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Earth, Planets and Space
Fig. 1. | Earth, Planets and Space

Fig. 1.

From: Giant ionospheric disturbances observed with the SuperDARN Hokkaido HF radar and GPS network after the 2011 Tohoku earthquake

Fig. 1.

Field of view of the SuperDARN Hokkaido radar with sixteen beams at Rikubetsu. Approximate ground ranges from Rikubetsu are shown. A thick dotted broken curve represents points of 1000 km from the epicenter. Induction magnetometer and ionosonde are located at Moshiri and Wakkanai, respectively. Great circle distances from the epicenter to Wakkanai, Moshiri and Rikubetsu are 762, 672 and 588 km, respectively.

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