TY - DATA ID - miotke1979twav T1 - Tab 1-4 Weight and volume reduction as well as surface subsidence during abrasion experiments AU - Miotke, Franz-Dieter PY - 1979 T2 - Supplement to: Miotke, F-D (1979): Die Formung und Formungsgeschwindigkeit von Windkantern in Victoria-Land, Antarktis. Polarforschung, 49(1), 30-43, hdl:10013/epic.29469.d001 PB - PANGAEA DO - 10.1594/PANGAEA.754387 UR - https://doi.org/10.1594/PANGAEA.754387 N2 - Antarctic land surfaces in South Victoria Land, all without a covering of vegetation, are actively formed by winds which often reach velocities of more than 100 km/h. Consequently, deflation and abrasion are essential factors in the process of slope formation. Water erosion, active only during the very short summer period, is limited to a few localities in South Victoria Land. Experiments in a wind tunnel proved that ventifacts in the Dry Valleys can be formed within a few decades or at the most, a few centuries. Yearly corrasion rates average around a maximum of a few millimeters. Considerable variability is caused by the different exposures of ventifacts within the micro relief end the varying resistance of the rocks. The importance of ice crystals (snow) for abrasion processes should not be overestimated. ER -