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Kirishima volcano
Shield volcano 1700 m / 5,577 f
Kyushu, Japan, 31.93°N / 130.86°E
Current status: restless (2 out of 5)
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Kirishima volcano eruptions:
2018, 2017, 2011, 2008, 1992, 1979, 1971, 1959, 1946(?), 1923, 1914, 1913-14, 1903, 1899-1900, 1898, 1898, 1897, 1896, 1895-96, 1894, 1891, 1889, 1888, 1887, 1880, 1832, 1822, 1771-72, 1769, 1768, 1719, 1717, 1716-17, 1716, 1706, 1690, 1678, 1677, 1667(?), 1662-64, 1659-61, 1637-38, 1628, 1620, 1615-18, 1613-14, 1598-1600, 1596?, 1595, 1588, 1587, 1585, 1576-78, 1574, 1566, 1566, 1554, 1524, 1381, 1235, 1184, 1175(?), 1167, 1113, 1112, 945, 858, 857, 843-48, 837-39, 788, 742
Typical eruption style:
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Kirishima volcano news & activity updates

Kirishima volcano (Kyushu, Japan) activity update: degassing, slightly increased seismic activity

Saturday Dec 15, 2012 11:05 AM | BY: T

No eruptions were observed at Shinmoedake since 7 September 2011 (last explosion on 1 March). Overall, the volcano's activity (seismicity, deformation, degassing) has been decreasing, JMA's November volcano activity summary reports:
"Since September 2012, the volcanic seismicity has remained at slightly higher levels than that observed between June and August 2012, and a total of 40 earthquakes occurred in November. 4 hypocenters were determined to be located at the northeast of Shinmoedake, and most of other hypocenters were supposed to be just beneath the crater of Shinmoedake. No volcanic tremors were observed (as in October).
According to regional deformation observations conducted by GSI, baseline extension caused by magma supply to a deeper chamber to the northwest of the crater gradually has slowed down to a static state since December 2011.
However, baselines between Ebino and Makizono, as well as Makizono and Miyakonojo2 had shown a tendency to shorten slightly since May 2012, but have been in a static state since September.
An aerial observation was conducted in cooperation with JMSDF on November 8th (Photo 1). They revealed that there was no remarkable change in the shape of accumulated lava and status of fumaroles inside the crater compared with those in a previous survey on September 14th. Plural fumaroles were observed on the north-east and south side of accumulated lava in the crater. A tiny amount of white plume rose no higher than the crater rim
mainly from east and north margin of the lava. And plural puddles were observed on the lava as in a previous survey. Infrared observations revealed no significant change in both the state of fumaroles and the temperature distribution including comparatively high-temperature area especially at the southern margin of the lava. In the crack of western slope, although no plume was observed, there was a relatively high-temperature area as in a previous survey.
Previous news
Monday, Jul 30, 2012
As our colleague Marc Szlegat reported on Vulkane.Net, the alert level of the Japanese Kirishima volcano (Kirishimayama) was raised last month"orange". This is the third out of 4 warning levels and means that an eruption could occur any time. ... [more]
Sunday, Mar 13, 2011
Kirishima volcano near Kagoshima town on Kyushu Island exploded violently earlier today (13 March), sending an ash plume to 4 km elevation. This is the first significant activity since March 1. It can not be ruled out, but probably remains speculation that the violent 8.9 magnitude earthquake on 11 March played a role in the reawakening of Kirishima. [more]
Friday, Feb 04, 2011
Over the past days, Kirishima's overall intensity of the eruption seems decreasing. Kirishima continues to grow its lava dome and produce small to moderate vulcanian-type explosions at rates of 5-10 per day. Strong pressure waves were accompanying the explosions and could be felt in Kirishima town. People are alerted not to approach the volcano in a radius of 4 km because of the risk of falling bombs. ... [more]
Wednesday, Feb 02, 2011
Another powerful vulcanian explosion from the new lava dome occured today at 15:54 pm. Ash reached an elevation of 15,000 ft (ca. 5 km) and an aviation warning was issued by VAAC Tokyo. ... [more]
Tuesday, Feb 01, 2011
Kirishima volcano had a strong explosion from the lava dome on 31 January. Windows were shattered by the pressure wave up to 8 km away, and bombs landed up to 2 km distance. Authorities have extended the exclusion zone to 4 km from the crater as new explosions can occur any time. ... [more]

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