Dec. 2004 Sumatra quake was longest ever recorded

May 19, 2005 

According to new information about the earthquake of December 26, 2004, it was the longest-lasting earthquake ever recorded. 
"Normally, a small earthquake might last less than a second; a moderate sized earthquake might last a few seconds. This earthquake lasted between 500 and 600 seconds (about 10 minutes)," said Charles Ammon, associate professor of geosciences at Penn State University. "Globally, this earthquake was large enough to basically vibrate the whole planet as much as half an inch, or a centimeter. Everywhere we had instruments, we could see motions," Ammon continued. 
This quake released an amount of energy equal to a 100 gigaton bomb, according to Roger Bilham, professor of geological sciences at the University of Colorado. And that power lasted longer than any quake ever recorded. “No point on Earth remained undisturbed,” said Bilham.
Dec. 2004 Sumatra quake was longest ever recorded May 19 , 2005 According to new information about the earthquake of December 26 , 2004 , it was the longest - lasting earthquake ever recorded . " Normally , a small earthquake might last less than a second ; a moderate sized earthquake might last a few seconds . This earthquake lasted between 500 and 600 seconds ( about 10 minutes ) , " said Charles Ammon , associate professor of geosciences at Penn State University . " Globally , this earthquake was large enough to basically vibrate the whole planet as much as half an inch , or a centimeter . Everywhere we had instruments , we could see motions , " Ammon continued . This quake released an amount of energy equal to a 100 gigaton bomb , according to Roger Bilham , professor of geological sciences at the University of Colorado . And that power lasted longer than any quake ever recorded . “ No point on Earth remained undisturbed , ” said Bilham .
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