
Back In 1969, before he came to Keene State, Professor Emeritus of Geography Klaus Bayr decided to climb the Grossglockner, the highest mountain in his native Austria. He’s been back many times since, and during those visits, he became familiar with the nearby Pasterze Glacier, the largest in the eastern Alps. And during those visits, he became aware that the Pasterze was changing. “The glacier is shrinking—terribly—it’s lost a lot of mass,” Dr. Bayr observed.
The Margaritze Reservoir collects the meltwater of the glacier, and a hydroelectric power station uses that water to produce electricity. So far, the Pasterze is producing plenty of meltwater, “but if the glacier melts away, it will obviously affect power production,” Dr. Bayr observed. He has been working with the National Aeronautics and Space Administration (NASA) since the 1980s to study the glacier’s rate of recession. NASA supplies satellite data and images, and Dr. Bayr has been ground truthing that data—walking the glacier’s perimeter, with GPS in hand, to determine its exact edge. Glaciers push a lot of till in front of them: rocks, dirt, and debris. With sometimes several feet of till on top of the ice, it’s difficult to tell from satellite images just where the glacier ends. Dr. Bayr’s ground truthing supplies that essential data.
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