White Island volcano (New Zealand): small crater collapse, unrest continues
Fr, 25. Mär 2022, 18:3418:34 PM | VON: MARTIN
Last week, the GeoNet volcanologists did gas and observation flights over the volcano.
Aerial view of the active vents at the volcano depicting the areas of collapse (image: GeoNet)
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
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