Rinjani volcano (Lombok): news & activity updates
Rinjani volcano (Lombok Island, Indonesia): volcano calm after yesterday's explosion
Tuesday Aug 02, 2016 17:33 PM | BY: T
Rinjani's vulcanian eruption yesterday (image: Rindi Rmaniar / Instagram)The volcano has remained calm since yesterday's sudden and very violent explosion.
The attached picture by Rindi Rmaniar on Instagram taken from a few kilometers distance only shows the power of the vulcanian-type explosion: it generated an eruption column several kilometers high, sent ballistic projectiles and pyroclastic flows by collapsing parts of the ash column covering all the slopes of the Baru Jari cone which grew significantly last year.
The exact nature of the eruption remains unclear: it could be a phreatic event driven by trapped, overheated groundwater inside the cone's solidly plugged conduit that suddenly flashed into steam; or it could be the result of accumulated over-pressure caused by gasses that slowly formed bubbles (and pressurized the rock) inside the cooling lava erupted last year, or even a new batch of fresh magma that rose towards the surface and likely interacted violently with water (phreatomagmatic explosion).
Only an analysis of the ash could solve this question, along with the activity in the near to medium future if any. For the time being, it looks as if it might well be a sudden isolated event.
Rinjani volcano (Lombok Island, Indonesia): explosive eruption, ash plume triggers closure of Lombok airport
Monday, Aug 01, 2016
The volcano had a sudden explosive eruption this noon, it seems. An ash plume was detected at 12:20 local time (04:20 UTC) that rose from the volcano to originally estimated 32,000 ft (10 km) altitude and drifted south. ... [more]
Wednesday, Dec 16, 2015
It seems that the eruption at the Barujari cone is over. ... [more]
Saturday, Dec 05, 2015
The volcano continues to erupt, but activity has decreased a lot. When visited during 30 Nov - 2 Dec, "the volcano erupted just 2-3 times eruption per day", but some explosions were fairly big (s. image attached). [more]
Tuesday, Nov 17, 2015
The eruption continues with no significant change. When observed yesterday on location, the Barujari cone was in violent strombolian activity and the lava flow was still weakly alimented, creating a small steam plume at the lake entry of the flow. ... [more]
Sunday, Nov 15, 2015
The eruption continues. Ash emissions have decreased recently, with column heights ranging between a few hundred to 2000 meters. On the other hand, mild to moderate strombolian activity from the Barujari cone and the effusion of a new lava flow have been stable and seem to be going on strongly. ... [more]