Tech & Science Little-known eruption near NZ the biggest in 100 years

02:35  11 january  2018
02:35  11 january  2018 Source:   msn.com

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Scientists studying a little - known volcano off the coast of New Zealand now believe its 2012 eruption was one of the biggest the world has seen in the last 100 years .

Little - known eruption near NZ the biggest in 100 years Scientists studying a little - known volcano off the coast of New Zealand now believe its 2012 eruption was one of the biggest the world has seen in the last 100 years . www.newshub.co. nz /…2018/01/ little - known - eruption

A two-year study has been carried out into the eruption. © Supplied A two-year study has been carried out into the eruption.

Scientists studying a little-known volcano off the coast of New Zealand now believe its 2012 eruption was one of the biggest the world has seen in the last 100 years.

The Havre volcano, on the floor of the Pacific Ocean about 1000km northeast of the North Island, was only discovered in 2002. Its 2012 eruption went unnoticed until a Kiwi woman saw something strange while flying home from Samoa.

a close up of a map © Provided by MediaWorks NZ Limited

"I took a couple of pictures, wondering if it was an algal bloom, oil spill or, recalling a conversation with a friend the week before, a deposit from a volcano," artist Maggie de Grauw told the Waikato Times in 2013.

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Little - known deep sea volcanic eruption that took place just 600 miles from New Zealand was the world's largest in 100 years . The biggest underwater eruption of the last century took place 600 miles (1,000km) off the coast of New Zealand , scientists have found.

Little - known eruption near NZ the biggest in 100 years . Mt Ruapehu's last eruption was in 2007. It caused two lahars and sent rocks flying. One hit a teacher in the leg, which had to be amputated.

A week later, the massive deposit of ash and pumice was found by an Air Force Orion crew, and satellite imagery soon showed it was 480km long and about 50km wide - bigger than Israel.

Researchers from the University of Tasmania and around the world have spent the past two years investigating the eruption, and now think it was one to rival the biggest we've seen in recent history.

"We knew it was a large scale eruption, approximately equivalent to the biggest eruption we've seen on land in the 20th Century," said volcanologist Dr Rebecca Carey, who led the study.

"The eruption was very complex, involving more than 14 aligned vents that represent a massive rupture of the volcanic edifice."

  Little-known eruption near NZ the biggest in 100 years © Provided by MediaWorks NZ Limited

The pumice - solidified lava filled with air bubbles - ended up on beaches across the Pacific, including New Zealand and Australia.

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  Lava flowing from Philippine volcano, thousands evacuated More than 9,000 people have evacuated the area around the Philippines' most active volcano.© The Associated Press In this image made from video, dark pyroclastic ash cloud rises from Mayon volcano after its eruption as seen from Legazpi city, Albay province, around 340 kilometers (200 miles) southeast of Manila, Philippines, Monday, Jan. 15, 2018. More than 9,000 people have evacuated the area around the Philippines' most active volcano as lava flowed down its crater Monday in a gentle eruption that scientists warned could turn explosive.

Tarawera, New Zealand . Over a year ago. by Erik Klemetti. After the 1300 A.D. eruption , there is little evidence for eruptive activity (beyond phreatic explosions) in the Tarawera region. Waimangu Geyser in New Zealand seen in 1903-4. So, now you know what happened near Tarawera in that

Where volcanic eruptions have affected agricultural land, the depth of ash have all been at less The latest of these occurred about 6,300 years ago, following the largest eruption known in the history However, if an eruptive episode has 100 discrete ash producing events, there is a 63% probability

Ms de Grauw even found some herself six months later, which she turned into jewellery.

The eruption wasn't good news for local wildlife however, and Dr Carey says biologists are "very interested to learn more about how species recolonise, and where those new species are coming from".

"There is a decade worth of interdisciplinary science to do based on our 2015 voyage data and samples. It's very exciting to marry the geosciences with other scientific disciplines addressing novel research questions."

The study was published Thursday in journal Science Advances.

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