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

 

NIWA Mapping Seafloor Around Whakaari/White Island

NIWA scientists are heading to the waters around Whakaari/White Island in the Bay of Plenty next week to survey changes to the seafloor.

Mapped in 2005 and again in 2019, the area is known for its underwater vents and canyons. However, the eruption of Whakaari/White Island in December last year is likely to have significantly altered the seafloor landscape.

NIWA marine geologist Dr Joshu Mountjoy says the survey work will help understanding of how much sediment was dislodged in the eruption and where it has gone.

“What is visible from sea level is only a small part of the volcano – most of it is under the ocean so we want to see how that submarine environment has changed.”

Scientists will be on board NIWA research vessel Tangaroa and will map the area using a multibeam echo sounder which emits sound beams that map the seafloor and objects in the water column such as gas bubbles. This technology does not disturb the seabed.

Water samples will also be taken to measure methane and carbon dioxide gas levels which will help detect the presence of underwater seeps linked to volcanic activity.

Dr Mountjoy says the aim of the survey is to understand how these sedimentary deposits have changed and if there have been any submarine landslides.

“There is also the potential to see new hydrothermal vents – particularly in shallow water close to the island. No-one has collected water column imaging close to Whakaari so this is an incredible opportunity to discover new areas of volcanic activity.”

The scientists will also be looking for significant changes that may have affected the ecology of the area that may require further work.

The survey is part of a nine-day voyage led by fisheries acoustics scientist Dr Yoann Ladroit starting on July 22 that will also survey the chemical composition of gases released by the hydrothermal vents on what is known as the Calypso vent field in the Bay of Plenty.

Results will be made public over the next few months.

© Scoop Media

 
 
 
Business Headlines | Sci-Tech Headlines

 

Mining: OceanaGold Announces Receipt Of WKP Mining Permit

MELBOURNE, Australia, Aug. 6, 2020 /CNW/ - OceanaGold Corporation (TSX: OGC) (ASX: OGC) (the 'Company') is pleased to announce it has received the mining permit for Wharekirauponga ('WKP') on the North Island of New Zealand. ... More>>

ALSO:

Economy: COVID-19 Lockdown Has Widespread Effects On Labour Market

In the June 2020 quarter, the seasonally adjusted unemployment rate fell to 4.0 percent, down from 4.2 percent last quarter, while underutilisation rose, Stats NZ said today. More>>

ALSO:

NZ Post: New Research By NZ Post Shows Online Shopping Grew 105% In Alert Level 3

New research by NZ Post into how the COVID-19 response has impacted the way Kiwis shop online, shows online shopping increased 105%* when the country moved into Alert Level 3, and may have changed the way Kiwis shop permanently. Online spend peaked ... More>>

ALSO:

Banking: Westpac NZ Lowers Merchant Fees For Small Businesses

Westpac NZ is rolling out a new merchant fee pricing structure that will lead to cost savings for more than 10,000 small and medium Kiwi businesses, and could make contactless transactions more widely available for customers. On 1 September, most ... More>>

REINZ: Million Dollar Plus Property Sales Increase 11.7% Nationally

The number of properties sold around the country for one million dollars or more during the first half (H1) of 2020 increased by 11.7% compared to H1 2019, with 5,426 million-dollar plus properties sold (up from 4,858 in H1 2019) according to the Real ... More>>

Waste: Government To Regulate Plastic Packaging, Tyres, E-Waste

The Government is stepping up action to deal with environmentally harmful products – including plastic packaging, tyres and e-waste – before they become waste. As part of the wider plan to reduce the amount of rubbish ending up in landfills, ... More>>

ALSO:


Antarctica NZ: Ice-Olation

Antarctica New Zealand is gearing up for a much reduced season on the ice this year and a very different deployment to normal! Before they head to one of the remotest places on the planet, all personnel flying south with the New Zealand programme will ... More>>

ALSO:

QV Valuations: July House Price Index Illustrates Market Resilience

According to the July 2020 QV House Price Index (HPI) results out today , property values recorded a marginal increase, up 0.2% over the month. This is somewhat of a turnaround from June, after the national index edged 0.2% lower. More>>

ALSO:

Property: Queenstown Rents Experience Biggest Drop In Seven Years

Rental prices in the Queenstown-Lakes district saw the biggest annual percentage drop in seven years after falling 28 per cent on June last year, according to the latest Trade Me Rental Price Index. Trade Me Property spokesperson Aaron Clancy said ... More>>

Seismology: The Quiet Earth

As many daily activities came to a halt during lockdown, the Earth itself became quiet, probably quieter than it has been since humans developed the technology to listen in. Seismologists have analysed datasets from more than 300 international ... More>>

RNZ: James Shaw Says Kiwibank, Not Ministers Should Decide On Investors

Climate Change Minister James Shaw says Kiwibank's decision to stop doing business with companies dealing in fossil fuels is the right one. More>>

ALSO:

FMA: Kiwis Confident Financial Markets Will Recover From COVID-19, Plan To Increase Investments

Despite the majority (60%) of investors experiencing losses as a result of COVID-19, the outlook on investing remains positive, according to a Financial Markets Authority (FMA) survey. Most Kiwis (71%) were optimistic that the pandemic will pass eventually ... More>>

FIRST Union: Warehouse Using Covid For Cover As Extensive Restructure Makes Everyone Worse Off

(FIRST Union comments on The Warehouse consultation and proposed restructure) 'Unfortunately the Warehouse have done the disappointing thing and used Covid-19 to justify a bunch of operational business decisions that will leave hundreds of workers without jobs ... More>>

ALSO: