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Report on Kanlaon (Philippines) — 22 June-28 June 2016


Kanlaon

Smithsonian Institution / US Geological Survey
Weekly Volcanic Activity Report, 22 June-28 June 2016
Managing Editor: Sally Sennert.

Please cite this report as:

Global Volcanism Program, 2016. Report on Kanlaon (Philippines) (Sennert, S, ed.). Weekly Volcanic Activity Report, 22 June-28 June 2016. Smithsonian Institution and US Geological Survey.

Weekly Report (22 June-28 June 2016)

Kanlaon

Philippines

10.4096°N, 123.13°E; summit elev. 2422 m

All times are local (unless otherwise noted)


PHIVOLCS reported that during 22-23 and 25-26 June white steam plumes from Kanlaon rose as high as 800 m and drifted NW and SW; wispy steam plumes were observed on 27 June. Starting at 1640 on 23 June the seismic network recorded a 4-minute-long, explosion-type signal; weather clouds prevented visual observations of the summit area. The Alert Level remained at 1 (on a scale of 0-5).

Geological Summary. Kanlaon volcano (also spelled Canlaon) forms the highest point on the Philippine island of Negros. The massive andesitic stratovolcano is covered with fissure-controlled pyroclastic cones and craters, many of which are filled by lakes. The largest debris avalanche known in the Philippines traveled 33 km SW from Kanlaon. The summit contains a 2-km-wide, elongated northern caldera with a crater lake and a smaller but higher active vent, Lugud crater, to the south. Eruptions recorded since 1866 have typically consisted of phreatic explosions of small-to-moderate size that produce minor local ashfall.

Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)