Science, Space and Technology News 2024
Petermann Glacier drains about 4 percent of the Greenland Ice Sheet as it moves inexorably toward the Arctic Ocean. A new observation and modeling study shows that the glacier is more vulnerable than previously thought to the intrusion of warm ocean water on its underside, leading to accelerated melting and boosting the potential severity of future sea level rise.
“For a long time, we thought of the transition boundary between ice and ocean to be sharp, but it’s not, and in fact it diffuses over a very wide zone, the ‘grounding zone,’ which is several kilometers wide,” said Rignot, who is also a senior research scientist at NASA. “Seawater rises and falls with changes in oceanic tides in that zone and melts grounded ice from below vigorously.”
According to the study, the elongated shape of the grounding zone cavity is a major contributor to accelerated ice melting. In a run of the numerical model taking into account just warmer ocean temperature, the team found thinning of about 40 meters. In a second modeling exercise, an increase in the grounding zone cavity from 2 to 6 kilometers was included, and in that case, ice thinning grew to 140 meters.
United States Latest News, United States Headlines
Similar News:You can also read news stories similar to this one that we have collected from other news sources.
Palworld Technology List: All Items Unlocked With Technology PointsThe amount of unlockable tech in Palworld can get overwhelming, so here's a full list to help you decide how to spend those points.
Read more »
Human-to-humanoid robot full-body teleoperation unlocked in real-timeResearchers unveil live reinforcement learning-based whole-body humanoid teleoperation system, promising significant advancements.
Read more »
Suspect wanted after stealing unlocked vehicle with gun left inside, police sayPhiladelphia police are searching for a suspect who stole a car with a gun left inside on Tuesday.
Read more »
NYC to receive over $100M in remaining migrant funds unlocked by feds: Sen. SchumerNew York City is due to finally receive the remaining $106 million in migrant crisis reimbursements allocated by the federal government after submitting
Read more »
A Startup Has Unlocked a Way to Make Cheap InsulinHouston-based rBIO has invented a new process to churn out insulin at higher yields using custom-made bacteria.
Read more »
I had written off bicycles, until e-bikes unlocked an entire world for meE-bikes weren't even on my radar until the Himiway C5 came along and turned me into an e-bike enthusiast over the course of my very first ride.
Read more »