Seismicity associated with eruptive activity at Langila volcano, Papua New Guinea

摘要: Abstract During periods of eruptive activity at Langila Volcano, various combinations low-frequency earthquakes and high-frequency air waves have been recorded, ranging from alone to alone. It is shown that these different types events are part a continuous range which all interpreted be explosions or near the summit. Continuous tremor also often recorded for durations several minutes hours classified into two types: “harmonic” “non-harmonic”. Spectral analysis shows “non-harmonic” resembles string events. In contrast, spectra show simple modal characteristics indicate some type resonating source. This source thought include gas-filled cavity above magma body within volcano.