Report on Marapi (Indonesia) — July 1988
Scientific Event Alert Network Bulletin, vol. 13, no. 7 (July 1988)
Managing Editor: Lindsay McClelland.
Marapi (Indonesia) Intermittent ash ejections continue
Please cite this report as:
Global Volcanism Program, 1988. Report on Marapi (Indonesia). In: McClelland, L (ed.), Scientific Event Alert Network Bulletin, 13:7. Smithsonian Institution. https://doi.org/10.5479/si.GVP.SEAN198807-261140.
0.38°S, 100.474°E; summit elev. 2885 m
All times are local (unless otherwise noted)
Small explosions occurred 1 July at 1420 and 8 July at 1900, depositing 0.5 mm of ash in Bukittinggi.
Geologic Background. Gunung Marapi, not to be confused with the better-known Merapi volcano on Java, is Sumatra's most active volcano. This massive complex stratovolcano rises 2000 m above the Bukittinggi plain in the Padang Highlands. A broad summit contains multiple partially overlapping summit craters constructed within the small 1.4-km-wide Bancah caldera. The summit craters are located along an ENE-WSW line, with volcanism migrating to the west. More than 50 eruptions, typically consisting of small-to-moderate explosive activity, have been recorded since the end of the 18th century; no lava flows outside the summit craters have been reported in historical time.
Information Contacts: VSI.