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Kongsberg Seatex

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Different Scales of Ionospheric Effects<br />

• Large-scale:<br />

• Basically the density of charged particles in<br />

the ionosphere<br />

• Medium-scale:<br />

• F-layer patches moving over the auroral<br />

oval<br />

• Small-scale:<br />

• Scintillations within the auroral oval causing<br />

variations over a few km<br />

The auroral oval (www.mssl.ucl.ac.uk)<br />

/ 21 / 20-Nov-12

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