Our cover picture ...
... shows part of the strewn field of the Chelyabinsk meteorite fall. The path of the meteoroid is shown in yellow. The thickened sections mark the positions of the flares, in the section shown the 4th and 5th flare with the accompanying fragmentation. The strewn field map was created by Svend Buhl from 233 find locations, 181 of them with mass data. Independently, Karl Wimmer determined the path of the meteoroid in the Earth's atmosphere and the positions of the explosions, and calculated the location of the strewn field with a strewn field model that also includes the upper level wind data. The model calculations of the strewn field and the positions of the recovered meteorites agree remarkably well. The meteorites found and reported in this area are shown as red dots and clearly show the drift of the material caused by the upper level winds.
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