What is the Strength of Earth's Magnetic Field and How Can It Be Measured?

In summary, the Earth's magnetic field has been decreasing for thousands of years and there is data available from the National Geophysical Data Center. However, it is unclear if there is data specifically showing the global magnetic field's changes in the last 10 years. The speaker is asking for tips on where to find this data or if it is available to the public.
  • #1
thick0122
3
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I was wondering what the magnitude is of the Earth's magnetic field? Or perhaps websites that may help to determine this magnitude for specific places on earth. thankyou
 
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  • #2
A Google search for "earth's magnetic field" gave me this on the first page:

http://www.ngdc.noaa.gov/seg/geomag/magfield.shtml [Broken] from the National Geophysical Data Center.
 
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  • #3
The global magnetic strengths of the Earth have been decreasing for several thousands years.
Especially during the last 10 years all kind of measurements have taking place from satellites.
But so fare I haven’t find any available data showing exactly what have happen to the GLOBAL magnetic field the last 10 years. I mean is the global magnetic field still decreasing, - if yes, - how much month by month / year by year .Does someone have tips where such available data can be found? – Or are such data at all available for everyone ? thankyou
 
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What is the magnetic field of the Earth?

The magnetic field of the Earth is the magnetic force that surrounds and protects our planet. It is generated by the liquid iron core of the Earth and extends into space, creating a protective barrier against harmful solar winds.

How is the magnetic field of the Earth measured?

The magnetic field of the Earth is measured using a device called a magnetometer. This instrument measures the strength and direction of the magnetic field at different locations on the Earth's surface.

Why does the magnetic field of the Earth change over time?

The magnetic field of the Earth is constantly changing due to the movement of the liquid iron in the Earth's core. This movement causes fluctuations in the strength and direction of the magnetic field, which can be observed over time.

What is the significance of the magnetic field of the Earth?

The magnetic field of the Earth plays a crucial role in protecting our planet from harmful solar radiation. It also helps with navigation and animal migration, and is used for various technological applications such as compasses and magnetic data storage.

Can the magnetic field of the Earth reverse its polarity?

Yes, the magnetic field of the Earth has reversed its polarity several times in the past. This means that the north and south magnetic poles have switched places. Scientists believe that this reversal occurs every few hundred thousand years, but the exact cause and timing are still not fully understood.

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