10.1594/PANGAEA.754387
Miotke, Franz-Dieter
Franz-Dieter
Miotke
Tab 1-4 Weight and volume reduction as well as surface subsidence during abrasion experiments
PANGAEA
1979
Table
Rock type
Time in minutes
Loss
Wind tunnel experiment
Calculated
en
Supplementary Dataset
10013/epic.29469.d001
210 data points
text/tab-separated-values
Creative Commons Attribution 3.0 Unported
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.
Supplement to: Miotke, Franz-Dieter (1979): Die Formung und Formungsgeschwindigkeit von Windkantern in Victoria-Land, Antarktis. Polarforschung, 49(1), 30-43