高温における火山ガラスの諸性質 : 粘性・気泡の成長

抄録

The growth of bubbles in natural glasses was investigated, and it was found that (1) The growth of bubbles increased remarkably at aprox. η = 10⁸C.G.S. (2) The velocity of the growth (U_obs) showed varying values. For example U_obs = 4.4 × 10^-6cm/sec. This value is not always in accord with Verhoogen’s. (3) The nucleation of bubbles was completed almost immediately. A decrease in number of bubbles was noted in the process of the growth due to coalesence, which is also responsible for the size distributions.