Trivia Question 1/17/13 – California Earthquakes

Northridge EarthquakeToday we’re celebrating an anniversary.

The 6.7-magnitude Northridge earthquake hit at 4:31 a.m. on Jan. 17, 1994 — 19 years ago.

The powerful jolt flattened buildings, destroyed homes, damaged freeways, ignited fires and disrupted water and power.

The Northridge earthquake killed nearly three dozen people, injured 8,700 more, caused some $20 billion in damage and shattered the nerves of millions of Southern California residents.

QUESTION:

Although the Northridge earthquake was large it was not the largest in California.  What was the magnitude of the largest earthquake to ever hit California?

ANSWER:

7.9

EXPLANATION:

Earthquakes in California are common occurrences since the state is located on the San Andreas Fault, which cuts across California and forms the tectonic boundary between the Pacific and the North American Plate. There are many thousands of small earthquakes per year, most of them so small that they are not felt.  The earliest reported earthquake in California was felt in 1769 by the Portola expedition about 30 miles southeast of Los Angeles, probably near the San Andreas Fault.

The most destructive earthquake to date was the 7.8 magnitude 1906 San Francisco earthquake, in which over 3000 people perished in the earthquake and the fires that followed.

The largest recorded earthquake in California was the 1857 Fort Tejon earthquake, with an estimated magnitude of 7.9. This earthquake ruptured the San Andreas Fault from Parkfield to Wrightwood, a distance of 225 miles.

NET CHECK IN’s:

Tonight, we had a total of 29 people check in to the Net.  Of those, 7 had the correct answer. congratulations go out to:

  • W6ELL – Jim
  • K6FCC – Khalil
  • KD6JPD – Jerry
  • N6KAO – Joe
  • K6LMN – Roger
  • AF6TT – Leon
  • AD6UP – Louie

Thanks to everyone who helped us out by checking in to the Net.

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