(The Canadian Press)

Collapse of Nunavut ice shelf ‘like losing a good friend:’ glaciologist

The ice shelf on the northwestern edge of Ellesmere Island has shrunk 43 per cent

A team of scientists placed research instruments into the Milne Ice Shelf in Nunavut last July, with plans to return to collect them this summer and study how the stability of the structure had changed.

The COVID-19 pandemic put that trip on hold. Then a week ago, the last remaining intact ice shelf in the Canadian arctic broke apart.

“And so we’ve lost not only the equipment, which is now drifting away in the Arctic Ocean, but also the information that it recorded over the time that it was out,” Carleton University glaciologist Derek Mueller said Friday.

The Canadian Ice Service said the ice shelf on the northwestern edge of Ellesmere Island has shrunk 43 per cent to 106 square kilometres from 187 square kilometres.

The calving event, captured by satellite, was not a surprise, Mueller said.

The ice shelf sits in a fjord sheltered by tall cliffs, so it had not melted as quickly as others.

While it managed to stay together until last week, Mueller said he had observed worsening cracks and rifts since he first started studying the area in 2004.

“It certainly has been changing — there’s no doubt. And, to me, it wasn’t really a question of if this breakup would happen. It was a question of when it would happen,” Mueller said.

“But still it hits home. It’s sort of like losing a good friend in a way.”

The ice shelf collapse also set adrift research into marine organisms, such as sponges and sea anemones, discovered in water pockets within the ice.

“We’re not sure what these consequences are for these animals. And certainly they won’t be where we were studying them, because that piece has drifted away from the shore,” Mueller said.

“If we find these kinds of animals again, I think it will be a stroke of luck.”

At the turn of the 20th century, 8,600 square kilometres of ice stretched along the northern coast of Ellesmere Island. By 2000, it was reduced to 1,000 and now it’s half that, Mueller said.

University of Ottawa glaciologist Luke Copland said in a news release that the temperature has been up to 5 C warmer this summer than the average between 1981 and 2010.

The region has been warming at two to three times the global rate, he added.

“This drastic decline in ice shelves is clearly related to climate change,” Copland said.

“The Milne and other ice shelves in Canada are simply not viable any longer and will disappear in the coming decades.”

Mueller said the ice shelf collapse should be a wake-up call.

“These ice shelves are well out of balance with the climate and I think their demise is inevitable,” he said.

“But, having said that, it’s not too late to make changes to the way we live and our carbon footprint.”

Lauren Krugel, The Canadian Press

Like us on Facebook and follow us on Twitter.

Want to support local journalism? Make a donation here.

Climate change

Get local stories you won't find anywhere else right to your inbox.
Sign up here

Just Posted

Comox Valley protesters send message over old-growth logging

Event at Sid Williams Plaza was part of province-wide event on Friday

Buy a Valley Vonka bar, support a good Comox Valley cause

All proceeds go to support YANA, and you might even win a golden ticket

One person dead in two-vehicle accident near Courtenay

Highway 19A was closed for several hours following the crash

Long-term care need pressuring acute care in Comox Valley, Strathcona

Region could use a couple of large facilities for seniors on the north part of the Island

Regional roundtable tackles Comox Valley air quality

Group includes a range of government and community members

3 new deaths due to COVID-19 in B.C., 139 new cases

B.C. confirms 40 ‘historic cases,’ as well

Courtenay event protesting old-growth logging part of a province-wide rally

Similar rallies in communities throughout B.C. on Sept. 18

Comox Valley Beefs & Bouquets, week of Sept. 15

Beef to the gnome thief; bouquet to dental hygienists

Supreme Court Justice Ruth Bader Ginsburg dies at 87

The court’s second female justice, died Friday at her home in Washington

Comox Valley protesters send message over old-growth logging

Event in downtown Courtenay was part of wider event on Friday

Application deadline for fish harvester benefits program extended

Those financially impacted by the pandemic have until Oct. 5 to apply

Is it time to start thinking about greener ways to package cannabis?

Packaging suppliers are still figuring eco-friendly and affordable packaging options that fit the mandates of Cannabis Regulations

Emaciated grizzly found dead on central B.C. coast as low salmon count sparks concern

Grizzly was found on Gwa’sala-‘Nakwaxda’xw territory in Smith Inlet, 60K north of Port Hardy

Most Read