What about at its weakest? If so, when?
2007-10-06 13:57:20 · 4 answers · asked by Doc Biz 4 in Science & Mathematics ➔ Physics
No.
Earth's magnetic field results from activity well inside the Earth. it is not affected by climate or temperature.
However, its extent and the overall flux that one would measure (especially as one climbs to various orbits) is affected by the solar field, charged particles from the Sun, strong electromagnetic storms (e.g., solar flares, etc.).
Everything else being equal, one could be tempted to say that the effect of the Sun could be a bit stronger in Janurary than in July (we are closer to the Sun in January).
However, things are rarely equal. The effect of one single solar flare can outweigh any distance factor.
On March 13, 1989, the Earth's field was pushed back by the strength of a solar "magnetic storm" and the Telluric currents induced by the storm induced cyclical disturbances in very long transport lines in Northern Québec, leading to a province-wide power failure.
The induced voltage was a bit over 100,000 Volts!
Seasonal changes, if any, would be counted in very small fractions of that.
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I've checked the various pages of the web site below and have not found any indication of seasonal effects.
2007-10-06 14:04:56 · answer #1 · answered by Raymond 7 · 0⤊ 0⤋
Not sure, BUT I think I remember hearing on Discover channel that our Magnetic field is affected by the suns solar flares.
2007-10-06 14:00:22 · answer #2 · answered by dingydarla 3 · 0⤊ 2⤋
yes the 23rd June in Denmark.
we call it Saint Hans night, then you can see the Alf dancing and you have to gathering herbs and you will see the man,woman you will marry when you put the barbs under your pillow
romantic?
2007-10-06 14:01:19 · answer #3 · answered by jette n 3 · 0⤊ 0⤋
I'm not sure, but I think the moon has something to do with it, it all depends on how close it is to earth.
2007-10-06 14:00:52 · answer #4 · answered by Anonymous · 0⤊ 2⤋