Volcano Live

West Java, Indonesia

7.13 S, 107.83 E
summit elevation 2249 m
complex volcano

Guntur is an andescitic volcano located in west Java, Indonesia, 35 km SE of Bandung.

Guntur was one of the most active volcanoes in Java during the 1800's, but has not erupted since then. The crater is covered by forest and some fumaroles remain. Steam emitted from the area is utilized for electric power generation.

The eruptions of Guntur are generally accompanied by lava fountains, volcanic bombs, lapilli and other ejected materials, followed by lava flows.

Fumarolic Activity
Minor fumarolic activity is located in the Kamojang caldera, west of the summit of Guntur.

2013 Unrest
Guntur volcano was raised to level 2 alert (waspada) on 2nd April 2013 due to an increase in seismic activity and significant deformation. A 2 km exclusion zone was placed around the crater.

2005 Earthquake
On 2nd February 2005 a magnitude 3.1 felt earthquake at a depth of 2 km occurred at Guntur volcano.

2002-03 Earthquakes
Beginning December 2002 and continuing until mid May 2003, deep and shallow volcanic earthquakes were registered at the volcano. On 28th December a white ash plume around Guntur crater and Kabuyutan crater reached 3 m high.

1999 Earthquake Swarm
Between 6-8 May 1999 there were 95 earthquakes measured at Guntur volcano. The largest was magnitude 2.9 on 6th May and was felt with an intensity of III at Guntur Observatory, 7 km from the hypocenter.

1997 Seismicity
In May 1997 seismicity increased suddenly beneath the summit of Guntur volcano. Volcanic earthquakes occurred at the summit and Gandapura caldera between from October 1997 to April 1999.

Further reading
Nugraha, Andri Dian, et al. "Seismic velocity structures beneath the Guntur Volcano complex, West Java, derived from simultaneous tomographic inversion and hypocenter relocation." Journal of Mathematical and Fundamental Sciences 45.1 (2013): 17-28.

Sadikin, Nurlia, et al. "Seismic activity of volcano-tectonic earthquakes at Guntur volcano, West Java, Indonesia during the period from 1991 to 2005." Indonesian Journal of Physics 18.1 (2007): 21-28.