English: :The Antarctic meteorites have been concentrated in certain location, but the mechanism of concentration is not completely understood. A leading hypothesis is that the meteorites fell on snowfields where ice thickness increases, flowed toward the edge of the Antarctic Continent, and became exposed where the iceflow is impeded by obstacles and where the ice is ablated.

The wind continually ablates the ice surface in the areas of meteorite concentration, removing ice by sublimation and mechanical abrasion. In order to measure the amount of ablation, a series of stakes has been emplaced and accurately surveyed with respect to a base station on rock outcrops. Ablation rates have been as high as 10 centimeters per year.

(From File:Icemvmt.png)