Logo link to homepage

Report on Kanlaon (Philippines) — 16 December-22 December 2015


Kanlaon

Smithsonian Institution / US Geological Survey
Weekly Volcanic Activity Report, 16 December-22 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, 16 December-22 December 2015. Smithsonian Institution and US Geological Survey.

Weekly Report (16 December-22 December 2015)

Kanlaon

Philippines

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

All times are local (unless otherwise noted)


PHIVOLCS reported that at 2138 on 15 December a low-frequency earthquake at Kanlaon that lasted 45-47 seconds possibly corresponded to an ash emission, though inclement weather prevented visual observations of the crater. Rumbling was heard in neighborhoods on the SE flank. On 17 December white steam plumes rose 50 m above the crater. Poor weather conditions prevented views of the crater through 22 December.

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)