Kikai volcano (Japan) - Smithsonian / USGS Weekly Volcanic Activity Report for 22 September-28 September 2004 (Continuing Activity)

According to JMA's report on 6 June, discolored plumes, associated with volcanic tremor, had intermittently issued from Kikai's summit since 11 May. In addition, the number of small volcanic earthquakes had increased since 29 May. Discolored plumes were observed from Mishima village on the Ryukyu Islands and ash fell on residential areas during 3-5 June. ... Read all

The Air Force Weather Agency reported that plumes were visible on satellite imagery emanating from Kikai during 24-28 May. The thin plumes drifted to the S on the 24th, SE on the 25th and 26th, S on the 27th, and E on the 28th. The plumes were estimated to be lower than 3 km a.s.l. ... Read all

Continuous volcanic tremor was recorded at Satsuma-Iwo-jima during 20 to at least 23 July. A seismometer about 700 m SW of Iwo-dake crater recorded 50-100 earthquakes daily, in comparison to 30-90 earthquakes recorded daily during December 2000 and March 2001. Small amounts of volcanic tremor were also occasionally recorded. ... Read all