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Fig. 4 | Earth, Planets and Space

Fig. 4

From: Distribution of low-frequency earthquakes accompanying the very low frequency earthquakes along the Ryukyu Trench

Fig. 4

Spectral amplitudes of various sources. Time window for each calculation was set to 400 s. Red lines show the low-frequency earthquakes (LFEs) and very low frequency earthquakes (VLFEs) that occurred during 12:00–13:00 on June 1, 2005 (UT). Black line shows the ordinary earthquake (magnitude 2.4), which occurred at 10:44 on May 27, 2005 (UT). Gray lines show the ambient noise

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