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Mayon Volcano Update PDF Print
Friday, 29 January 2010 12:12

MAYON VOLCANO UPDATE
DATE:
29 January 2010, 08:00am

ALERT LEVEL: 2



MONITORED
PARAMETERS

LATEST OBSERVATIONS
PREVIOUS OBSERVATION
SeismicityFive (5) volcanic earthquakes and twelve (12) rockfall events were detected by the seismic network.The seismic network recorded a total of seventeen (17) volcanic earthquakes and sixty-nine (69) rockfall events. (18-24 January 2010)
Ground Deformation
Buang Leveling Line
(05-10 January 2010 survey)
Deflation

Lidong Leveling Line
(05-10 January 2010 survey)
Deflation

MRHO Tiltmeter
(26-28 January 2010)
Deflation



Buang Leveling Line
(27 November - 03 December 2009 survey)
No Change relative to 08-10 November 2009 survey. Overall, the volcano remained inflated by five (5.0) mm. cumulative to February 2008 baseline data.

Lidong Leveling Line
(27 November -03 December 2009 survey)
One (1.0) mm. inflation relative to 05-06 November 2009 survey. Overall, the volcano remained inflated by four (4.0) mm. cumulative to October 2007 baseline data.

MRHO Tiltmeter
(11-17 January 2010)
Deflation

SO2 Flux Reading (FlySpec)

1,687 tonnes/day
(28 January 2010)

1,213 tonnes/day
(27 January 2010)

868 tonnes/day
(26 January 2010)

288 tonnes/day
(25 January 2010)

1,076 tonnes/day
(24 January 2010)

Crater glow
Intensity II

Intensity II

Steaming Activity

Moderate
Wispy - weak

REMARKS/RECOMMENDATION:

Alert Level 2 is in effect over Mayon Volcano. PHIVOLCS-DOST recommends that the public should not enter the six (6) kilometer radius Permanent Danger Zone (PDZ) and the 7-km Extended Danger Zone on the southeast of the volcano due to continuing threat from sudden explosions, rockfalls from the upper slopes and pyroclastic flows due to sudden collapse of unstable lava deposits. Active river channels and those perennially identified as lahar prone in the southern sector should also be avoided especially during bad weather conditions or when there is heavy and prolonged rainfall.

 
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