Lokon volcano (North Sulawesi, Indonesia) eruption update: phreatic explosions, shallow earthquakes
Tuesday Sep 18, 2012 14:59 PM | BY: T
The volcano has calmed down after its strong eruption on Saturday, but until yesterday afternoon at around 16:40 pm, small explosions, probably phreatic in nature, were still going on at Lokon's Tompaluan crater.
"We recorded about 35 phreatic eruptions in the crater of Mount Lokon," said the Head of the Volcano Observation Center for Volcanology and Geological Hazard Mitigation (PVMBG) in Bandung to the Republika newspaper.
According Hendrasto, phreatic eruptions began on the morning of 16 Sep and ejected water, steam and small amounts of ash to a height of 350-400 m above the crater.
Hendrasto added, after the eruption on Saturday (15/9) at 18:53 pm, seismicity recorded from the crater of Mount Lokon has continues to be dominated by a large number (hundreds) o shallow volcanic earthquakes. There is a "high potential of shallow volcanic explosions that produce ash and the presence of the quakes is evidence of energy (magma) supply", he said. Lokon remains at warming level 3 (out of 4) and the exclusion zone should be 2.5 km around the crater, PVMBG Bandung recommends.
Side note: the photo published by Republika and circulating is NOT from the current eruption of Lokon...
Links / Sources:
Saturday, Sep 15, 2012
Another eruption has occurred at Lokon volcano in North Sulawesi, Indonesia. According to news, the eruption began today at 18:53 pm. local time and produced an ash column rising 1500 m above the crater. ... [more]
Thursday, May 03, 2012
Lokon volcano produced ash plumes rising to 3.7 km (12,000 ft) altitude and drifting 75 km N, observed from ground and satellite. [more]
Tuesday, May 01, 2012
Lokon volcano erupted again at 11:55 a.m. local time on Tuesday 1 May. ... [more]
Wednesday, Feb 22, 2012
Lokon volcano had 2 probably smaller eruptions yesterday (21 Feb) at 11:52 local time. According to local news, the eruption was not seen because of cloud cover on the mountain, but strong explosion sounds were heard in Tomohon, the town located at the foot of the volcano. The eruption was accompanied by hundreds of shallow volcanic earthquakes registered by the local observatory. ... [more]
Sunday, Feb 12, 2012
Mount Lokon volcano in North Sulawesi, Indonesia, erupted again yesterday (Friday 11 Feb) at around 20h20 local time. According to local news, the eruption produced a loud thumping noise and a 2 km tall ash eruption column, suggesting that this was a vulcanian-type, vent-clearing explosion. ... [more]