Report on Inielika (Indonesia) — 17 January-23 January 2001
Smithsonian / US Geological Survey Weekly Volcanic Activity Report, 17 January-23 January 2001
Managing Editor: Gari Mayberry
Please cite this report as:
Global Volcanism Program, 2001. Report on Inielika (Indonesia). In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 17 January-23 January 2001. Smithsonian Institution and US Geological Survey.
8.73°S, 120.98°E; summit elev. 1559 m
All times are local (unless otherwise noted)
The VSI reported that during 16-22 January ongoing explosions sent ash 100-1,000 m above the crater rim. Ash was deposited within a 10-20 m radius around the crater; lapilli with a maximum diameter of 50 cm were deposited out to ~500 m around the crater. Observations on 21 January revealed that two new large craters formed, to the SE and the NW. The SE crater was 50 m in diameter and 10 m deep. The NW crater was 20 m in diameter, open to the NW, and 1.1 m deep. The volcano remained at Alert Level 3 (on a scale of 1-4).
Geologic Background. Inielika is a broad, low volcano in central Flores Island that was constructed within the Lobobutu caldera. The complex summit of the 1559-m-high volcano contains ten craters, some of which are lake filled, in a 5-sq-km area north of the city of Bajawa. The largest of these, Wolo Runu and Wolo Lega North, are 750 m wide. The first historical eruption of Inielika, a phreatic explosion that formed a new crater, did not occur until 1905 and was the volcano's only eruption during the 20th century. Another eruption took place about a century later, in 2001. A chain of Pleistocene cinder cones, the Bajawa cinder cone complex, extends southward to Inierie.