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06-03-2011, 14:06
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#1
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Registered User
Join Date: Feb 2011
Location: Channel Islands, CA
Boat: Spencer 53 Ketch
Posts: 42
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Magnetic North Shift
Anyone concerned about the headlines detailing a rapid shift of magnetic north towards Russia at an extremely accelerated pace?
How does this affect us as navigators. Deviation recommendations will have to be adjusted?
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06-03-2011, 14:23
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#2
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Senior Cruiser
Join Date: Jan 2010
Location: PORTUGAL
Posts: 30,581
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Re: Magnetic North Shift
Its the pre-Shift Wobble.....
__________________
It was a dark and stormy night and the captain of the ship said.. "Hey Jim, spin us a yarn." and the yarn began like this.. "It was a dark and stormy night.."
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06-03-2011, 14:30
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#3
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Registered User
Join Date: Sep 2009
Location: New Bern NC
Boat: Searunner 34 Trimaran
Posts: 1,660
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Re: Magnetic North Shift
With massive human over population, climate change in all of its forms, the loss of a huge percentage of the Earth's available ground water, dying out of most of the coral reefs, rising seas and disappearing shorelines, displaced populations... NOW THIS!
It rings true, I suppose that frequent deviation corrections are in order?
I for one, plan to tread as lightly as I can, but see as much as possible of the still beautiful planet that we live on...
Mark
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06-03-2011, 14:33
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#4
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Registered User
Join Date: May 2009
Location: Vancouver, Wash.
Boat: no longer on my Cabo Rico 38 Sanderling
Posts: 1,810
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Re: Magnetic North Shift
If you use out-dated charts or plan on still cruising 100 years from now it will be a major problem.
I'd suggest worrying about things you have control over.
After you've studied and taken classes and read all there is about cruising, be prepared for it to be different out there.
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06-03-2011, 14:47
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#5
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Registered User
Join Date: Apr 2008
Location: U.S., Northeast
Boat: Currently boatless
Posts: 1,643
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Re: Magnetic North Shift
Quote:
Originally Posted by TheWatchman
Anyone concerned about the headlines detailing a rapid shift of magnetic north towards Russia at an extremely accelerated pace?
How does this affect us as navigators. Deviation recommendations will have to be adjusted?
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Not to be pedantic, but strictly speaking, a shift of the magnetic poles will affect the magnetic variation (the angle between the true north and the direction of the magnetic field at a particular geographical location). The magnetic deviation is determined by the magnetic field of the vessel on which the compass is located.
__________________
... He knows the chart is not the sea.
-- Philip Booth, Chart 1203
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06-03-2011, 14:52
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#6
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Registered User
Join Date: Jan 2008
Boat: Teak Yawl, 37'
Posts: 2,980
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Re: Magnetic North Shift
I have heard this was happening and I directly attribute it to a high density of automobiles in the USA and China all turning clockwise on a closed path. The rotationally accelerating steel causing a small magnetic moment in all of the automobiles has perturbed the earths magnetic field causing it to precess.
The corresponding deviation in the Van Allen belt has caused dramatic shifts in the earths climate as evidenced every bit of biology and ecology studied in the last 10 years. Because of the climatic changes there are more forest fires and rotting vegetation all releasing CO2 into the atmosphere. The increase in CO2 accelerates the climatic change causing uncontrolled open-loop oscillations in the weather. We need to start making more left hand turns to reverse the damage.
In all seriousness, geophysicists have observed indications that the earths magnetic field may flip. The reversal of the magnet field is common with the last one occuring some 780,000 years ago.
We will be indeed be glad for the GPS and may want to change the response rates of the GPS units to further enable short time scale course adjustments so as not to need the compass to steer. Else we may need a ships gyrocompass.
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06-03-2011, 16:20
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#7
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Registered User
Join Date: Aug 2003
Boat: Dragonfly 1000 trimaran
Posts: 7,145
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Re: Magnetic North Shift
Quote:
Originally Posted by Mark Johnson
With massive human over population, climate change in all of its forms, the loss of a huge percentage of the Earth's available ground water, dying out of most of the coral reefs, rising seas and disappearing shorelines, displaced populations... NOW THIS!
It rings true, I suppose that frequent deviation corrections are in order?
I for one, plan to tread as lightly as I can, but see as much as possible of the still beautiful planet that we live on...
Mark
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If you really want to help mommy earth, hold your breath as long as you can.
You're breathing out CO2, that horrible "greenhouse gas"
Back in the '70's, people wanted everyone to build underground houses or at least geodesic domes.
It seems they thought square houses presented too much resistance to the winds which would slow down the rotation of the earth...
__________________
The question is not, "Who will let me?"
The question is,"Who is going to stop me?"
Ayn Rand
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06-03-2011, 16:38
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#8
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Registered User
Join Date: Aug 2009
Location: Michigan
Posts: 225
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Re: Magnetic North Shift
Oh my God my head hurts. Time to go anchor somewhere there's palm trees and crack a beer before my compass gets to far off.
Oh OK - Maybe that should be tied to a dock?
Na, wrong thread - sorry
__________________
PATRIOTISM is supporting your country all the time AND your Government when it deserves it.
Mark Twain
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06-03-2011, 17:01
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#9
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Registered User
Join Date: Dec 2006
Location: Cruising
Boat: Privilege 39 Catamaran, Exit Only
Posts: 2,723
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Re: Magnetic North Shift
I hardly ever used my compass during our circumnavigation. The course was always fairly obvious from the position of the sun. In all my sailing years, I have used a handheld compass only a couple of times to enter a pass.
During a trade wind circumnavigation, you sail with the winds, and eventually you get to the other side without paying much attention to the compass in these days of GPS.
On the other hand, I would really like to have a compass that would tell me the location of all the pirates so that I could be somewhere else.
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06-03-2011, 19:27
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#10
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Registered User
Join Date: May 2008
Location: Nova Scotia until Spring 2021
Boat: Custom 41' Steel Pilothouse Cutter
Posts: 4,976
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Re: Magnetic North Shift
Guys, guys, I made fun of this last month:
http://www.cruisersforum.com/forums/...ble-54595.html
Has it been three weeks already?
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06-03-2011, 20:25
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#11
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Registered User
Join Date: Oct 2005
Posts: 6,185
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Re: Magnetic North Shift
Poles have been moving forever.
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06-03-2011, 20:36
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#12
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Registered User
Join Date: Aug 2010
Location: Central California
Boat: M/V Carquinez Coot
Posts: 3,782
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Re: Magnetic North Shift
Quote:
Originally Posted by senormechanico
If you really want to help mommy earth, hold your breath as long as you can.
You're breathing out CO2, that horrible "greenhouse gas"
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I'm working on my flatulence first, then belching, and finally on exhaling.
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06-03-2011, 20:40
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#13
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Registered User
Join Date: Dec 2008
Location: ontario canada
Boat: grampian 26
Posts: 1,743
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Re: Magnetic North Shift
Quote:
Originally Posted by senormechanico
If you really want to help mommy earth, hold your breath as long as you can.
You're breathing out CO2, that horrible "greenhouse gas"
Back in the '70's, people wanted everyone to build underground houses or at least geodesic domes.
It seems they thought square houses presented too much resistance to the winds which would slow down the rotation of the earth...
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I turned my old nuclear bomb shelter into an underground house. Now i've got all the bases covered. Right down to the tin foil hat.
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06-03-2011, 21:13
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#14
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Registered User
Join Date: May 2009
Location: Vancouver, Wash.
Boat: no longer on my Cabo Rico 38 Sanderling
Posts: 1,810
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Re: Magnetic North Shift
Quote:
Originally Posted by rebel heart
Poles have been moving forever.
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Maybe you engineer types could give us a better explanation. Doesn't it have something to do with the North Star and a star in the Southren Cross shifting positions in the Universe? Causing the axis of the earth to shift and the earth to wobbls a bit.
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06-03-2011, 21:17
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#15
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Registered User
Join Date: Sep 2009
Location: SE Asia
Boat: Swan 56
Posts: 891
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Re: Magnetic North Shift
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