Swiss glaciers have lost half their volume in less than a century – Earth – Science and Technology


In less than a hundred years, Switzerland’s 1,400 glaciers have lost half of their total volume, while ice retreat is accelerating.

According to researchers from ETH Zurich and the Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), the volume of ice has halved from 1931 to 2016, Sky News reported.

Swiss glaciers have lost another 12 percent of their volume since 2016, scientists warn.

“Glacier retreat is accelerating. Observing this phenomenon in detail and determining its historical dimensions is important because it allows us to infer glacier responses to a changing climate,” said Daniel Farinotti, co-author of the study published in the scientific journal The Cryosphere. Swiss glaciers account for approximately half the area of ​​all glaciers in the Alps.

In the first scientific reconstruction of ice loss in Switzerland in the 20th century, scientific teams combined long-term observations of glaciers since 1931, field measurements, as well as aerial and mountain photographs. Among them were 22,000 images from individual Alpine peaks.

The expert teams then compared the gradual changes in the topography of the glaciers and calculated the evolution of the ice volume using various geodetic techniques. This allowed the researchers to create the first comprehensive study, as only a few glaciers have been studied over a long period of time, Sky News reported.


Source: Pravda – Veda a technika by vat.pravda.sk.

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