5:15 PM - 6:30 PM
[SVC47-P23] Estimation of source location of volcanic earthquakes beneath Nishinoshima volcano applying the envelope correlation method to ocean bottom seismometer data
Keywords:Nishinoshima volcano, source location, envelope correlation
As a preliminary analysis, we picked up 45 earthquakes from 30-minute-long OBS data (2015/6/21 07:00:00-07:30:00), converted them into RMS envelope in 4-8 Hz, and estimated source locations applying the envelope correlation method (Obara, 2002). Most earthquake sources located almost right beneath the volcano with a wide distribution in a vertical section. A further analysis is expected to figure out more precise source locations of volcanic earthquakes and to reveal the eruption processes.