67 days ago

Sinking coastlines mean parts of Christchurch will feel impact of sea-level rise earlier than expected

Nicole Mathewson Reporter from The Press

From reporter Tina Law:
Parts of Christchurch will feel the impacts of sea-level rise earlier than expected because the land is sinking, according to new data.

Large areas from Woodend to Lake Ellesmere, including Banks Peninsula, are subsiding up to three millimetres per year, which means an extra 30 centimetres of sea-level rise over the next 100 years.

The data has come from NZ SeaRise, a five-year research programme funded by the Government involving 30 local and international experts.

It has taken into account the natural rises and falls of the country’s coastline, as well as climate change and warming temperatures to project sea level rises.

Using a www.searise.nz... |new online tool|, New Zealanders will for the first time be able to see how much and how fast sea levels will rise along their own stretch of coast and in their neighbourhood.

Programme co-leader Professor Tim Naish​, of Victoria University of Wellington, said 20 years ago it was thought sea-level rise was like pouring water into a bathtub – if you put more water in, it rises uniformly around the world, but Naish said it is actually much more complicated.

Sea levels are expected to rise at different rates across New Zealand and even at different levels across Canterbury’s coastline.

The largest increases in sea levels are expected to occur along the southeast of the North Island along the Wairarapa Coast.

Programme co-leader Dr Richard Levy, of GNS Science and Victoria University of Wellington, said subsidence rates along that coast were high, and sea levels could rise by well over 1.5 metres by 2100 if the least optimistic climate change scenario was followed.

Based on current international emissions reduction policies, global sea levels are expected to rise by about 60cm by 2100, but for large parts of New Zealand this could double to about 1.2m due to ongoing land subsidence, Naish said.

“We have less time to act than we thought.”

According to the data, Akaroa on Banks Peninsula would see 30cm of sea-level rise by 2040, instead of 2060. The coastline in the area is sinking by 3mm a year.

“Thirty centimetres of sea-level rise means the one in 50-year coastal storm flood will occur annually,” Naish said.

However, some areas at the top of Lyttelton Harbour have shown a rise in the land.

Land movement data was based on median numbers taken between 2003 and 2011, and does not include the impact of the Christchurch earthquakes.

The data showed New Brighton’s coastline was sinking at 0.8mm a year, but Naish said since the earthquakes it has actually been sinking at 8mm a year, twice as fast as the global sea-level rise.

“We don’t know how long this will go on for.”

Levy said he expected councils and planners to be the primary users of the new projection information, and that the finance and insurance sectors had already been asking for the data.

Naish said the new science would give time to put in place equitable and effective adaptation measures that would limit the impact of unavoidable sea-level rise.

The Christchurch City Council has already embarked on a long process to adapt the city and Banks Peninsula to climate change.

Changes to managing new developments are being made to the district plan and the council has agreed on guidelines for adapting existing areas.

Whakaraupō Lyttelton Harbour will be the first area in Christchurch to go through climate change planning, expected to start in the spring and take 18 months.

Simon Watts, observatory director at Brighton Observatory of Environment and Economics who built his home in Southshore, said it was always better to know about things rather than be ambushed, but said the devil was always in the detail.

He said there were areas in Christchurch that rose after the earthquakes and others that sunk.

“For some areas it could be good news and others it could be bad news.

“Yes, people should be concerned because if parts of New Zealand sink by 3mm a year, that is effectively doubling the rate of sea level rise for those places."

More messages from your neighbours
16 days ago

Is your broadband bill about to increase? Don't throw money away.

NZ Compare

Spark have recently announced a price increase of $3 - $5 a month for new and existing broadband customers and other providers seem likely to follow suit.

Information collated by our research team has found that tens of thousands of Kiwis are still missing out on hundreds of dollars of savings each year on their broadband bill, because they are failing to shop around for cheaper broadband plans.

We estimate that over 500,000 households would be able to pay less for their broadband each month but many consumers are unaware of the fact that they could be making these savings and people often don’t know where to start when looking for a change in broadband plan or provider.

This is where NZ Compare can help. Our websites are simple to use and if you need more help, our friendly, Auckland based, customer support centre can advise on the most suitable broadband plan for your needs and help talk you through the switch. With unlimited fibre broadband plans available for less than $60 a month why would you pay more?

Find out more at NZ Compare or call the team on 0508 226672

CORRECTION: This post has been amended to clarify that the price of fibre and copper broadband internet services will increase, and that the increase is between $3 and $5 a month, not only $5 a month on fibre broadband plans as previously posted. (Amended at 10.31am, June 23, 2022)

17 hours ago

Toyota Aqua problem

Lynlee from Sockburn

Help - can anyone troubleshoot this issue which my daughter ( in Auckland) is having with her Toyota Aqua? Ideas gratefully received! Here's her description below.

Car Details
Toyota Aqua 2014 110kms

- An unpredictable and sudden jamming of the brakes/wheels (unsure exactly) occurs when driving at speeds of between 60-80kmh around corners.
- It never happens driving uphill or on the flat, only while driving downhill.
- It doesn't occur when I am braking, only when my foot is sitting softly on the accelerator or when I am not accelerating at all.
- I feel a rattling under the accelerator (like a feeling of gravel rattling) and the traction control light flickers on and off intermittently. I also hear a slight electrical noise.

Further Detail
- The road conditions have never been wet or slippery when this issue occurs, and the road surface has always been even tarmac. I've also been driving within the recommended speed limit for the corners.
- The car drives with no issue around the city (speeds below 50kmh). The issue only occurs when driving on the open road out of town (higher speeds).
- Passengers notice the jamming, as it jolts the car when it happens.

- I took the car to Pitstop, as I originally attributed the issue to driving on a shingle road and possibly getting a little stone stuck underneath somewhere.
- They carried out a diagnostic scan which reported that everything was normal (no damage) and no stone / gravel stuck anywhere.

- The issue occurs infrequently, so is very unpredictable. This makes it difficult for a mechanic to just take it for a drive to experience the issue and assess whats wrong.

Possible issues
- Electrical issue or fault
- Traction control
- Suspension
- Faulty wheel-speed sensors
- Tyres - size and condition

19 hours ago

First animal MRI clinic opens in Christchurch as more Kiwis willing to spend big on their pets' health

The Team Reporter from The Press

New Zealand’s first dedicated animal MRI clinic has opened in Christchurch as a growing number of Kiwis are willing to invest in their pets’ care, including one man who spent $75,000 flying his cat to Auckland to be operated on by a top animal surgeon.

Pacific Radiology has teamed up with McMaster & Heap veterinary practice in Hoon Hay to offer the service using the same technology currently used to treat human patients.

Able to scan animals less than 180 centimetres in circumference, the wide bore MRI technology can be used on household pets, farm animals and some zoo animals, including tigers.

Costing upwards of $3500, MRI is considered the gold standard of veterinary diagnostic treatment according to McMaster & Heap veterinarian Michelle McMaster, but they have not been widely used on animals.

Used to look inside a body, Magnetic Resonance Imaging utilises magnetic fields and radio waves to create a three-dimensional image, providing accurate high resolution images of an animal’s brains, spine, limbs and joints.

For the past four years McMaster has been taking pets that needed an MRI to Forté Health, but the scans had to be fitted around human patients and were often undertaken at night.

With clients prepared to spend more money on their pets, McMasters, who has been working as a vet for over 30 years, has been helping scan up to nine animals a month alongside Pacific Radiology MRI Animal Imaging Lead Gareth Leeper using Forté Health.

Christchurch pet owner Justin, who did not want his last name used, knows all too well how important having an MRI facility close at hand is after Sashenka (pictured), his 14-year-old Norwegian Forest cat, became ill in 2019.

After many tests and with no diagnosis a CT scan eventually showed Sashenka had a meningioma tumour.

Considered to be his fur daughter, Justin, whose partner is expecting their first child, had no hesitation in making an appointment and flying her to Auckland to be operated on by a top animal surgeon.

There Sashenka could get an MRI scan that would enable the surgery to take place – without it she would not have survived.

“It was critical,” Justin says.

Sashenka made a miraculous recovery from the operation but required a further five scans, two CT scans and three rounds of chemotherapy before she died two years later.

Town and Country vet Roger Bay and his team euthanise a growing number of animals at home, where the pet’s last memory is of its happy place.

Although Justin estimates he spent around $75,000 on Sashenka’s care, he has no regrets and is part of a growing number of Kiwis willing to invest in their pet’s care.

“She was my everything…my fur daughter and my best friend.”

McMaster said most pet owners that come to her clinic will try and fix “everything”.

“We very rarely put anything down.”

PD Insurance NZ chief operating officer Michelle Le Long said year-on-year they have seen growth in the pet insurance market, although she thinks the market is still under-insured with less than 25% of the estimated 1.7 companion pets not insured.

Le Long said it wasn’t unusual to have pet owners in their early 20s signing on as the value of pets have increased.

A lot of insurers covered diagnostic MRI scans, she said.