Contact | RSS | EN | DE | EL | ES | FR | IT | RU

Whakaari/White Island volcano (North Island, New Zealand) - Smithsonian / USGS Weekly Volcanic Activity Report for 22 September-28 September 2021 (Continuing Activity)

Wed, 22 Sep 2021, 06:00
06:00 AM | BY: VN
On 27 September GeoNet reported results from an overflight of Whakaari/White Island the previous week. Gas measurements showed that sulfur dioxide emissions had increased to 680 tons per day from 450 tons per day recorded in mid-August, continuing the trend of an increasing emission rate noted over the past few months. The gas data suggested magma input deeper in the system.
Temperatures in the main vent area notably decreased to 189 degrees Celsius from July and August measurements of 650 degrees, possibly indicating cooling caused by groundwater infiltration. Minor ash deposits from recent emissions were visible around the active vents. Seismicity was characterized by low levels of volcanic tremor and occasional low-frequency volcanic earthquakes.
Subsidence continued to be measured by satellite. The Volcanic Alert Level remained at 2 and the Aviation Color Code remained at Yellow.

Source: GeoNet
---
From: Global Volcanism Program, 2021. Report on Whakaari/White Island. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 22 September-28 September 2021. Smithsonian Institution and US Geological Survey.

Previous news

Wed, 15 Sep 2021, 06:24

White Island volcano (New Zealand): intermittent weak ash emissions continue

Very fine ash particles have adhered to webcams and visibility is very limited (image: GeoNet)
The GeoNet New Zealand published that the activity at the volcano continues at reduced levels. ... Read all
Wed, 8 Sep 2021, 06:00

Whakaari/White Island volcano (North Island, New Zealand) - Smithsonian / USGS Weekly Volcanic Activity Report for 8 September-14 September 2021 (New Activity / Unrest)

On 14 September GeoNet reported that intermittent ash emissions at Whakaari/White Island continued to be visible during the previous week. Vigorous fumarolic plumes from the active vent area sometimes carried minor amounts of ash downwind at low altitudes and occasionally deposited ash on the island. Periods where ash was visible in the emissions did not correspond to explosive seismic or acoustic signals, suggesting that the ash was produced by weak wall fragments falling into the gas stream through the active vents and not from eruptive activity. ... 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)
Try our free app!
Volcanoes & Earthquakes - new app for Android
Android | iOS version

More on VolcanoDiscovery

Support us - Help us upgrade our services!

We truly love working to bring you the latest volcano and earthquake data from around the world. Maintaining our website and our free apps does require, however, considerable time and resources.
We need financing to increase hard- and software capacity as well as support our editor team. We're aiming to achieve uninterrupted service wherever an earthquake or volcano eruption unfolds, and your donations can make it happen! Every donation will be highly appreciated. If you find the information useful and would like to support our team in integrating further features, write great content, and in upgrading our soft- and hardware, please make a donation (PayPal or Online credit card payment).

Planned features:
  • Improved multilanguage support
  • Tsunami alerts
  • Faster responsiveness
Thanks to your past donations, these features have been added recently:
  • Design upgrade
  • Detailed quake stats
  • Additional seismic data sources
Download and Upgrade the Volcanoes & Earthquakes app to get one of the fastest seismic and volcano alerts online:
Android | IOS
Thank you!
Sources: VolcanoDiscovery / VolcanoAdventures and other sources as noted.
Use of material: Most text and images on our websites are owned by us. Re-use is generally not permitted without authorization. Contact us for licensing rights.
Volcanoes & Earthquakes
VolcanoDiscovery Home
Volcanoes | Earthquakes | Photos | Volcano News | App
Adventure & Study Travel
Tours to Volcanoes and Volcanic Areas: walking tours, photo tours, study tours
Tours & Dates | FAQ | About us
Get our newsletter!
Company info
Contact | Legal info | Terms & conditions
Follow us
Follow us on facebook Follow us on Instagram Follow us on Twitter Visit our Youtube channel
EN | DE | EL | ES | FR | IT | RU
VolcanoDiscovery GmbH, Germany, Reg. nr.: HRB 103744, EU Tax Id: DE 310 395 322 owned and created by
Dr. Tom Pfeiffer, volcanologist, volcano photographer, tour organizer member of
IAVCEI
Volcanological Society
Ecotourism Greece
Insured by R+V
VolcanoDiscovery © 2004- All Rights Reserved | Privacy - cookie settings