The record of seismic wave measured by broadband seismograph
This record is measured by broadband seismograph at Asama station
when it happend eruption at 20:02 time on September 1.
Record of broadband seismograph of the eruption at Asama volcano
(1 minute from 20:02 on 2004/09/01)
The following is the monitor record of the broadband seismograph at Asama during
1 day. Data is filtered with band-pass filter by 20 to 200 seconds
(Red arrow denotes the time of eruption.).
The following waveform is the original broadband record including an eruption for
about 30 minutes.
The following record is obtained when the above data is filterd with band-pass
filter for 10 to 100 seconds
(Note that the seismic waveform at about 20:10 is the earthquake of Amami Oshima.).
Earthquake Information Center of Earthquake Research Institute, University of Tokyo
