Iceberg
Pictured is A-68(a) one of the largest ever recorded icebergs floating near the island of South Georgia, South Atlantic. Iceberg A-68(a) is the largest section of A68 an iceberg which calved from the Larsen C Ice Shelf on the Antarctic Peninsula in July 2017. Unlike other large icebergs, A68a is considered unusually ‘thin’, with its submerged depth presumed to be no more than 200 metres. This means it has the potential to drift near South Georgia’s coast prior to any grounding. It has already entered the 1.24million km2 Marine Protected Area which surrounds South Georgia and the South Sandwich Islands, sparking concerns regarding the threat it could pose to the wildlife. Ice debris has already started to break away, caused by A68a drifting through warmer waters near the South Orkney islands. To aide with the collation of information, an RAF ATLAS based at RAF Mount Pleasant is to provide reconnaissance of the iceberg, providing a closer look at a level not always achievable through satellite imagery. The sorties aim to gather data in the form of imagery stills, video footage and observations from the crew, focussing on any obvious large fissures or potential fault lines along the edge and middle of the iceberg.

Polarstern had taken action to enter the district between the iceberg that split away from the Antarctic Ice Sheet in a cycle called ‘calving’ and the Brunt Ice Shelf. Between the iceberg (A74) assessing 490 square miles, generally the size of UK’s Bedfordshire county, polarsterns were bewildered to discover the verdure, and the rich biodiversity protected on the seafloor. The revelations and first photos of the marine life under the A74 was released by Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research (AWI). the research vessel gathered the leftovers tests for more unequivocal pieces of information into the ecosystem.

According to the AWI, the gigantic iceberg named A74 calved from the Brunt Ice Shelf in the Antarctic on 26 February 2021, the clarification was not climate change. Researchers, regardless, have been focusing on the nutrient content and ocean current of A74 in the broad space of 1270 square kilometers.

[Numerous small sponges, bryozoans and corals encrust the stones scattered across the seafloor. credit: AWI]

“Germany’s research icebreaker Polarstern is the primary research vessel on the spot, and has won with respect to invading the opening between the iceberg and the shelf edge, to explore the seafloor that has been covered by many meters of ice for a significant long time,” the association instructed. Experts from Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research (AWI) and their worldwide partners displayed at the calving site to take very rarely photographs of the as of late concealed biodiversity.

[Life on Antactic seafloor, where giant iceberg A74 calved from Brunt ice shelf (eastern Weddell Sea). Credit: AWI]

With the tremendous iceberg cutting off, the opening engaged the researchers to explore the including area.”It is an extraordinary possibility introduced to researchers on board Polarstern to examine the Antarctic Ice Sheet. Gathering of the Polarstern took on the connected hardships and moreover risks,” German Federal Research Minister Anja Karliczek said, underlining the meaning of the mission. Photos show 10cm sea anemone associated with a stone on the seafloor, which feed on shrimp and little fishes. Researchers found twisty tendrils of a brittlestar starfish, a pink sea worm and a couple of various rocks, corals and sponges. Somewhere near 5 kinds of fishes and squids were also found by the voyagers. The district was found close to southeast Weddell Sea. Researchers are moreover recording simple data on temperature, salinity, and ocean current orientation and rates to choose the impacts of climate change.

LEAVE A REPLY

Please enter your comment!
Please enter your name here