Global Volcanism Program

8 May-14 May 2013

CVGHM reported that in early March a slight increase of deep and shallow volcanic-tectonic earthquakes at Guntur was recorded; volcanic tremor became continuous on 2 April, prompting CVGHM to raise the Alert Level to 2 (on a scale of 1-4).

Temperature measurements of hot springs in five different areas fluctuated until mid-April and then were relatively stable through early May. Seismicity also decreased in early May. On 7 May the Alert Level was lowered to 1.

Sources: Center of Volcanology and Geological Hazard Mitigation (CVGHM)

Available Weekly Reports

2013: May |
2002: December |

8 May 2013 Back to Top

CVGHM reported that in early March a slight increase of deep and shallow volcanic-tectonic earthquakes at Guntur was recorded; volcanic tremor became continuous on 2 April, prompting CVGHM to raise the Alert Level to 2 (on a scale of 1-4).

Temperature measurements of hot springs in five different areas fluctuated until mid-April and then were relatively stable through early May. Seismicity also decreased in early May. On 7 May the Alert Level was lowered to 1.

Sources: Center of Volcanology and Geological Hazard Mitigation (CVGHM)

24 December 2002 Back to Top

During 9-15 December higher-than-normal seismicity at Guntur led VSI to raise the Alert Level to 2 (on a scale of 1-4). Visual observations of the summit did not reveal any surface changes or ash plumes. In comparison to the previous week, the number of shallow volcanic and tectonic earthquakes increased, while deep volcanic earthquakes decreased. Seismicity remained higher than normal during 16-22 December, but fewer earthquakes occurred than during the previous week. The Alert Level remained at 2.

Sources: Center of Volcanology and Geological Hazard Mitigation (CVGHM)

Summary of eruption dates and Volcanic Explosivity Indices (VEI).

Start Date	Stop Date	Eruption Certainty	VEI	Evidence
[ 1887 ]	[ Unknown ]	Uncertain
[ 1885 Jan 18 ]	[ Unknown ]	Uncertain
[ ~~1849~~ ]	[ ~~Unknown~~ ]	Discredited
1847 Oct 16	1847 Oct 28	Confirmed	2	Historical
1843 Nov 26	1843 Nov 26	Confirmed	2	Historical
1843 Jan 4	1843 Jan 4	Confirmed	3	Historical
1841 Nov 14	1841 Nov 14	Confirmed	2	Historical
1840 May 20	1840 May 24	Confirmed	2	Historical
1836 Oct 11	Unknown	Confirmed	2	Historical
1834 Dec	1835 Jan	Confirmed	2	Historical
1833 Sep 1	Unknown	Confirmed	2	Historical
1832 Aug 8	1832 Aug 13	Confirmed	2	Historical
1832 Jan 16	Unknown	Confirmed	2	Historical
1829	Unknown	Confirmed	2	Historical
1828 May 14	1828 Jul 8	Confirmed	2	Historical
1827 May 13	Unknown	Confirmed	2	Historical
1825 Jun 14	1825 Jun 15	Confirmed	2	Historical
1818 Oct 21	1818 Oct 24	Confirmed	2	Historical
1816 Sep 21	Unknown	Confirmed	2	Historical
1815 Aug 15	Unknown	Confirmed	2	Historical
1809 May 9	Unknown	Confirmed	2	Historical
1807 Sep 1	1807 Sep 6	Confirmed	2	Historical
1803 Apr 3	1803 Apr 15	Confirmed	2	Historical
1800	Unknown	Confirmed		Historical
1780	Unknown	Confirmed	2	Historical
1777	Unknown	Confirmed	2	Historical
1690	Unknown	Confirmed	3	Historical

Guntur is a complex of several overlapping stratovolcanoes about 10 km NW of the city of Garut in western Java. Young lava flows, the most recent of which was erupted in 1840, are visible on the flanks of the erosionally unmodified Gunung Guntur, which rises about 1550 m above the plain of Garut. Guntur is one of a group of younger cones constructed to the SW of an older eroded group of volcanoes at the NE end of the complex. Guntur, whose name means "thunder," is the only historically active center, with eruptions having been recorded since the late-17th century. Although Guntur produced frequent explosive eruptions in the 19th century, making it one of the most active volcanoes of western Java, it has not erupted since.