Compass declination rapidly changing...

x39 · Feb 23, 2011

Interesting article regarding movement of the magnetic pole. If you're using dated maps it would be a good idea to mark current declination on them...
http://articles.sun-sentinel.com/20...rt-lauderdale-hollywood-international-airport

sicily02 · Feb 23, 2011

Thanks for posting that link.

Bryan

Cascade_mtn's · Feb 23, 2011

I read a very similar article. It's very good information to have/be aware of. I still have all the topo maps from when I was a kid. My Dad gave them to me, but I don't use them. I just seem to have a "thing" for maps.

Thomas Linton · Feb 23, 2011

http://www.ngdc.noaa.gov/geomag

Cascade_mtn's · Feb 23, 2011

Thomas Linton said:
http://www.ngdc.noaa.gov/geomag

That's a GREAT web site Thomas. Thank you..... :thumbup:

bladerique · Feb 23, 2011

There's some speculation that we're due for a pole shift, or flip.

jaymeister99 · Feb 23, 2011

bladerique said:
There's some speculation that we're due for a pole shift, or flip.

Yup. California might fall into the ocean too.:barf:

Trace Rinaldi · Feb 23, 2011

bladerique said:
There's some speculation that we're due for a pole shift, or flip.

Whats the deal? I've heard some about that but am far from well informed on the subject. Anyone here have the difinitive poop on this?

bladerique · Feb 23, 2011

Trace Rinaldi said:
Whats the deal? I've heard some about that but am far from well informed on the subject. Anyone here have the difinitive poop on this?

It's not my area of expertise, but I'll try to find what I was reading a couple weeks ago.

This isn't what I was reading, but it's a overview of the topic:

http://en.wikipedia.org/wiki/Geomagnetic_reversal

jaymeister99 · Feb 23, 2011

Trace Rinaldi said:
Whats the deal? I've heard some about that but am far from well informed on the subject. Anyone here have the difinitive poop on this?

There is absolutely nothing difinitive about it. There is nothing to support this other than 2012 doomsday prophets. Like I said, California is going into the ocean next year too.

bladerique · Feb 23, 2011

jaymeister99 said:
Yup. California might fall into the ocean too.:barf:

There have been plenty of magnetic reversals in this planet's history.

jaymeister99 · Feb 23, 2011

bladerique said:
There have been plenty of magnetic reversals in this planet's history.

Yes there has been. But the shifts take place over several thousands of years. It doesn't just happen one day or year or decade, or even millenium. It gradually shifts like it always has.

bladerique · Feb 23, 2011

jaymeister99 said:
Yes there has been. But the shifts take place over several thousands of years. It doesn't just happen one day or year or decade, or even millenium. It gradually shifts like it always has.

Again, this not being my expertise, I could be wrong, but IIRC, they often happen much faster than that.

bladerique · Feb 23, 2011

I'm off to the gym, but this may be helpful:

http://www.sciencedaily.com/releases/2004/04/040408085209.htm

Seems like these events can be slow or fast, though they are mostly slow from what I just skimmed.

I still can't find the other stuff I was reading. IIRC, there are a couple of screwy things going on outside of magnetic North accelerating it move.

jaymeister99 · Feb 23, 2011

bladerique said:
Again, this not being my expertise, I could be wrong, but IIRC, they often happen much faster than that.

The equator is about 40,000km, so I would expect pole to pole to be around 20,000km. I think I remember hearing mag north was moving 40km a year. At that pace we have 500 years to complete a magnetic pole shift. So yeah, theoretically (I would think) it could be a heck of a lot sooner.

But magnetic north has always shifted. The current trend doesn't mean there is going to be a pole shift over the next 500 years. I'm not an expert but I doubt it ever made a beeline for the opposite pole, but who knows?

Where's a geologist when you need one?

DennisStrickland · Feb 23, 2011

if any of our geologists can come on we should get some good info.--dennis

MikeH · Feb 24, 2011

jaymeister99 said:
Yup. California might fall into the ocean too.:barf:

Do we get to vote on it?:thumbup:

Thomas Linton · Feb 24, 2011

The most recent survey determined that the Pole is moving approximately north-northwest at 55 km per year.

Source: the site I linked in post above

PDE · Feb 24, 2011

MikeH said:
Do we get to vote on it?:thumbup:

Probably not, but it is up to Arnold.

Thomas Linton · Feb 24, 2011

PDE said:
Probably not, but it is up to Arnold.

As the only living actor who once was Governor of California?

^___^