Report on Cereme (Indonesia) — 15 October-21 October 2003
Smithsonian / US Geological Survey Weekly Volcanic Activity Report, 15 October-21 October 2003
Managing Editor: Gari Mayberry
Please cite this report as:
Global Volcanism Program, 2003. Report on Cereme (Indonesia). In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 15 October-21 October 2003. Smithsonian Institution and US Geological Survey.
6.892°S, 108.4°E; summit elev. 3078 m
All times are local (unless otherwise noted)
According to news reports, local authorities issued an alert and closed Cereme to the public after detecting unrest. Several earthquakes were recorded on 17 October. Seismicity increased on 18 October, when 18 earthquakes up to M 2 occurred. Seismicity was felt in seven subdistricts of the Cilimus and Pesawahan districts.
Geologic Background. The symmetrical stratovolcano Cereme, also known as Ciremai, is located closer to the northern coast than other central Java volcanoes. A steep-sided double crater elongated in an E-W direction caps 3078-m-high Gunung Cereme, which was constructed on the northern rim of the 4.5 x 5 km Geger Halang caldera. A large landslide deposit to the north may be associated with the origin of the caldera, although collapse may rather be due to a voluminous explosive eruption (Newhall and Dzurisin, 1988). Eruptions, relatively infrequent in historical time, have included explosive activity and lahars, primarily from the summit crater.