----- Original Message ----- From: "John E Burgar" <[EMAIL PROTECTED]> To: <time-nuts@febo.com> Sent: Friday, May 16, 2008 12:26 AM Subject: [time-nuts] Change to Earths rotation rate due to Chinese earthquake
> Have any of your members seen any data regarding a change to the earths > rotation rate due to the recent Chinese earthquake? I seem to recall that > the Banda Aceh earthquake in December a few years ago had a measurable > impact on the rotation rate. Many regards to the many extremely > knowledgeable members of this group, John B. I believe the December quake you reference is the 8.4-magnitude 2004 Indonesian earthquake It supposedly changed the earths length of day: -2.676 microseconds or the day became shorter by 0.0000027 seconds. As I understand it, the length of the day can be measured with an accuracy of about 20 microseconds. What was affected was the so-called Chandler Wobble. Some believe it is the cause of the earthquakes rather than the effect. This is an extremely interesting subject. I haven't seen anything on the present quake but it usually takes a while for anything to be published. You might find more searching Chandler Wobble Phil _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
