Dag Stenberg wrote:
Jeff wrote:

wrote:

One degree or less change, according to an Italian astronamer. Know
nothing about tidal change(s) and/or locations.


I can't believe the global change could be remotely near 1 degree.


One degree latitude is 60 miles, which may mean a lot if you are in a
narrow channel...

Dag Stenberg
As I said, I can't believe its remotely near that amount. And we're
talking about variation, not latitude. Actually, the variation
locally could change a lot, since local anomalies can get large, and
if the bottom shifted, the anomalies could shift with it. However,
for the global variation to change, the magnetic poles would have to
shift dramatically, and that hasn't been observed, AFAIK. The normal
annual shift of the poles is roughly 10 miles a year, which is a
variation shift of about one minute in many locations.