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Whakaari/White Island volcano (North Island, New Zealand) - Smithsonian / USGS Weekly Volcanic Activity Report for 17 November-23 November 2021 (Continuing Activity)

Mi, 17. Nov 2021, 06:00
06:00 AM | VON: VN
GeoNet reported results from an 18 November overflight of Whakaari/White Island, noting a decrease in gas emissions and the lake level. Gas measurements showed that sulfur dioxide emissions had decreased from 681 tons per day recorded on 2 November to 484 tons per day. Additionally, both carbon dioxide and hydrogen sulfide decreased from 2712 to 1416 tons per day and from 38 to 19 tons per day, respectively.
The gas data suggested that molten material at depth continued to degas. Temperatures in the main vent area were 243-264 degrees Celsius, similar to the range (202-264 degrees Celsius) measured both in September and earlier in November. Very minor ash emissions were visible and deposits only extended around the active vents.
A new vent was observed, located S of the main vent and near the base of the 2019 landslide area. Deposits around the new vent suggested that it formed by an energetic, steam-driven ejection of mud. 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 17 November-23 November 2021. Smithsonian Institution and US Geological Survey.

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Di, 9. Nov 2021, 02:18

White Island volcano (New Zealand): volcanic unrest continues, increased gas emissions

Increased gas emissions from White Island volcano (image: GeoNet)
The GeoNet observatory undertook visual, gas and temperature measurement flights last week as published in the latest bulletin. ... Read all
Mi, 3. Nov 2021, 06:00

Whakaari/White Island volcano (North Island, New Zealand) - Smithsonian / USGS Weekly Volcanic Activity Report for 3 November-9 November 2021 (Continuing Activity)

On 9 November GeoNet reported results from a recent overflight of Whakaari/White Island. Gas measurements showed that sulfur dioxide emissions had increased from 267 tons per day recorded on 14 October to 681 tons per day. Additionally, carbon dioxide increased from 757 to 2712 tons per day and hydrogen sulfide increased from 10 to 38 tons per day. ... Read all
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Schichtvulkan 321 m / 1,053 ft
Neuseeland, -37.52°S / 177.18°E
Aktueller Status: unruhig (2 von 5) Ausbrüche des White Island:
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
Typische Aktivität
Explosive (in historic time: frequent small phreatic and phreatomagmatic eruptions)
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