Fagradalsfjall (Reykjanes Peninsula, Iceland): (1 Jul) On 26 June, the University of Iceland’s Institute of Earth Sciences reported a summary of eruption parameters documented since May 10. The parameters showed lava flow discharge rate, lava area, lava volume, rock geochemistry and volcanic gases. The graph below depicts an overview of the results.
Lava flow discharge rate
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Sarychev Peak (Central Kuriles): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: VA IS NOT IDENTIFIABLE IN SATELLITE IMAGERY.
…1 Jul:
SVERT reported that ash emissions were identified in a satellite image today.
An ash plume reached 10,000 ft (3,048 m) altitude and extended about 30 km to the W-NW of the volcano.
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Ebeko (Paramushir Island): (1 Jul) Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20210701/0418Z FL100 EXTD E REPORTED OBS VA DTG:01/0410Z
Suwanose-jima (Ryukyu Islands): (1 Jul) Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: EXPLODED AT 20210701/0241Z FL050 EXTD E OBS VA DTG:01/0240Z
Taal (Luzon, Philippines): (1 Jul) Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION FL050 REPORTED AT 20210701/0743Z OBS VA DTG:01/0740Z
…1 Jul:
Strong sulfur dioxide (SO2) emissions, detected on 28 June, caused volcanic smog (so-called vog) in Taal caldera.
Vog is a hazy mixture of SO2 gas and aerosols (tiny particles or droplets) which are primarily sulfuric acid and other sulfate (SO4) compounds. Aerosols are created when SO2 and other volcanic gases combine in the atmosphere and interact chemically with oxygen, moisture, dust, and sunlight over minutes to days. The exact composition of vog depends on how much time the volcanic plume has had to react in the atmosphere. In areas far (tens to hundreds of km or miles) from active vents, aerosols are the main component of vog. Closer to the volcano, vog contains both aerosols and unreacted SO2 gas.
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Dukono (Halmahera): (1 Jul) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 7000 ft (2100 m) altitude or flight level 070 .
The full report is as follows: CONTINUOUS VA EMISSION TO FL070 MOV N OBS VA DTG:01/0710Z to 7000 ft (2100 m)
Nevado del Ruiz (Colombia): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: NO VA OBS
Sangay (Ecuador): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 20000 ft (6100 m) altitude or flight level 200 .
The full report is as follows: OCNL EM to 20000 ft (6100 m)
Sabancaya (Peru): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Buenos Aires warned about a volcanic ash plume that rose up to estimated 25000 ft (7600 m) altitude or flight level 250 and is moving at 20 kts in SW direction.
The full report is as follows: INTERMITTENT PUFF EMISSION to 25000 ft (7600 m)
