One of world's largest icebergs drifting beyond Antarctic waters after it was grounded for 3 decades
London, Nov 25: One of the world's largest icebergs is drifting beyond Antarctic waters, after being grounded for more than three decades, according to the British Antarctic Survey.
The iceberg, known as A23a, split from the Antarctic's Filchner Ice Shelf in 1986. But it became stuck to the ocean floor and had remained for many years in the Weddell Sea.
The iceberg is about three times the size of New York City and more than twice the size of Greater London, measuring around 4,000 square kilometres (1,500 square miles).
Andrew Fleming, a remote sensing expert from the British Antarctic Survey, told the BBC on Friday that the iceberg has been drifting for the past year and now appears to be picking up speed and moving past the northern tip of the Antarctic Peninsula, helped by wind and ocean currents.
"I asked a couple of colleagues about this, wondering if there was any possible change in shelf water temperatures that might have provoked it, but the consensus is the time had just come," Fleming told the BBC.
"It was grounded since 1986, but eventually it was going to decrease (in size) sufficiently was to lose grip and start moving," he added.
Fleming said he first spotted movement from the iceberg in 2020. The British Antarctic Survey said it has now ungrounded and is moving along ocean currents to sub-Antarctic South Georgia.
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Bengaluru jail introduces biometric tracking system for prisoners
Bengaluru: In a bid to curb misconduct and illegal activities inside Parappana Agrahara Central Prison, prison authorities have introduced a new ‘Prisoners Tracking Movement System’ under which inmates will have to undergo biometric verification while entering every barrack.
According to jail officials, biometric systems have been installed across all major sections of the prison, including barracks, visitor rooms, hospital, canteen, kitchen, library, playground, handicraft units and bakery sections. Staff members have also been deployed at these locations.
Officials said inmates visiting the visitors’ room must now obtain a digital token after biometric verification. Details such as the prisoner’s name, identification number and entry time will be updated in the prison software system. This will help authorities maintain a complete digital record of inmates visiting and returning from meeting rooms.
Similar systems have also been introduced at entry points of the hospital, library and other barracks accessed for work-related purposes. Officials said the system will help identify prisoners involved in suspicious or illegal activities with other inmates and enable authorities to track how much time a prisoner spends at different locations inside the prison.
Authorities stated that AI-powered cameras were already being used inside the prison to monitor inmates as well as prison staff. Along with this, digital tracking of prisoner phone calls and a digital token system for visitor meetings have now been added to strengthen surveillance over inmate movement. Officials said the project has been implemented at a cost of around Rs 2.25 crore.
The prison department has also introduced a canteen usage tracking system to monitor prisoners’ spending patterns. Instead of direct cash payments, inmates can purchase bakery items and snacks using wallets or coupons issued within the prison system.
Officials said the digital system will record details including the buyer’s name, items purchased, quantity, date, time and remaining wallet balance. This will allow prison authorities to maintain complete expenditure records of inmates.
