Report on Kelimutu (Indonesia) — April 1986
Scientific Event Alert Network Bulletin, vol. 11, no. 4 (April 1986)
Managing Editor: Lindsay McClelland.
Kelimutu (Indonesia) Gas emission from crater lake; felt earthquake
Please cite this report as:
Global Volcanism Program, 1986. Report on Kelimutu (Indonesia). In: McClelland, L (ed.), Scientific Event Alert Network Bulletin, 11:4. Smithsonian Institution. https://doi.org/10.5479/si.GVP.SEAN198604-264140.
8.77°S, 121.82°E; summit elev. 1639 m
All times are local (unless otherwise noted)
". . . signs of unrest from the Tiwu Nua Muri crater . . . consisted of increased gas bubbling from the crater lake beginning on 27 April and a felt earthquake on 28 April."
Geologic Background. Kelimutu is a small, but well-known, Indonesian volcano in central Flores Island with three summit crater lakes of varying colors. The western lake, Tiwi Ata Mbupu (Lake of Old People) is commonly blue. Tiwu Nua Muri Kooh Tai (Lake of Young Men and Maidens) and Tiwu Ata Polo (Bewitched, or Enchanted Lake), which share a common crater wall, are commonly green- and red-colored, respectively, although lake colors vary periodically. Active upwelling, probably fed by subaqueous fumaroles, occurs at the two eastern lakes. The scenic lakes are a popular tourist destination and have been the source of minor phreatic eruptions in historical time. The summit of the compound 1639-m-high Kelimutu volcano is elongated 2 km in a WNW-ESE direction; the older cones of Kelido and Kelibara are located respectively 3 km to the north and 2 km to the south.
Information Contacts: Olas, Suratman, Suparto, Kaswanda, and A. Sudradjat, VSI.