How many debris glaciers lie? Researchers analyze mountain glaciers analyze Google Earth Engine – ScienceDaily


The warming of the Earth causes the glacier of the mountain, and their magnitude is a decline in global decades. At the same time, many glaciers cover is rare. However, the coverage of these debris rarely recorded. Geosciences GFZ Research and Research Center, two German colleagues from Switzerland – one of them employed by Google – now shows that the glacier glaciers of global and glaciers glaciers can be detected through satellite monitoring.

During their work, scientists used the Cloud Computing platform "Google Earth Engine". This is the Internet development environment and a satellite network database that is available for a period of up to forty years, available for researchers. Images in the study journal Geophysical research letters Came from LASATAT-8 and Senieller 2 and 30 to 30 and 10 spatial resolution on 10 miles per pixel. Scientists are comparable to space electronic glacier catalog, Randolph glacier inventory, to determine the debris coverage. To do this, they created an automated method that creates a pixel-by-pixel comparison around the world. "Our approach, in principle, allows quick maps of waste emissions changes for any period of time, for which satellite imagery is available," says Dirk Scherler.

The manual review demonstrated strong results. Consequently, 4.4 percent of the glacier surface of the glacier is covered with ruins (the Greenland ice sheet and Antarctic research are not included). Distribution is uneven: the poles will be reduced to the poles, because the landscape is quite brilliant here. In steep mountainous regions, such as the Himalayan Islands, are more ruins than the glacier. Moreover, research has shown that the coverage ratio is higher for the glacier than the larger ones. With the reduction of global glaciers, the percentage increase in waste processing is expected to increase, which is more important to monitor the debris coverage.

Mountain glaciers are of great importance for the regions where their fresh water flows: it serves drinking water, attracts agricultural territories or turbines. In the opinion of the authors, the results of the research will provide the basis for future modeling of ice balances, global scale of regional scale.

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Materials provided GFZ GeoForschungsZentrum Potsdam, Helmolt Center. Note: Edit content for style and length.

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