The motion of non-basal dislocations in ice crystals

摘要: Abstract The dislocation structure in ice crystals has been extensively studied using etching techniques. There is a general consensus regarding the motion and of basal dislocations. opposite true concerning non-basal This paper presents experimental evidence dislocations ice, as revealed by replicating. Two distinct etch patterns caused emerged on plane were observed. One series separated flat-bottomed pits, corresponding to jumping edge other uniform zigzag channels, cross-slip screw prismatic or pyramidal planes. Special attention paid 〈11 23〉 which can contribute plastic deformation along c axis. An important consequence intersection mechanism proposed this that, while singl...