Antarctic exploration has entered a “new era” after a submarine made a remote-controlled dive beneath an ice shelf to study the Earth’s melting poles.
The uncrewed Swedish craft brought back map readings from underneath the ice in what polar oceanographer Anna Wahlin likened to “seeing the back of the Moon”.
The submarine failed to return from its final dive in January, leaving scientists wondering whether curious seals were to blame for its demise.
Nonetheless, its findings shed new light on the melting of Antarctic ice, which could fuel a catastrophic rise in sea levels.
One Antarctic landmark is known as the Doomsday Glacier because sea levels would rise by more than half a metre if it melted due to climate change.
A warming ocean is the obvious culprit but the University of Gothenburg craft found “dramatic and distinct features” under the ice that may help predict the rate of melting.
“It’s a little bit like being able to look into a black box,” Prof Wahlin, who led the expedition from on board an icebreaker, told The National.
“We have, for a long time, had tools that allow us to observe what goes into ice shelf cavities, and what comes out. Based on that data we have created models.
“Now, when we can see what it actually looks like, we can see that it’s very diverse. The melting can be very, very local. That part of the melting is a new process that we don’t yet have in our models.”
Polar explorer
The battery-powered submarine, known as Ran, was programmed to dive as far as 17km into a cavity of the Dotson ice shelf, in western Antarctica.
Scientists accompanied it on a Korean icebreaker called RV/IB Araon, before lowering it into the water for what could be 24 hours at a time.
Once it dived under the Antarctic ice shelf, which can be hundreds of metres thick, its acoustic sensors went dark.
It had no contact with its owners as it set about scanning the base of the ice shelf and measuring the ocean currents and temperature.
In a 27-day expedition, it travelled more than 1,000km back and forth under the ice shelf.
Once it resurfaced, Ran would return to a designated point where the icebreaker would pick it up.
If it came up early it was programmed to send a satellite signal so scientists could come and collect it.
Disappearance
During a repeat dive in January, the submarine was reported missing after it failed to arrive at its rendezvous point.
A helicopter and drone search failed to locate the bright orange craft, its batteries by now long dead.
Scientists have two theories on Ran’s fate. One is that the ice shelf could have changed so much since an earlier dive that the craft’s programmed path led it into danger.
Or were animals to blame? There were Antarctic seals in the area. The crew noticed there were more of them than usual.
A herd of curious seals could have encircled the craft. It might have gone into emergency mode and never found its way back.
Unless it is found, we may never know.
It will take a couple of years to replace Ran, for which a science foundation had paid $3.8 million, but Prof Wahlin believes that “this will be the beginning of a new era” of Antarctic discovery.
“This was, in a way, a proof of concept,” she said. “We can see what we can do.”
Discoveries
In the meantime, oceanographers have plenty to pore over from Ran’s findings and its images of teardrop-shaped dents in the ice shelf.
They can start to fill what a new paper based on the expedition calls the “knowledge gaps” about the ice shelf so critical to the future of the planet.
The collapse of Antarctic ice is what climate scientists call a tipping point, an event that cannot be reversed even if temperatures one day fall.
Scientists predicting the melting of the ice sheet must now take into account the “wealth of processes” known to be occurring under the ice, the study says.
Prof Wahlin, who had expected the glacier to look as smooth from below as from above, said she was “still a little bit mind-blown” by what the submarine found.
“I’m hoping, really, that this will give rise to many new studies, in particular models in areas where you don’t have so much melt,” she said.
Existing models “tell us that, obviously, the warmer the water is, the more it melts, and also a little bit faster the water flows, the more it melts.
“There’s this whole other part of the ice shelf with smaller melt and we don’t seem to get that right presently.”
The article Swirls and scoops: Ice-base melt revealed by multibeam imagery of an Antarctic ice shelf, by Anna Wahlin et al, is published in the journal Science Advances.
Some of Darwish's last words
"They see their tomorrows slipping out of their reach. And though it seems to them that everything outside this reality is heaven, yet they do not want to go to that heaven. They stay, because they are afflicted with hope." - Mahmoud Darwish, to attendees of the Palestine Festival of Literature, 2008
His life in brief: Born in a village near Galilee, he lived in exile for most of his life and started writing poetry after high school. He was arrested several times by Israel for what were deemed to be inciteful poems. Most of his work focused on the love and yearning for his homeland, and he was regarded the Palestinian poet of resistance. Over the course of his life, he published more than 30 poetry collections and books of prose, with his work translated into more than 20 languages. Many of his poems were set to music by Arab composers, most significantly Marcel Khalife. Darwish died on August 9, 2008 after undergoing heart surgery in the United States. He was later buried in Ramallah where a shrine was erected in his honour.
Representing%20UAE%20overseas
%3Cp%3E%0DIf%20Catherine%20Richards%20debuts%20for%20Wales%20in%20the%20Six%20Nations%2C%20she%20will%20be%20the%20latest%20to%20have%20made%20it%20from%20the%20UAE%20to%20the%20top%20tier%20of%20the%20international%20game%20in%20the%20oval%20ball%20codes.%0D%3Cbr%3E%20%0D%3Cbr%3E%3Cstrong%3ESeren%20Gough-Walters%20(Wales%20rugby%20league)%3C%2Fstrong%3E%0D%3Cbr%3EBorn%20in%20Dubai%2C%20raised%20in%20Sharjah%2C%20and%20once%20an%20immigration%20officer%20at%20the%20British%20Embassy%20in%20Abu%20Dhabi%2C%20she%20debuted%20for%20Wales%20in%20rugby%20league%20in%202021.%0D%3Cbr%3E%20%0D%3Cbr%3E%3Cstrong%3ESophie%20Shams%20(England%20sevens)%3C%2Fstrong%3E%0D%3Cbr%3EWith%20an%20Emirati%20father%20and%20English%20mother%2C%20Shams%20excelled%20at%20rugby%20at%20school%20in%20Dubai%2C%20and%20went%20on%20to%20represent%20England%20on%20the%20sevens%20circuit.%20%0D%3Cbr%3E%20%0D%3Cbr%3E%3Cstrong%3EFiona%20Reidy%20(Ireland)%3C%2Fstrong%3E%0D%3Cbr%3EMade%20her%20Test%20rugby%20bow%20for%20Ireland%20against%20England%20in%202015%2C%20having%20played%20for%20four%20years%20in%20the%20capital%20with%20Abu%20Dhabi%20Harlequins%20previously.%0D%3C%2Fp%3E%0A
Analysis
Members of Syria's Alawite minority community face threat in their heartland after one of the deadliest days in country’s recent history. Read more
Test
Director: S Sashikanth
Cast: Nayanthara, Siddharth, Meera Jasmine, R Madhavan
Star rating: 2/5
Living in...
This article is part of a guide on where to live in the UAE. Our reporters will profile some of the country’s most desirable districts, provide an estimate of rental prices and introduce you to some of the residents who call each area home.
Day 2, Dubai Test: At a glance
Moment of the day Pakistan’s effort in the field had hints of shambles about it. The wheels were officially off when Wahab Riaz lost his run up and aborted the delivery four times in a row. He re-measured his run, jogged in for two practice goes. Then, when he was finally ready to go, he bailed out again. It was a total cringefest.
Stat of the day – 139.5 Yasir Shah has bowled 139.5 overs in three innings so far in this Test series. Judged by his returns, the workload has not withered him. He has 14 wickets so far, and became history’s first spinner to take five-wickets in an innings in five consecutive Tests. Not bad for someone whose fitness was in question before the series.
The verdict Stranger things have happened, but it is going to take something extraordinary for Pakistan to keep their undefeated record in Test series in the UAE in tact from this position. At least Shan Masood and Sami Aslam have made a positive start to the salvage effort.
The Greatest Royal Rumble card as it stands
50-man Royal Rumble
Universal Championship Brock Lesnar (champion) v Roman Reigns in a steel cage match
Intercontinental Championship Seth Rollins (champion) v The Miz v Finn Balor v Samoa Joe
SmackDown Tag Team Championship The Bludgeon Brothers (champions) v The Usos
Casket match The Undertaker v Chris Jericho
John Cena v Triple H
Matches to be announced
WWE World Heavyweight Championship, Raw Tag Team Championship, United States Championship and the Cruiserweight Championship are all due to be defended
Vidaamuyarchi
Director: Magizh Thirumeni
Stars: Ajith Kumar, Arjun Sarja, Trisha Krishnan, Regina Cassandra
Rating: 4/5
The specs: 2018 Jeep Compass
Price, base: Dh100,000 (estimate)
Engine: 2.4L four-cylinder
Transmission: Nine-speed automatic
Power: 184bhp at 6,400rpm
Torque: 237Nm at 3,900rpm
Fuel economy, combined: 9.4L / 100km
THE BIO
Favourite car: Koenigsegg Agera RS or Renault Trezor concept car.
Favourite book: I Am Pilgrim by Terry Hayes or Red Notice by Bill Browder.
Biggest inspiration: My husband Nik. He really got me through a lot with his positivity.
Favourite holiday destination: Being at home in Australia, as I travel all over the world for work. It’s great to just hang out with my husband and family.
The specs
Engine: 4.0-litre V8
Power: 503hp at 6,000rpm
Torque: 685Nm at 2,000rpm
Transmission: 8-speed auto
Price: from Dh850,000
On sale: now
Sly%20Cooper%20and%20the%20Thievius%20Raccoonus
%3Cp%3E%3Cstrong%3EDeveloper%3A%3C%2Fstrong%3E%20Sucker%20Punch%20Productions%3Cbr%3E%3Cstrong%3EPublisher%3A%3C%2Fstrong%3E%20Sony%20Computer%20Entertainment%3Cbr%3E%3Cstrong%3EConsole%3A%3C%2Fstrong%3E%20PlayStation%202%20to%205%3Cbr%3E%3Cstrong%3ERating%3A%3C%2Fstrong%3E%205%2F5%3C%2Fp%3E%0A
FIGHT CARD
Bantamweight Hamza Bougamza (MAR) v Jalal Al Daaja (JOR)
Catchweight 67kg Mohamed El Mesbahi (MAR) v Fouad Mesdari (ALG)
Lighweight Abdullah Mohammed Ali (UAE) v Abdelhak Amhidra (MAR)
Catchweight 73kg Mostafa Ibrahim Radi (PAL) v Yazid Chouchane (ALG)
Middleweight Yousri Belgaroui (TUN) v Badreddine Diani (MAR)
Catchweight 78kg Rashed Dawood (UAE) v Adnan Bushashy (ALG)
Middleweight Sallaheddine Dekhissi (MAR) v Abdel Emam (EGY)
Catchweight 65kg Rachid Hazoume (MAR) v Yanis Ghemmouri (ALG)
Lighweight Mohammed Yahya (UAE) v Azouz Anwar (EGY)
Catchweight 79kg Omar Hussein (PAL) v Souhil Tahiri (ALG)
Middleweight Tarek Suleiman (SYR) v Laid Zerhouni (ALG)
The%20specs%3A%20Panamera%20Turbo%20E-Hybrid
%3Cp%3E%3Cstrong%3EEngine%3A%20%3C%2Fstrong%3E4.0-litre%20twin-turbo%20V8%20hybrid%0D%3Cbr%3E%3Cstrong%3EPower%3A%20%3C%2Fstrong%3E680hp%0D%3Cbr%3E%3Cstrong%3ETorque%3A%20%3C%2Fstrong%3E930Nm%0D%3Cbr%3E%3Cstrong%3ETransmission%3A%20%3C%2Fstrong%3EEight-speed%20dual-clutch%20auto%0D%3Cbr%3E%3Cstrong%3EPrice%3A%20%3C%2Fstrong%3EFrom%20Dh749%2C000%0D%3Cbr%3E%3Cstrong%3EOn%20sale%3A%20%3C%2Fstrong%3ENow%3C%2Fp%3E%0A
The%20specs%3A%202024%20Panamera
%3Cp%3E%3Cstrong%3EEngine%3A%20%3C%2Fstrong%3E2.9-litre%20twin-turbo%20V6%0D%3Cbr%3E%3Cstrong%3EPower%3A%20%3C%2Fstrong%3E353hp%0D%3Cbr%3E%3Cstrong%3ETorque%3A%20%3C%2Fstrong%3E500Nm%0D%3Cbr%3E%3Cstrong%3ETransmission%3A%20%3C%2Fstrong%3EEight-speed%20dual-clutch%20auto%0D%3Cbr%3E%3Cstrong%3EPrice%3A%20%3C%2Fstrong%3EFrom%20Dh408%2C200%0D%3Cbr%3E%3Cstrong%3EOn%20sale%3A%3C%2Fstrong%3E%20Now%3C%2Fp%3E%0A
Company%20Profile
%3Cp%3E%3Cstrong%3ECompany%20name%3A%20%3C%2Fstrong%3ENamara%0D%3Cbr%3E%3Cstrong%3EStarted%3A%20%3C%2Fstrong%3EJune%202022%0D%3Cbr%3E%3Cstrong%3EFounder%3A%20%3C%2Fstrong%3EMohammed%20Alnamara%0D%3Cbr%3E%3Cstrong%3EBased%3A%20%3C%2Fstrong%3EDubai%20%0D%3Cbr%3E%3Cstrong%3ESector%3A%20%3C%2Fstrong%3EMicrofinance%0D%3Cbr%3E%3Cstrong%3ECurrent%20number%20of%20staff%3A%20%3C%2Fstrong%3E16%0D%3Cbr%3E%3Cstrong%3EInvestment%20stage%3A%20%3C%2Fstrong%3ESeries%20A%0D%3Cbr%3E%3Cstrong%3EInvestors%3A%20%3C%2Fstrong%3EFamily%20offices%0D%3Cbr%3E%3C%2Fp%3E%0A
GIANT REVIEW
Starring: Amir El-Masry, Pierce Brosnan
Director: Athale
Rating: 4/5
UAE currency: the story behind the money in your pockets
