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Figure 1 | Earth, Planets and Space

Figure 1

From: Seismic activity near the Moriyoshi-zan volcano in Akita Prefecture, northeastern Japan: implications for geofluid migration and a midcrustal geofluid reservoir

Figure 1

Map of the northern Tohoku region showing seismic activity. (a) Comparison of seismicity before and after the 2011 off the Pacific coast of Tohoku (Tohoku-oki) earthquake. Blue and red circles represent earthquakes during the 10-year period before and 2 years after the Tohoku-oki earthquake, respectively. Black and the orange triangles indicate active volcanoes and the Moriyoshi-zan volcano, respectively. (b) Enlarged map around the Moriyoshi-zan volcano showing epicenter distribution (circles and crosses) and the location of permanent seismographic stations (blue inverted triangles). Red circles and purple crosses represent earthquakes after the Tohoku-oki earthquake and low-frequency earthquakes, respectively. The box shows the area of Figure 2.

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