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Written by Administrator
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A magnetometer is a scientific instrument used to measure the strength of magnetic fields. Earth's magnetism varies from place to place and differences in the Earth's magnetic field (the magnetosphere) can be caused by a couple of things:
- The differing nature of rocks
- The interaction between charged particles from the sun and the magnetosphere
Magnetometers are used in geophysical surveys to find deposits of iron because they can measure the magnetic pull of iron. Magnetometers are also used to detect archeological sites, shipwrecks and other buried or submerged objects.
A magnetometer can also be used by satellites like GOES to measure both the magnitude and direction of the earth's magnetic field.
Magnetometers are very sensitive, and can give an indication of possible auroral activity before one can even see the light from the aurora.
From : http://spider.irf.se/mag/
X: Black | Y: Red | Z: Green
The plot shows the deviation from the expected means of the three components of the geomagnetic field. Click on the plot for a 10 second update version. The 45 day predictions from Boulder. 3-day forecast from NOAA. A small description and more on the real time data.
Other magnetometer data
Total field measurements
Lycksele magnetometer
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