from GNS Science... Volcanic Alert Bulletin WI-2013/19 - White Island Volcano 21 August 2013, 1:00pm - White Island eruption information update; Volcanic Alert Level lowered to 1 (from 2) and the Aviation Colour Code lowered to Yellow (from Orange). Following the lower level of activity at White Island since yesterday’s eruption, GNS Science has lowered the Volcanic Alert Level to 1 and the Aviation Colour Code to Yellow. The level of volcanic activity at White Island has decreased substantially since yesterday’s eruption. Steam and gas continue to be emitted from the active crater, in a similar fashion to that prior to the eruption. The GeoNet monitoring network continues to record seismic activity, as expected from a volcano that has been experiencing unrest for over a year. GNS volcanologist Agnes Mazot said: “We are planning to fly around the White island and take airborne measurements of the amount of gas being emitted from the volcano. The weather is not cooperating at the moment and will are aiming at a flight possibly on Friday”. Although the activity at White Island is currently at a low level, eruptions similar to those experienced over the past year are possible with no prior warning. These include mud geysering, more energetic eruptions similar to yesterday’s event, or ash from the active vents. Such eruptions can eject mud and rocks and may impact the crater floor area where visitors to the island may be. There is presently no clear indication that yesterday’s eruption is leading to a large eruption, but eruptions similar to those in the last year cannot be excluded over the days or weeks to come. The Volcanic Alert Level is now at 1 and the Aviation Colour Code at Yellow. GNS Science continues to closely monitor the activity at White Island and other New Zealand volcanoes through the GeoNet project. The next bulletin will be issued if there is a change in activity. Nico Fournier Duty Volcanologist Contact: Brad Scott
Posted on: Wed, 21 Aug 2013 03:06:21 +0000
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