Scientists Discover Massive Recent Slowdown in Melting of Antarctica ‘Doomsday’ Glacier
BY CHRIS MORRISON 16 OCTOBER 2022 9:00 AM
Forget coral reefs and polar bears – they are so yesterday’s climate scare stories. The real big one, the tipping point du jour, is the collapse of the West Antarctica ice shelf and the prospect of global flooding on a biblical scale last reported in the times of Noah. It’s in rapid retreat says every scaremonger from Sir David Attenborough to the BBC’s resident green activist Justin Rowlatt. It is in retreat – a natural process as the Earth slowly moves out of an ice age. But now, new scientific work has found the process at the huge Thwaites Glacier in Antarctica – nicknamed the ‘Doomsday Glacier‘ for the supposed approaching catastrophe of its swift demise – is much slower than in the recent past.
The Thwaites Glacier has long been of interest. It is the second largest ice stream in West Antarctica and occupies an area the size of Florida. A group of oceanographers, led by Dr. Alastair Graham of the University of South Florida, has mapped part of the floor once occupied by the glacier, and discovered it was retreating at twice the rate in the past than that now indicated by the satellite measurements made between 2011-2019. The earlier rate of retreat was said to be “exceptionally fast”. Work is in progress to establish when that fast retreat occurred, but it is almost certain it pre-dates the 1950s, could be about 180 years old, and possibly dates back several centuries. What is completely clear, however, given the timing, is that human-caused climate change was not a factor in the faster retreat.
The results were obtained by using autonomous submersibles to map an area of the sea floor where markings were discovered representing the retreating glacier. Mapping 13 square kilometres, the researchers found a series of ridges caused by the moving glacier hitting the sea floor as it rose and fell with the tides. It was found that during the daily tidal cycle, the glacier retreated around 6-7 metres a day, although sometimes reaching 10m. Over about five months of data, the glacier retreated 2.1 kms a year, twice the current rate measured by the satellites
https://dailysceptic.org/2022/10/16/scientists-discover-massive-recent-slowdown-in-melting-of-antarctica-doomsday-glacier/
