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Mayon Volcano Update PDF Print
Thursday, 28 January 2010 10:55

MAYON VOLCANO UPDATE

28 January 2010; 8:00 AM

Alert Level: 2

MONITORED PARAMETERS

LATEST OBSERVATIONS

PREVIOUS OBSERVATIONS

Seismicity

 

 

One (1) volcanic earthquake and six (6) 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 Jan. 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 Jan. 2010)

Deflation

 

 

 

SO2  Flux Reading

(FlySpec)

 

1,213 tonnes/day

(27 Jan. 2010)

 

868 tonnes/day

(26 Jan. 2010)

288 tonnes/day

(25 Jan. 2010)

1076 tonnes/day

(24 Jan. 2010)

1001 tonnes/ day

(23 Jan. 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 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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