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11 Apr 2000 description
report Salvation Army

After a 14-hour journey from Manila, the Philippines, the five members of the Salvation Army relief team arrived in Legaspi - the site of the volcanic eruption - in two vehicles loaded with sleeping mats, blankets and foodstuff. The corps officers at Legaspi and the local emergency relief team packed the goods into plastic bags and the following day the team, after a courtesy call on the mayor, went to the Department of Social Welfare, which was coordinating the Disaster Assistance Programme.

04 Apr 2000 description

0700H

The Mayon Volcano seismic network recorded twenty nine (29) low frequency and two (2) high frequency volcanic earthquakes and twelve (12) episodes of low frequency short duration tremors for the past 24 hours. Ground deformation measurement using the Electronic Distance Meter along the northwest slope of the volcano showed no significant change from its deflated state. The sulfur dioxide emission rate decreased from 7,000 tonnes/day (t/d) to yesterday's reading of 6,270 t/d. Crater glow continued to be observed in the evening.

03 Apr 2000 description

0800H

Seismic activity of Mayon Volcano remained at a high level as the telemetered seismic network detected thirty three (33) low frequency volcanic earthquakes for the past 24 hours. Sulfur Dioxide emission rate further increased from 6,210 tonnes/day to 7,000 tonnes/day. However, ground deformation measurement was not conducted due to thick cloud cover. Steaming activity observed during cloud breaks was at moderate level. Crater glow was still visible with the naked eye.

02 Apr 2000 description

0700H

During the past observation period, a still high level of seismicity prevailed over Mayon Volcano as forty (40) low frequency and three (3) high frequency volcanic earthquakes and four (4) episodes of high frequency tremors were recorded by the Mayon Volcano telemetered seismic network. Sulfur Dioxide emission rate increased from 3,600 tonnes per day (t/d) yesterday to 6,210 t/d.

01 Apr 2000 description

0700H

Thirty-six (36) low frequency and two (2) high frequency volcanic earthquakes and three (3) episodes of high frequency short duration harmonic tremors were detected by Mayon Volcano telemetered seismic network during the past 24 hours. Ground deformation and Sulfur Dioxide emission rate measurements were not carried out due to inclement weather condition prevailing over the volcano area. During cloud breaks, a moderate emission of white steam was noted drifting towards west-southwest.

29 Mar 2000 description

At 2355H an audible hissing sound originating from the crater was heard at the northwest lower slope of the volcano. Similar events occurred at 2356H and 0132H today and were recorded as low frequency type volcanic earthquakes. Nine (9) low frequency and seven (7) high frequency volcanic earthquakes and four (4) episodes of high frequency short duration tremors were detected during the past 24 hours. On the other hand, the Sulfur Dioxide (SO2) emission rate dropped from 8,500 tonnes/day (t/d) to 1,200 tonnes/day (t/d).

29 Mar 2000 description

0700H

At 2355H an audible hissing sound originating from the crater was heard at the northwest lower slope of the volcano. Similar events occurred at 2356H and 0132H today and were recorded as low frequency type volcanic earthquakes. Nine (9) low frequency and seven (7) high frequency volcanic earthquakes and four (4) episodes of high frequency short duration tremors were detected during the past 24 hours. On the other hand, the Sulfur Dioxide (SO2) emission rate dropped from 8,500 tonnes/day (t/d) to 1,200 tonnes/day (t/d).

27 Mar 2000 description

by Ernesto G. Corpuz, Raymundo S. Punongbayan

Mayon Volcano in southeast Luzon erupted from 23 February to 07 March 2000. The initial eruption was characterized by relatively quiet dome extrusion at the summit crater and emission of lava flow to the southeast flanks. The main explosive phase commenced on the morning of 24 February, with the occurrence of pyroclastic flows which also descended the Bonga Gully southeast of the crater.

23 Mar 2000 description

The telemetered seismic network around Mayon Volcano detected nine (9) low frequency and two (2) high frequency volcanic earthquakes and 14 high frequency short duration tremors during the past 24 hours. Ground deformation measurements using Electronic Distance Meter (EDM) at the northwest slope of the volcano showed that the volcano is deflated. The sulfur dioxide (SO2) emission rate increased from 900 tonnes/day (t/d) to 4,400 t/d. During cloud breaks, moderate white steam was observed and drifted towards the northwest.

23 Mar 2000 description

Ref: OCHA/GVA - 2000/0064
OCHA Situation Report No. 5
Philippines - Volcanic Eruption

17 Mar 2000 description

SVE INFORMATIONS RELEASE - MARCH 17, 2000

14 Mar 2000 description

Ref: OCHA/GVA - 2000/0053
OCHA Situation Report No. 4
Philippines - Volcanic Eruption

12 Mar 2000 description

An ash puff with height of about one kilometer was observed on March 11 at 0903H,. The ash column was drifted to the northwest direction. The ash ejection was caused by water that comes in contact with the still hot lava deposits at the summit. And at 1242H, another minor billowing ash was seen descending the Bonga Gully due to the detachment of the new lava deposit at the upper slope. The elutriated ash cloud drifted to the west-southwest by the prevailing winds.

09 Mar 2000 description

Supplies and Water Purification Equipment Arrived

WASHINGTON, DC - U.S. Agency for International Development (USAID) Administrator J. Brady Anderson announced today the provision of $250,000 in relief supplies and water purification equipment to assist evacuees of the Mayon Volcano eruption in the Philippines. The supplies arrived in Legaspi, Philippines on Monday, March 7th. The two water purification units arrived in Manila on March 8th.

09 Mar 2000 description

MANILA, March 9 (Reuters) - Philippine scientists lowered the alert around the Mayon volcano on Thursday, saying it appeared to be quietening down, but warned the danger of mudflows from its slopes remained.

The vulcanology institute said it had downgraded the alert around Mayon, in the central Philippines, to level four, meaning it was still restive, from the maximum five, which meant it was in a state of eruption.

08 Mar 2000 description

The Mayon Volcano seismic network recorded low frequency volcanic quakes and short duration harmonic tremors. The measured SO2 gas emission rate of 3,900 tonnes/day, although low compared to recent measurements, is still way above the volcano's baseline level. Likewise, ground deformation surveys showed that the volcano's edifice is slightly inflated. At night, when the volcano's summit area was visible, intense crater glow continue to be observed. These data and observations suggest that the volcano is still at a state of unrest following the 01 March 2000 ash ejections.

07 Mar 2000 description

At 0746 H, a parallel collapse of the new lava flow deposit in the upper middle slopes produced a voluminous secondary pyroclastic flow. The billowing ash cloud descended the Bonga Gully to the southeast.

06 Mar 2000 description

LEGAZPI, Philippines, March 6 (Reuters) - Thousands of Philippine villagers ignored the danger of eruptions and made their way back to their homes under the deadly Mayon volcano on Monday, the fifth straight day of calm from the mountain crater.

But scientists refused to rule out the danger of further eruptions from the 2,460-metre (8,000-foot) volcano.

"In one to two weeks we might be able to say if the eruptions are finished," director Raymundo Punongbayan of the Philippine Institute of Vulcanology and Seismology told reporters.

Ignoring the danger of fresh …