Fresh Volcanic Bomb at Suwanosejima volcano, Japan
by Haruhisa Nakamichi, Nagoya University, Nagoya, Japan
We find out fresh volcanic bombs around the summit of Suwanosejima volcano. The bombs was fallen 3 hours before we climbed up to the summit.
Suwanosejima volcano in the southwestern part of Japan is an andesitic volcano currently characterized by explosive eruptions at intervals of 2-4 weeks since 1957. Recently, small ash eruptions called strombolian or vulcanian eruptions have occurred over periods of a few days to months at the central crater. Explosive eruptions were followed by continuous lava effusion and degassing. Explosive earthquakes were followed by continuous tremors with the period from several minutes to hours. Continuous tremors became suddenly weak and were unclear and associated with weak tilt detected inflation of the volcano edifice a few minutes before explosive eruptions.
- Earth Magnetism & Rock Physics (345)
- Field (2781)
- Geochemistry, Mineralogy, Petrology & Volcanology (868)
Haruhisa Nakamichi (distributed via imaggeo.egu.eu)