Semeru volcano (East Java): continuing slow lava flow extrusion
Fri, 12 Sep 2014, 13:0613:06 PM | BY: T
The slow extrusion of a lava flow from the summit crater continues and forms a dark tongue extending a few 100 meters. Rockfalls detaching from it roll frequently down the Kembar ravine on the southern flank.
Steam plume and the lava flow (dark tongue) from Semeru this morning
On contrast, the previously typical intermittent strombolian ash explosions of the volcano, in continuous activity since 1976, have been almost absent during the past months.
Wed, 23 Jul 2014, 14:15
Activity, weak during the past months, seems to have picked up. A new lava flow has started to slowly descend the southeastern slope. ... read all
Fri, 18 Oct 2013, 13:02
A pilot observed a small ash eruption this morning. The volcano had recently been very calm, but this could be a sign it is getting more active again. ... read all
Wed, 25 Jul 2012, 07:58
Tue, 8 May 2012, 10:05
CVGHM reported that during 1-29 February multiple pyroclastic flows from Semeru traveled 500 and 2,500 m into the Besuk Kembar and Besuk Kobokan rivers (on the S flank), respectively. During 1 February-30 April dense gray-to-white plumes rose 100-500 m above Jongring Seloko crater and drifted W and N. Incandescence was visible up to 50 m above the crater during 1 February-31 March. Seismicity decreased from March to April. Observations indicated that the lava dome grew in April. On 2 May CVGHM lowered the Alert Level to 2 (on a scale of 1-4) and reminded the public not to approach the crater within a 4-km radius. read all
Thu, 29 Mar 2012, 10:05
Our expedition leader Doni just returned from a visit to Semeru and reports that on 27 March, he and our group observed frequent explosions every few minutes, with many powerful enough to eject glowing bombs to produce small glowing avalanches down on the southern flank of the volcano. ... read all