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Whakaari/White Island volcano (North Island, New Zealand) - Smithsonian / USGS Weekly Volcanic Activity Report for 8 September-14 September 2021 (New Activity / Unrest)

Wed, 8 Sep 2021, 06:00
06:00 AM | BY: VN
On 14 September GeoNet reported that intermittent ash emissions at Whakaari/White Island continued to be visible during the previous week. Vigorous fumarolic plumes from the active vent area sometimes carried minor amounts of ash downwind at low altitudes and occasionally deposited ash on the island. Periods where ash was visible in the emissions did not correspond to explosive seismic or acoustic signals, suggesting that the ash was produced by weak wall fragments falling into the gas stream through the active vents and not from eruptive activity.
Seismicity was characterized by low levels of volcanic tremor and occasional volcanic earthquakes. The Volcanic Alert Level remained at 2 and the Aviation Color Code remained at Yellow.

Source: GeoNet
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From: Global Volcanism Program, 2021. Report on Whakaari/White Island. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 8 September-14 September 2021. Smithsonian Institution and US Geological Survey.

Previous news

Tue, 7 Sep 2021, 04:23

White Island volcano (New Zealand): ash emissions continue at reduced levels, night-time glow continues

Steam emissions continue from the vent at the volcano (image: GeoNet)
Continuing ash emissions observed at the volcano on the last week, have now decreased as published by the GeoNet New Zealand. ... Read all
Fri, 3 Sep 2021, 03:00

White Island volcano (New Zealand): continuing ash emissions

Ash emissions from White Island volcano as visible in the webcam screenshot (image: GeoNet)
The GeoNet New Zealand reported that minor ash emissions have been observed by surveillance cameras starting around 06:50 local time this morning. ... Read all
Show more
White Island volcano
stratovolcano 321 m / 1,053 ft
New Zealand, -37.52°S / 177.18°E
Current status: restless (2 out of 5) White Island volcano eruptions:
2019, 2016, 2013, 2012, 2001, 1998-2000, 1998, 1995, 1986-94, 1983-84, 1976-82, 1974, 1971, 1971, 1970, 1969, 1968-69, 1966-67, 1962, 1959, 1958, 1957, 1955, 1947, 1933, 1930, 1928, 1926, 1924, 1922, 1909, 1908 (?), 1886?,1886, 1885 (?), 1885, 1856 (?), 1836, 1826
Typical eruption style
Explosive (in historic time: frequent small phreatic and phreatomagmatic eruptions)
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