Earthquakes in Western CanadaEarthquakes in Western Canada

What causes earthquakes?What causes earthquakes?

National Geographic Video on the Cause of on the Cause of Earthquakes Earthquakes

Planning for Giant Earthquakes

2007 Major Earthquakes in Canada2007 Major Earthquakes in Canada

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BC

Quebec

Yukon

Nova Scotia

Nunavut

New Brunswick

Ontario

Western Canada Earthquakes in the Last 30 Days There are many earthquakes every day, There are many earthquakes every day,

but only a small number of these but only a small number of these quakes are noticeable and even fewer quakes are noticeable and even fewer result in damage.result in damage.

Earthquake EffectsEarthquake Effects

Volcanic EruptionsVolcanic Eruptions

Devastation from shaking Devastation from shaking (destroys houses and (destroys houses and kills people)kills people)

TsunamiTsunami

What are some effects of earthquakes?What are some effects of earthquakes?

Mt St. Helens Eruption 1980

Mt St Helens Video (7mins on)

•540 million tons of ash fell over an area of more than 22,000 square miles!!!!•350 times more powerful than the explosions of the first nuclear bombs

Big Earthquakes in Our AreaBig Earthquakes in Our Area

Several MAJOR earthquakes have hit B.C.and Western North America in the last 100+Years

• 1906 San Francisco 8.3 Richter Scale1906 San Francisco 8.3 Richter Scale

• 1967 Anchorage, Alaska 9.2 Richter Scale1967 Anchorage, Alaska 9.2 Richter Scale

1906 San Francisco Earthquake1906 San Francisco Earthquake

Fire destroyed 500 city blocksFire destroyed 500 city blocks

5500 killed, 300,000 5500 killed, 300,000 homelesshomeless

Looters shot (500 killed)Looters shot (500 killed)

$5.1 Billion of damage $5.1 Billion of damage (in 2006 $)(in 2006 $)

1906 San Francisco Earthquake1906 San Francisco Earthquake

1964 Alaska Earthquake1964 Alaska Earthquake

• HUGE!!! 123 people dead and over $100million in damages

•Raised land by 30 feet and some areas dropped by 8 feet

•Tsunamis occurred

Port Alberni TsunamiPort Alberni Tsunami

Port Alberni TsunmaiPort Alberni Tsunmai

•375 Houses Damaged 55 houses lost

•Extensive flooding

You Tube: Cascadia Subduction ZoneYou Tube: Cascadia Subduction Zone

Earthquake Simulation Earthquake Simulation