician. Earthquakes cannot be stopped, but the effects of earthquakes can be minimized.