[time-nuts] UTC and leap seconds
magnus at rubidium.dyndns.org
Sat Jun 12 08:54:32 EDT 2010
On 06/12/2010 02:33 AM, Hal Murray wrote:
> jimlux at earthlink.net said:
>> The Chilean earthquake changed the angular rotation rate (or, probably more
>> accurately, changed the direction of the axis of rotation as well)
>> of the earth a small amount, as do most large earthquakes.
> Has anybody measured that?
> Is there a good URL on this? (predictions if not data) All I've found so
> far is a small NASA press release predicting 1.26 microseconds per day:
> (and a zillion news sources repeating it)
> 1 microsecond/day is 1 part in 1E11.
> From a friend in radio astronomy (VLBI):
> They had a lot of the right instruments in the right place.
> Graph of position (3 meters!):
3 meters in one direction and 60 in another.
> Description of the TIGO package:
Nice system. How do I get one on the back yard?
6 m VLBI antenna, 50 cm SLR scope, two H-masers, 2 Caesium beams, 4 Z-12
with choke ring antennas, UPSs, diesels, staff meeting room, 2
workshops. Accelerometers, metrological station...
> Letter from the director:
No progress report from that site what I could see.
More information about the time-nuts