White Island volcano (New Zealand): constant venting of gas and steam emissions, no ash has been detected
Tue, 24 Jan 2023, 04:52
04:52 AM | BY: MARTIN
The active vent area generating moderate steam and gas emissions on 16 Jan (image: GeoNet)
Continuing degassing from the vent area as seen from space on 20 Jan (image: Sentinel-2)
GNS volcanologists completed a gas and observation flight on 16 January.
About SO2 and CO2 emissions, regular weak-to-moderate gas and steam plumes continue to emit from the same vent locations as in December 2022. Sulfur dioxide (SO2) concentrations contained approx. 37 tonnes/day and carbon dioxide (CO2) emissions encompassed about 780 tonnes/day. No ash emissions nor eruptive activity have been detected.
Over the last 3-months, InSAR (satellite) data has detected minor (1cm) subsidence in the vicinity of the 2019 eruption vent and continued localized uplift within the Main Crater floor. The intermittent movement of the 1914 landslide has also been observed.
Both alert levels, the Aviation Color Code and the Volcanic Alert Level remain at Yellow and Level 2, respectively.
Source: GeoNet New Zealand volcano activity update 24 January 2023
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Previous news
Wed, 14 Dec 2022, 15:00
Whakaari/White Island volcano (North Island, New Zealand) - Smithsonian / USGS Weekly Volcanic Activity Report for 7 December-13 December 2022 (Continuing Activity)
On 12 December GeoNet reported continuing unrest at Whakaari/White Island characterized by minor-to-moderate gas-and-steam emissions and low levels of gas. During an overflight on 6 December sulfur dioxide gas emissions averaged around 273 tonnes per day and carbon dioxide emissions averaged around 787 tonnes per day, levels similar to those last measured on 14 October. The lake level had decreased. ... Read all
Wed, 26 Oct 2022, 14:00
Whakaari/White Island volcano (North Island, New Zealand) - Smithsonian / USGS Weekly Volcanic Activity Report for 19 October-25 October 2022 (Continuing Activity)
On 26 October GeoNet reported continuing unrest at Whakaari/White Island characterized by persistent gas-and-steam emissions and intermittent, minor, passive ash emissions during the previous two weeks. Sulfur dioxide gas emissions were low, averaging around 217 tonnes per day when measured during an overflight on 7 October. During an observation overflight on 19 October scientists saw gas-and-steam plumes rising from several vents on the NW and W sides of the lake. ... Read all
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