Seawater Melting Massive Thwaites Glacier in Antarctica - Alarming Sign of Climate Change, Scientists Say
ICARO Media Group
In a potentially alarming development, a team of scientists has discovered that seawater flowing underneath and into gaps in the Thwaites Glacier in Antarctica is contributing to the melting of this massive ice formation. This finding raises concerns about the impending effects of human-driven climate change and the potential for more rapid sea-level rise worldwide.
The Thwaites Glacier, known as the "Doomsday Glacier," is currently undergoing "vigorous melting" due to warm ocean water caused by climate change. If left unchecked, this phenomenon could have catastrophic consequences for coastal communities across the globe, warn researchers.
Christine Dow, a professor at the University of Waterloo in Canada and co-author of the study, expressed concern that the rate of glacier deterioration may be underestimated, further emphasizing the need for urgent action. "The worry is that we are underestimating the speed that the glacier is changing, which would be devastating for coastal communities around the world," Dow stated in a press release.
The Thwaites Glacier, approximately 80 miles across and comparable in size to Florida, loses around 50 billion tons of ice each year, contributing to roughly 4% of global sea-level rise. The International Thwaites Glacier Collaboration estimates that the complete loss of Thwaites could cause a surge in average global sea levels by more than two feet, with even more severe impacts in some areas of the United States.
To gain a deeper understanding of the situation beneath the surface of the glacier, glaciologists used radar data collected by Finland's ICEYE commercial satellite program between March and June of last year. They discovered that seawater flows both into and away from the glacier with the tides, mixing with freshwater. However, some of the warm ocean water also travels deep beneath the ice formation, either through natural conduits or by getting trapped in cavities.
Professor Eric Rignot from UC Irvine, the lead author of the study, mentioned that there are areas where the seawater is almost at the pressure of the overlying ice. Just a little more pressure could cause the water to push up the ice, resulting in a column of ice more than half a mile high. The presence of salty seawater with a lower freezing point than freshwater further intensifies the melting of the glacier.
While this research sheds light on the dangerous dynamics at play, there is a need for further investigation to fully comprehend the impact of warm water beneath these significant ice formations. Scientists emphasize the importance of ice sheet modeling to develop a more accurate timeline of expected sea-level rise, enabling better adaptation measures. Simultaneously, they emphasize the urgency of reducing carbon emissions to prevent the worst-case scenario.
As our planet continues to face the consequences of climate change, actions must be taken to address the accelerating deterioration of glaciers like Thwaites. The findings of this study serve as a stark reminder of the need for global cooperation and immediate efforts to mitigate climate change's devastating effects on our planet and its communities.