why it happenedgreenspun.com : LUSENET : San Francisco History : One Thread
HOW DID THE SANFRANCISCO EARTHQUAKE HAPPEN IN 1989
-- mark wright (email@example.com), January 20, 2003
The Pacific Plate subducts underneath the North American Plate which causes earthquakes and volcanic eruptions affecting the US west coast primarily. The plates' movement is nearly constant, but the 1989 event was simply a larger than usual slip between these two plates which seems to occur at least once every 100 years.
-- Bill Williams (firstname.lastname@example.org), January 21, 2003.
Also, the plate on which SF sits moves northwest at a rate of 2 inches a year. For complete and up-to-date earthquake info, check out the USGS.
-- Piano Man (email@example.com), January 26, 2003.
what date did the goldengate bridge collapse
-- bryancalder (firstname.lastname@example.org), October 30, 2003.
It never has, though we gave it a good try packing it with pedestrians on the bridge's fiftieth anniversary in the mid-1980s.
-- Rosa (email@example.com), October 30, 2003.
17 october 1989
-- maria miller (firstname.lastname@example.org), November 04, 2003.
The Golden Gate Bridge never did collapse. It was the San Francisco Oakland Bay Bridge that partially collapsed on October 17, 1989. The bridge was closed for an extended period of time and it was a geat inconvenience. BART never did close so many folks used that facility to cross the bay.
-- Frank Grant (email@example.com), November 05, 2003.