Kirishima volcano news & activity updates
Kirishima volcano (Kyushu, Japan), activity update: vulcanian explosions, activity decreasing
Friday Feb 04, 2011 07:01 AM |
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.
Ash from the various explosions (summarized in JMA's reports (Japanese Meteorological Agency, in Japanese) reaches 500-3000 m altitude and affects the SE of Kyushu island, where it causes much nuisance to life and infrastructure on ground as well disruption to air traffic.
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]
Tuesday, Feb 01, 2011
The lava dome inside Kirishima's crater is growing at a fast rate. Judging from areal photos, it now more than 500 m wide and well under way of soon over-spilling the Shinmoe-dake crater. If this happens, pyroclastic flows will likely be generated and could threaten nearby areas; although explosive activity has calmed down a lot, large explosions could occur any time. For this reason Japanese authorities have extended the exclusion zone from 2 to 3 km, and evacuated more than 600 residents of the town of Takaharu located on the eastern slope of Kirishima volcano. ... [more]
Kirishima volcano (Kyushu, Japan), activity update: explosive activity decreases - eruption enters magmatic phase
Sunday, Jan 30, 2011
The eruption at Kirishima seems to enter a more magmatic phase; while the ash plume further decreased and ash production declined, a new lava dome has appeared in the summit crater. Visible glow from the crater is now strong. [more]
Saturday, Jan 29, 2011
The eruption at Kirishima still goes on, but the plume height today is only half in height (reaching 3-4 km, according to VAAC Tokyo). Judging from photos of the webcamera and various reports, the intensity of the ash emission seems to have gone down compared to the past days. [more]