Video | Business Headlines | Internet | Science | Scientific Ethics | Technology | Search

 

7500sq Miles of Pumice from Underwater Volcano Located

10 August 2012

Defence Force Locates 7500sq Miles of Pumice from Underwater Volcano

An area of floating pumice 250 nautical miles in length and 30 nautical miles wide was spotted in the South Pacific ocean yesterday by a Royal New Zealand Air Force (RNZAF) Orion.

The RNZAF Orion, which was on Maritime patrol from Samoa to New Zealand, relayed the information to HMNZS CANTERBURY and last night, approximately 85 nautical miles West South-West of Raoul Island CANTERBURY spotted the phenomenon.

An area of floating pumice 250 nautical miles in length and 30 nautical miles wide was spotted in the South Pacific ocean yesterday by a Royal New Zealand Air Force (RNZAF) Orion.
Click for big version.

Lieutenant (LT) Tim Oscar, a Royal Australian Navy officer on a three year exchange with the Royal New Zealand Navy, saw what he describes as, "the wierdest thing I've seen in 18 years at sea."

"The lookout reported a shadow on the ocean ahead of us so I ordered the ship's spotlight to be trained on the area.

"As far ahead as I could observe was a raft of pumice moving up and down with the swell.

"The rock looked to be sitting two feet above the surface of the waves, and lit up a brilliant white colour in the spotlight. It looked exactly like the edge of an ice shelf," said LT Oscar.

LT Oscar said he had been briefed by GNS Volcanologist Helen Bostock the previous day when the ship first encountered an area of pumice from an undersea volcano.

An area of floating pumice 250 nautical miles in length and 30 nautical miles wide was spotted in the South Pacific ocean yesterday by a Royal New Zealand Air Force (RNZAF) Orion.
Click for big version.

"I knew the pumice was lightweight and posed no danger to the ship. None the less it was quite daunting to be moving toward it at 14 knots. It took about 3 - 4 minutes to travel through the raft of pumice and as predicted there was no damage. As we moved through the raft of pumice we used the spotlights to try and find the edge - but it extended as far as we could see."

HMNZS CANTERBURY is on passage from Auckland to Raoul Island in the Kermadec Group with a party of GNS scientists onboard. The Commanding Officer, Commander Sean Stewart changed course to intercept the pumice, and brought the ship to a halt to enable retrieval of samples. The samples will be analysed to determine which volcano they came from.

An area of floating pumice 250 nautical miles in length and 30 nautical miles wide was spotted in the South Pacific ocean yesterday by a Royal New Zealand Air Force (RNZAF) Orion.
Click for big version.

According to GNS Science the underwater volcano, Monowai, has been active along the Kermadec Arc and the pumice could be a result of that activity.

The GNS scientists onboard believe the volcanic activity of Tongariro, White Island and along the Kermadec arc is unrelated.

ENDS

© Scoop Media

 
 
 
Business Headlines | Sci-Tech Headlines

 

Reserve Bank: Policy Lessons From A Year Of Covid-19

The Reserve Bank of New Zealand – Te Pūtea Matua was in a sound position to continue to meet its mandate in the face of the COVID-19 induced economic shock. However, we must continue to transform so as to remain relevant and effective in addressing longer-term challenges, Reserve Bank Governor Adrian Orr said... More>>


Transport Industry Association: Feb 2021 New Vehicle Registrations Strongest On Record

Motor Industry Association Chief Executive David Crawford says that the February 2021 figures are the strongest for the month of February ever. Registrations of 12,358 were 8.0% up on February 2020. Year to date the market is up 7.1% (1,735 units) compared to the first two months of 2020... More>>

Paymark: Lockdown Equals Slowdown For Some

The three days of lockdown for Auckland earlier this month made a clear impression on our retail spending figures. While only Auckland moved into Level 3 lockdown, the impact was felt across the country, albeit at different levels. Looking at the ... More>>

Infrastructure Commission: Te Waihanga Releases Report On Water Infrastructure

The New Zealand Infrastructure Commission, Te Waihanga’s latest discussion document highlights the importance of current reforms in the water sector. Its State of Play discussion document about water infrastructure is one of a series looking at the ... More>>


OECD: Annual Inflation Picks Up To 1.5% In January 2021 While Euro Area Records Sharp Increase To 0.9%

Annual inflation in the OECD area picked up to 1.5% in January 2021, compared with 1.2% in December 2020. Following a rebound between December and January, the annual decline in energy prices was less pronounced in January (minus 3.9%) than in December... More>>


Hemp Industries Association: Could The Next Team NZ Boat Be Made Entirely Of Hemp?

With The America’s Cup due to start in a few days’ time, innovators from a very different sphere have been wondering how long it could be before New Zealand could be competing in a boat entirely built from hemp, with the crew eating high-energy, nutritious hemp-infused foods and wearing high-performance hemp kit..? More>>


ACT: Matariki Almost A Half Billion Dollar Tax On Business

“Official advice to the Government says an extra public holiday at Matariki could cost almost $450 million,” ACT Leader David Seymour can reveal. “This is a perfect example of the Prime Minister doing what’s popular versus what’s responsible. ... More>>

Genesis: Assessing 6,000 GWh Of Renewable Generation Options For Development By 2025

Genesis is assessing 6,000 GWh of renewable generation options for development after starting a closed RFP process with 11 partners. Those invited to participate offer a range of technologies as Genesis continues to execute its Future-gen strategy to ... More>>