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Part 4: |
Observation of volcanic and seismic activities
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With what kinds of machines
or methods can we observe
and study the volcanic
and seismic activities?
Let us explain what
played an important role during
the 1990 - 1995
eruption of Unzen Volcano.
Contents |
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Page 1: | Seismograph |
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Page 2: | Conversion of seismic-acoustic oscillation |
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Page 3: | Network system of seismic observation in Kyushu Island |
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Page 4: | Seismic activities in Kyushu Island |
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Page 5: | Designing and manufacturing of penetrator-type seismographs |
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Page 6: | Tilt observation |
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Page 7: | GPS observation |
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Page 8: | Thermal imagery |
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