The MODVOLC detected thermal anomalies at Ibu on 17th September. Suggesting eruptive activity at the summit, possibly related to lava dome growth in the wide summit crater that has been documented since 2000.
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It is reported that white and gray plumes from Ibu rose to 300-400 m altitude. There are more frequent earthquakes, that indicate an increasing activity. There were also lava flows and explosions at the summit. There was also Strombolian activity. The Alert Level was increased to 3. The lava dome is growing and is now visible from Duono village.
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Ibu volcano
Stratovolcano 1325 m / 4,347 ft Halmahera, Indonesia, 1.48°N / 127.64°E Current status: minor activity or eruption warning (3 out of 5) Ibu webcams / live data
Only a few eruptions have been recorded from Ibu in historical time, the first was a small explosive eruption from the summit crater in 1911. An eruption producing a lava dome that eventually covered much of the floor of the inner summit crater began in December 1998.
Background:
Ibu volcano, located along the NW coast of Halmahera Island, is a stratovolcano with a truncated summit and a number of large nested summit craters. The inner crater, 1 km wide and 400 m deep, contained several small crater lakes through much of historical time. The outer crater, 1.2 km wide, is breached on the north side, creating a steep-walled valley. A large parasitic cone is located ENE of the summit. A smaller one to the WSW has fed a lava flow down the western flank. A group of maars is located below the northern and western flanks of the volcano.
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