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

MAYON VOLCANO UPDATE
DATE:
13 February 2010, 0800H

ALERT LEVEL: 2



MONITORED
PARAMETERS

LATEST OBSERVATIONS
PREVIOUS OBSERVATION
Seismicity
Two (2) volcanic earthquakes and eleven (11) rockfall events were detected by the seismic network.

The seismic network recorded a total of twenty-six (26) volcanic earthquakes and fifty seven (57) rockfall events (01 – 07 Feb 2010). 
Ground Deformation
Buang Leveling Line
(05-10 January 2010 survey)
Deflation


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


MRHO Tiltmeter
(29 January to 12 February 2010)
Deflation


Buang Leveling Line

(27 Nov.– 03 Dec. 2009 survey)

No change relative to 08-10 Nov. 2009 survey. Overall, the volcano remained inflated by five (5.0) mm. cumulative to February 2008 baseline data

 

Lidong Leveling Line

(27Nov – 03 Dec. survey)

One (1.0) mm. inflation relative to 05 -06 Nov. 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)


1167 tonnes/day

(12 Feb. 2010)



719 tonnes/day

(11 Feb. 2010)


 425 tonnes/day

(10 Feb. 2010)


447 tonnes/day

(09 Feb. 2010)


430 tonnes/day

(08 Feb. 2010)


Crater glow
Intensity II

Intensity II

Steaming Activity

Obscured
Wispy

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 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.



Note: This serves as the official PHIVOLCS bulletin for today. 

 

 

 

Issued by:  J. Puertollano & E. Del Mundo    

 

Noted by: JAIME S. SINCIOCO

  
OIC, VMEPD 
 

PHILIPPINE STANDARD TIME

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