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Report on Kanlaon (Philippines) — 25 November-1 December 2015


Kanlaon

Smithsonian Institution / US Geological Survey
Weekly Volcanic Activity Report, 25 November-1 December 2015
Managing Editor: Sally Sennert.

Please cite this report as:

Global Volcanism Program, 2015. Report on Kanlaon (Philippines) (Sennert, S, ed.). Weekly Volcanic Activity Report, 25 November-1 December 2015. Smithsonian Institution and US Geological Survey.

Weekly Report (25 November-1 December 2015)

Kanlaon

Philippines

10.412°N, 123.132°E; summit elev. 2435 m

All times are local (unless otherwise noted)


PHIVOLCS reported that the seismic network for Kanlaon detected 11 volcanic earthquakes during 24-25 November. Emissions of gas and ash rose 150 m above the crater and drifted SW on 25 November. 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 island of Negros, Philippines. 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)