2023-05-09 23:47:06
Weather of Arabia – Scientists reported, on Monday, that a large glacier in northwest Greenland interacts with the tides in the ocean, which leads to melting that was not known before and a faster rise in sea level, according to a study published by a group of glaciers from the University of California and a laboratory. NASA’s Jet Propulsion in Proceedings of the National Academy of Sciences, Monday.
Observations from the Petermann Glacier revealed that the glacier’s seam – the area where the ice sheet begins to connect with the ocean – can change dramatically with the entry of tides each day.
CNN says the traditional view among scientists is that the ground line does not move with the tides, but the new discovery shows another major source of melt that could speed up estimates of sea level rise.
Between 2016 and 2022, warmer tidal cycles melted a 670-foot-high hole in the glacier’s lower side, and this phenomenon could worsen in the coming years and decades as ocean temperatures rise.
CNN recently reported that sea surface temperatures were at their highest levels on record this spring, a rise that scientists have worried may be part of a dangerous new trend.
The study raises further concerns about the already alarming prospect of sea level rise, which threatens coastlines around the world.
Melting ice in Greenland is the biggest contributor to sea level rise, according to NASA. Although predictions have accelerated in recent years, current projections do not take into account this newly discovered contribution of subglacial interactions with tidal warming.
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