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Earth, Planets and Space
Fig. 8. | Earth, Planets and Space

Fig. 8.

From: Continuous long-term array analysis of seismic records observed during the 2011 Shinmoedake eruption activity of Kirishima volcano, southwest Japan

Fig. 8.

Temporal evolution during the study period of apparent slowness and back azimuth derived from the array analysis of vertical components. The gray scale maps the hourly histograms of slowness (0.05 s/km grid interval) and back azimuth (5° grid interval) measurements. Blue lines show the maximum amplitude of the vertical component in every 1 h window. Red and orange triangles show the times of explosive and non-explosive eruptions, respectively. The red and orange solid circles near the time axes show the times of volcanic tremor and low-frequency volcano earthquakes, respectively.

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