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Workers Comp Earthquake

 

Chile

Earthquake

Chile Earthquake

Historically, Chile is one of the most seismically active regions in the world. It sits on the South American plate, directly above the subducting Nazca plate. This active subduction zone causes frequent earthquakes in the region.

Over the last century, Chile has experienced more than a dozen major earthquakes. The 1906 Great Valparaiso earthquake (Ms8.6), damaged much of central Chile and was felt from Peru to Buenos Aires. In the 1939 Chillan Ms8.3 earthquake, damage covered an area of 45,000 square kilometers. In the 1960 Chiloe events, an entire segment of the subducting Nazca plate ruptured with the main shock measuring Mw9.5, the largest instrumentally-recorded event in the world. In 1985, central Chile was hit again by a quake measuring Ms7.8, resulting in losses of US$1.8 billion. Damage from this earthquake was concentrated in the ports of Valparaiso and Viña del Mar.

While earthquake hazard in Chile is among the highest in the world, the country’s building codes and practices have been adapted to respond to this environment, helping to mitigate the level of financial risk. Since 1996, the RMS® Chile Earthquake Model has helped companies underwriting business in Chile to understand and quantify the interaction of hazard and building vulnerability to determine the impact on insured portfolio losses.

Model Highlights

140 source regions with earthquake generating potential

Earthquake modeling parameters developed in consultation with experts from the University of Chile

Comprehensive hazard database for soil amplification potential and liquefaction susceptibility

Vulnerability functions that account for local/regional construction differences and building code changes in 1950 and 1975

Building inventory database of national construction mix, used to develop default assumptions when construction class is not known

Geographic Scope

Covers all regions of Chile

Exposure Data Resolution

Data input supported at the following levels of resolution: latitude-longitude, city district (Santiago only), city, comuna (county equivalent), and CRESTA zone

 

Related Information

Chile Earthquake Brochure

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