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Earth, Planets and Space
Fig. 2. | Earth, Planets and Space

Fig. 2.

From: Barometric and magnetic observations of vertical acoustic resonance and resultant generation of field-aligned current associated with earthquakes

Fig. 2.

Barometric data obtained at Mizusawa observatory, which is close to the epicenter of the 2008 Iwate-Miyagi Nairiku earthquake. Immediately after the origin time, a spike is seen, which may be an effect of seismic displacement. The amplitude of the barometric oscillation for 00:30–02:30 UT is larger than that before the origin time, and a resonance peak appears in the PSD during the interval.

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