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Indonesia: Rinjani activity continues 4 May 2009

Posted by admin in activity reports, Indonesia, Rinjani.
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The eruptive activity at Rinjani volcano on Lombok Island is continuing, according to press reports from Indonesia. Those reports are a little contradictory, with the Jakarta Globe saying that the volcano ‘continued to emit volcanic ash and smoke on Sunday [but] the eruptions were relatively smaller than those on Saturday, authorities said’, while Tempointeraktif has ‘Mount Rinjani closed as eruptions intensify’ and ‘activities escalating since Saturday (2/5) afternoon’. The latter report quotes head Indonesian volcanologist Surono as saying that ‘volcanic ash and smoke’ from Rinjani has reached about 8000 metres, and also has this interesting information:

Mining and Energy office of West Nusa Tenggara Province reported a crater began to form at the eastern slope of the mountain. Heryadi Rahmad from the mining and energy office said the eruptions had not caused terrible impacts ‘but a small crater began to form’ in the eastern part of the mountainous area at Mount Baru Jari.

Barujari (that being the GVP form of the name) is a volcanic cone at the eastern end of the Rinjani caldera which has been the focus of historical eruptive activity – see the satellite image at the Eruptions blog for Rinjani’s interesting summit arrangements. Eruptions from excentric vents (vents cutting into the rim of a pre-existing crater) seem to be typical of Barujari’s eruptive history, and this new ‘small crater’ may be the latest example.

The alert status for Rinjani has not been raised and remains (as of the time of writing) at Orange (Siaga), the second-highest level.

UPDATE 5 May 2009. A new report in the Jakarta Post has Rinjani (Baru Jari) ‘spray[ing] thick ash’ on Sunday, but quotes Heryadi Rahmad of the provincial mining and energy authority as saying that ‘The peak of the activity was on Saturday with four tremors and the eruption of thick ash’. A team from the Volcanology and Geological Hazard Mitigation agency is at Rinjani to monitor the activity, and the national park around the volcano remains closed to visitors.

For all our Indonesia coverage: Indonesia « The Volcanism Blog.

News
No danger in Barujari eruption, officials sayJakarta Globe, 3 May 2009
Mount Rinjani closed as eruptions intensify – Tempointerkatif.com, 3 May 2009
Mt Baru Jari spews ashJakarta Post, 4 May 2009

Information
Global Volcanism Program: Rinjani – summary information for Rinjani (0604-03=)
Pusat Vulkanologi & Mitigasi Bencana Geologi – News and information portal for the Directorate of Volcanology and Geological Hazard Mitigation, Indonesia

The Volcanism Blog

Comments

1. seemlouder - 10 May 2009

i live in mataram lombok, from my house, in the clear morning i can see the smoke sphewed by baru jari. i’ve climbed rinjani before n seeing barujari directly, but just knowing now that the “scar” in it’s flank is actually a eruption hole, wow. but for now, the label for this situation is still in low alert, i hope it never get any higher.

greetings from lombok


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