[LEAPSECS] Far past and far future

Tony Finch dot at dotat.at
Wed May 25 05:52:13 EDT 2011

Rob Seaman <seaman at noao.edu> wrote:


> We had a spirited discussion here sometime in the last few years making

> the point that leap seconds (or equivalent adjustments) are not tightly

> coupled to tidal deceleration, rather the more stochastic (probably not

> the right word) shorter term geophysical variations that are

> flamboyantly pictured on Steve's page above create a requirement for

> timekeeping corrections all on their own. And without a Moon to temper

> the Earth's motions, the EOP values might be much more variable. So we

> might stop blaming the Moon for this timekeeping issue - it is intrinsic

> to life on Mother Earth.

Would the earth be slowing down so fast without the moon? There's some
tidal coupling in the earth-sun system but isn't it much smaller?

f.anthony.n.finch <dot at dotat.at> http://dotat.at/
Rockall, Malin, Hebrides: South 5 to 7, occasionally gale 8 at first in
Rockall and Malin, veering west or northwest 4 or 5, then backing southwest 5
or 6 later. Rough or very rough. Occasional rain. Moderate or good,
occasionally poor.

More information about the LEAPSECS mailing list