Skip to main content
Earth, Planets and Space
Fig. 5. | Earth, Planets and Space

Fig. 5.

From: An aeromagnetic survey of Shinmoe-dake volcano, Kirishima, Japan, after the 2011 eruption using an unmanned autonomous helicopter

Fig. 5.

Left: the difference in the total magnetic field between the second and the first aeromagnetic surveys. Positive and negative magnetic anomalies are seen to the south and north of the volcano, respectively. The amplitude of the anomaly is approximately 100 nT. Right: Computed magnetic anomalies, assuming that all 1.5 × 107 m3 of the lava in the summit crater of Shinmoe-dake acquired a magnetization of 1.5 A/m by cooling. Note that the computed total magnetic field accurately explains the observed change.

Back to article page