• Geology
  • Published 2017

Seismic analyses of Vulcanian eruption at Sakurajima volcano: Spectral ratio analyses of explosion and Volcano-tectonic earthquakes

@inproceedings{Hasib2017SeismicAO,
  title={Seismic analyses of Vulcanian eruption at Sakurajima volcano: Spectral ratio analyses of explosion and Volcano-tectonic earthquakes},
  author={Mohammad Hasibul Hasan Hasib and Takeshi B. Nishimura},
  year={2017}
}
Spectra ratios of direct and coda waves between large and small earthquake represent the differences of source time function, and have been used to evaluate the corner frequencies and magnitudes of tectonic earthquakes. We applied the spectral ratio method to explosion earthquakes observed at Sakurajima volcano, and found the spectral ratio changes with the lapse time. We inferred that the seismic waves of explosion earthquakes are generated mainly by initial rapid pressure release in the… CONTINUE READING