Pyroclastic Flow from Soufrière Hills Volcano, Montserrat: Solid Block Model  

作　　者：Irina Nikolkina Narcisse Zahibo Tatiana Talipova Efim Pelinovsky 

机构地区：[1]不详

出　　处：《International Journal of Geosciences》2011年第3期326-335,共10页地球科学国际期刊（英文）

摘　　要：The solid block model is applied to describe the motion of the pyroclastic flow under the joint action of gravity and Coulomb friction. Special attention is paid to characteristics of the pyroclastic flow generated by Montserrat volcano in likely directions. The critical friction angle of the flow propagation is evaluated empirically. Characteristic parameters of the pyroclastic flow (travel time and impact velocity) are well approximated by linear regressions. Proposed estimations of the parameters of pyroclastic flow are useful for the rough and express evaluation of its characteristics.The solid block model is applied to describe the motion of the pyroclastic flow under the joint action of gravity and Coulomb friction. Special attention is paid to characteristics of the pyroclastic flow generated by Montserrat volcano in likely directions. The critical friction angle of the flow propagation is evaluated empirically. Characteristic parameters of the pyroclastic flow (travel time and impact velocity) are well approximated by linear regressions. Proposed estimations of the parameters of pyroclastic flow are useful for the rough and express evaluation of its characteristics.

关 键 词：LANDSLIDE Dynamics SOLID BLOCK Model Soufrière Hills VOLCANO 

分 类 号：P31[天文地球—固体地球物理学]