Hello
I know the recent Tsunami caused a considerable variation in the tidal
fluctuations around the world - well in my part anyway, but I have also
been told that after the big wobble caused by the Tsunami the magnetic
north pole has taken a quantum knock.

Does anybody know the facts of this story.

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

How would an astronomer know the change in the magnetic poles?

Bob wrote:
How would an astronomer know the change in the magnetic poles?

His compass, with deviation previously known, would no longer point
anywhere close to where he wanted to view stars.

tk

In article , Bob wrote:

How would an astronomer know the change in the magnetic poles?

Astronomers know everthing, just ask them........


Me who actually has asked a few.........

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.

Here's more than anyone needs to know on the topic:
http://www.ngdc.noaa.gov/seg/geomag/geomag.shtml

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

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.