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White Island volcano (New Zealand): small crater collapse, unrest continues

Fri, 25 Mar 2022, 18:34
18:34 PM | BY: MARTIN
Aerial view of the active vents at the volcano depicting the areas of collapse (image: GeoNet)
Aerial view of the active vents at the volcano depicting the areas of collapse (image: GeoNet)
Last week, the GeoNet volcanologists did gas and observation flights over the volcano.
The geysering activity continues to be active from a small grey pond located at the south flank of the 2019 Main Crater. Gas emissions and vent temperatures (290 °C) have decreased since the last measurements.
During the flights, a small collapse has been observed in one of the 2019 craters. The GeoNet observatory continues: "The formation of collapse craters at Whakaari/White Island was common in the past and was thought to be caused by either withdrawal of liquid beneath the crater or the removal of fine-grained ash during recent ash emissions. While this collapse activity poses no immediate hazard, it shows that the shallow crater environment remains dynamic and is changing in response to pressure variations beneath the active craters. This is a sign of continuing unrest."
Volcanic tremor continues at low-levels.
Volcanic Alert Level remains at level 2 and the Aviation Colour Code remains at Yellow.
Source: GeoNet New Zealand volcano activity update 25 March 2022

Previous news

Wed, 23 Mar 2022, 19:37

Whakaari/White Island volcano (North Island, New Zealand) - Smithsonian / USGS Weekly Volcanic Activity Report for 16 March-22 March 2022 (Continuing Activity)

On 23 March GeoNet reported that volcanologists observed Whakaari/White Island and took gas measurements during overflights the week before. The active vent area had subsided, and small collapses in one of the 2019 craters had occurred in between the flights. During the second flight, scientists observed geysering from a small, gray-colored pool on the S side of the main crater. ... Read all
Thu, 24 Feb 2022, 02:25

White Island volcano (New Zealand): emitting ash emissions, geysering activity formed mud pit crater

The activity at White Island volcano (image: GeoNet)
On 17 February, the GeoNet volcanologists did an observation flight over the volcano. ... 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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