SEISMIC ACTIVITY ACCOMPANYING THE OUTBREAK OF THE 1991-1993 ERUPTION OF MT-ETNA (ITALY)

被引：41

作者：

FERRUCCI, F

PATANE, D

机构：

[1] UNIV CALABRIA,DIPARTIMENTO SCI TERRA,I-87030 RENDE,ITALY

[2] CNR,IST INT VULCANOL,I-95123 CATANIA,ITALY

来源：

JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH | 1993年 / 57卷 / 1-2期

关键词：

D O I：

10.1016/0377-0273(93)90034-O

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The character and location of seismic activity accompanying the onset of the 1991-1993 eruption at Mt. Etna are compatible with the surface evidence of the volcanic pile rupture. Both the epicentral distribution and the focal mechanisms of a swarm that occurred on December 14, 1991, agree with magma ascent occurring along the main NNW-SSE-trending structure of the volcano and the consequent opening of a system of effusive fissures with the same trend. A typical mainshock-aftershock sequence, recorded the day after and indicating transcurrent displacement occurring along the second-principal structure of Etna (NE-SW), depicts the tectonic response of the volcanic pile and the underlying basement to major stresses applied by the magma push.

引用

页码：125 / 135

页数：11

共 20 条

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