Archive for the ‘Eruptions – Observations’ Category

Eruption at Tongariro

Wednesday, November 21st, 2012

A small ash eruption occurred at Mt. Tongariro in the central North Island this afternoon.


Tongariro Eruption

Thursday, August 9th, 2012

Mt Tongariro erupted just before midnight on Monday night, creating three new craters on its northern slopes.


Eruptions at White Island Volcano

Thursday, August 9th, 2012

An abrupt change at White Island in the Bay of Plenty at the end of July has continued, with the volcano now producing ash for the first time in more than a decade.


Changes at White Island

Friday, August 3rd, 2012

A period of relative quiet at White Island has ended, with increased gas emissions, an abrupt rise in the level of the crater lake and bursts of volcanic tremor.


Volcanic Unrest at Mt. Tongariro

Wednesday, August 1st, 2012

Low-level activity which began at Mt. Tongariro on July 13th has continued, and GNS Science has increased its monitoring of the volcano. Seismic activity and volcanic gas emissions confirm a low level of unrest.


Mt. Ruapehu Heating

Tuesday, March 8th, 2011

Mt. Ruapehu’s crater lake is at its hottest temperature since 2003.


Raoul Webcam Back Online

Sunday, November 7th, 2010

The webcam at Raoul Island is back online.


Lightning Damage at Raoul

Friday, May 7th, 2010

A lightning strike at Raoul Island during April damaged some of the infrastructure that GeoNet installed in May last year.


Ruapehu’s Crater Lake Rises

Wednesday, July 15th, 2009

The crater lake at the central North Island volcano, Mt. Ruapehu, rose slightly on Monday evening.


Raoul Online

Thursday, May 28th, 2009

New Zealand’s northernmost chain of volcanoes, the Kermadec Islands, came online yesterday when GeoNet added a new seismograph and webcam to their website.


Recent Undersea Eruption in the Kermadec Ridge

Thursday, March 19th, 2009

A recent eruption at an undersea volcano on the Kermadec Ridge has caused the crater to be filled with debris and reduced the summit of Rumble III volcano by 100 metres.


Focus on Taupo

Saturday, December 13th, 2008

People interested in activity at Taupo volcano are in for a bit of a feast at the moment. GeoNet has released an article describing their monitoring at the massive caldera volcano, and Radio New Zealand National is featuring Taupo in this week’s edition of “Earthworks”.


Quake Activity at Mt. Ngauruhoe Decreases

Saturday, December 6th, 2008

Declining earthquake activity at Mt. Ngauruhoe has caused GNS Science to reduce the volcano’s alert status.


White Island Crater Refilling

Friday, October 24th, 2008

The crater lake at White Island is refilling, with the water temperature remaining hot while steam, gas and mud emissions from the largest nearby vent increase.


Mt. Ruapehu Enters Heating Cycle

Friday, September 19th, 2008

Cooling of the hydrothermal system at Mt. Ruapehu has ceased and the volcano appears to have entered another cycle of heating.