Earthquake

Mt. St. Helens- May 18, 1980

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Mt. St. Helens- May 18, 1980

By #DiarmuidO'Dea I remember with utter clarity hearing Mt. St. Helens erupt early Sunday morning May 18, 1980. I was in Vancouver, Canada loading my golf clubs into my lovely MGB sports car. I was going to play golf at Squamish Valley GC . I didn't know what the sound was at that moment, but it was loud and clear. Vancouver, Canada is approximately 300 miles away from Mt. St. Helens. Mt. St. Helens lies north of Portland, Oregon and south of Seattle, Washington near the town of Castle Rock, Washington.  I confirmed that I heard the eruption during a 2012...

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Mexico's Earthquake Early Warning System

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Mexico's Earthquake Early Warning System

By Diarmuid O'Dea   Mexico has one of the only three earthquake early warning systems on the globe. It was needed after its calamitous 1985 Mexico City earthquake killed approximately 10,000 persons and injured over 30,000.  Like the Pacific Northwest of North America there is a significant  subduction zone on the west coast of Mexico. Small earthquakes in the the three states that border the coast are common. Most alarming is the possibility of a significant earthquake and its impact on Mexico City 350 kilometres to the east. The following video by Al-Jazeera explains how the system works.  Mexico City,...

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California Earthquake Authority

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California Earthquake Authority

Californians can purchases residential earthquake insurance through the California Earthquake Authority (CEA). There are four groups that are eligible: homeowners, renters, condo owners and mobile-home owners. In addition to premises, the insurance will cover contents and some additional items.  How does the State of California manage Earthquake Preparedness In 1994, the unexpected Northridge earthquake near Los Angeles left residential insurance companies unprepared for the cost of damage claims. Within months, many residential insurance companies were refusing to offer any insurance to homeowners or if they did it was very expensive. The housing market  was in jeopardy.   In response, the...

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California's Earthquake Management Program

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California's Earthquake Management Program

How is Earthquake Preparedness, Mitigation, and Resilience administered by the State of California? The State of California coordinates earthquake policy and process with the United States government. Primarily they work with the U.S. Department of the Interior and its agency the United States Geological Survey as well as the Federal Emergency Management Agency (FEMA). FEMA is part of the U.S. Department of Homeland Security. In addition, local authorities have earthquake mitigation, preparedness and response  programs like Ready LA or SF72.org in San Francisco.   above: Earthquake danger zones   The State of California has two main government agencies that manage the...

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Ottawa is Earthquake City

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Ottawa is Earthquake City

The City of Ottawa sits right in the middle of earthquake danger. Many earthquakes in Central Canada originate in the Ottawa-Bonnechere Graben which is a trench that lies between the Mattawa and Petawawa faults. The Ottawa river essentially flows through the fissure between theses two faults. Ottawa is also susceptible from seismic activity coming from movements in the North American Continental Plate.  The danger in Ottawa is magnified by the fact that the City sits on layers of Leda Clay which for complex reasons accelerates the impact of Shear (S waves) and causes more damage than if the City sat on...

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