火山喷发物理作用——火山地质学前沿课题

PHYSICAL PROCESS OF VOLCANIC ERUPTION——FRONTIER SUBJECT OF VOLCANOLOGY

本文较系统地介绍了火山喷发物理作用这一前沿课题的概念、含义、研究内容与意义.分别列出专题讨论了岩浆在地下形成后上升的几种物理机制及判别标志、岩浆房内物理作用与火山喷发机制的关系;自岩浆房上升至地表途中由于挥发份及通道形状等作用导致的喷发压力、喷出速度与喷发高度的变化等内容.

This paper introduces the conception and significance of physical processes of a volcanic eruption. Some aspects of such an eruption are discussed respectively as follows; (l)the physical processes of a rising magma body and its distinguishing features after formation; (2)the relationships between physical processes in the magma chamber and eruption mechanism; (3)the change of vent pressure, velocity and height of eruption related to volatile content and conduit geometry.