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White Island volcano (New Zealand): high heat flow continues

Fri, 20 Aug 2021, 04:30
04:30 AM | BY: MARTIN
Near-continuous night-time glow at White Island volcano (image: GeoNet)
Near-continuous night-time glow at White Island volcano (image: GeoNet)
Gas and steam plumes from White Island volcano today (image: GeoNet)
Gas and steam plumes from White Island volcano today (image: GeoNet)
A gas measuring flight, thermal and visual observations from helicopter were made at the volcano by the local observatory last week to bolster currently degraded automated monitoring systems.
These measurements and observations show that the maximum active vent temperatures remain high at around 520°C. The GeoNet New Zealand continues to observe a night glow in webcam images.
Sulfur dioxide (SO2) emissions and carbon dioxide emissions (CO2) continue at moderate levels, similar to those measured on 20 July.
Due to very steamy conditions at the vent, no visual observations of fresh lava at the surface have been confirmed. However, the monitoring network likely indicates magma intrusions at shallow level.
Volcanic Alert Level remains at level 2 and the Aviation Colour Code remains at Yellow.
Source: GeoNet New Zealand volcano activity update 19 August 2021

Previous news

Wed, 18 Aug 2021, 06:00

Whakaari/White Island volcano (North Island, New Zealand) - Smithsonian / USGS Weekly Volcanic Activity Report for 18 August-24 August 2021 (New Activity / Unrest)

GeoNet maintained the Volcanic Alert Level at 2 and the Aviation Color Code at Yellow for Whakaari/White Island. A volcanic earthquake was recorded at 1900 on 19 August that continued for ten minutes; other seismic activity has been minor. Webcam images showed some incandescence during the night, which suggested that temperatures in the vent area were likely 500-600°C. ... Read all
Wed, 4 Aug 2021, 06:00

Whakaari/White Island volcano (North Island, New Zealand) - Smithsonian / USGS Weekly Volcanic Activity Report for 4 August-10 August 2021 (New Activity / Unrest)

GeoNet maintained the Volcanic Alert Level at 2 and the Aviation Color Code at Yellow for Whakaari/White Island based on continuing unrest and data collected during a recent overflight. In a 9 August report GeoNet noted that temperatures in the vent area remained high at 520 degrees Celsius; crater incandescence continued to be visible in webcams images at night. Moderate levels of carbon dioxide and sulfur dioxide emissions measured downwind of the volcano were similar to levels observed on 20 July. ... 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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