All-weather avalanche activity monitoring from space?

作者: Christine Pielmeier , Regula Frauenfelder , Andreas Wiesmann , Christian Jaedicke , Rafael Caduff

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摘要: Information on avalanche activity or non-activity local and regional scale is of great value for warning services, traffic authorities experts responsible safety in communities ski resorts. In particular during bad weather condition, such information available only very limited not at all. The aim the ESA IAP feasibility study "Improved Alpine Avalanche Forecast Service" was to investigate existing technology overcome this gap. Of interest were radar-based techniques that have potential operate independently daylight conditions. For testing observation a scale, terrestrial radar installed WSL Institute Snow Research SLF, illuminating Dorfberg close Davos, Switzerland winter 2013/2014. On slope, frequent natural as well artificially triggered avalanches can be expected. system acquired datasets minute temporal resolution, which allows production coherence maps detect events also features snow creep free-riders tracks. spatial coverage 6 km 2 experiment. data from satellites with high resolution (< 3 m) analyzed. A TerraSAR-X stripmap mode satellite frame, example, covers 1500 has 11 days. combination space-borne sensors could powerful tool map different scales any condition. We present first results mapping Davos 2013/2014 discuss capabilities limitations services.

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