Birth, growth and decay of glaciers

Mass balance studies are labour-intensive operations that involve drilling holes with hot-water drills as here on Arteson Raju, Cordillera Blanca, Peru. Wooden, metal or plastic stakes are inserted into the holes, and the distance from the top to the ice or snow surface is measured at the beginning and end of the ablation season. MH

« Previous  ·  Back to the thumbnails  ·  Next »