Tremor and its duration-amplitude distribution at Popocatepetl volcano, Mexico

被引：24

作者：

Arambula-Mendoza, R. ^{[1
]}

Valdes-Gonzalez, C. ^{[2
,3
]}

Varley, N. ^{[4
]}

Reyes-Pimentel, T. A. ^{[3
]}

Juarez-Garcia, B. ^{[3
]}

机构：

[1] Univ Colima, Ctr Univ Estudios & Invest Vulcanol, Colima, Mexico

[2] Univ Nacl Autonoma Mexico, Inst Geofis, Mexico City, DF, Mexico

[3] Ctr Nacl Prevenc Desastres, Mexico City, DF, Mexico

[4] Univ Colima, Fac Ciencias, Colima, Mexico

来源：

GEOPHYSICAL RESEARCH LETTERS | 2016年 / 43卷 / 17期

关键词：

volcanic tremor; volcanic seismicity; lava dome; volcanic risk; Popocatepetl; geologic hazards; LONG-PERIOD SIGNALS; SOURCE MECHANISM; ERUPTION; SEISMICITY; EXTRUSION; EVENTS; ALASKA;

D O I：

10.1002/2016GL070227

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The duration-amplitude distribution was calculated for the tremor observed at Popocatepetl volcano during episodes of activity in 2000 and 2012-2014. An exponential function was used to obtain a good fit for the duration-amplitude distribution, and the source of volcanic tremor is probably generated by the transportation of magmatic fluids and its coupling with the host rock within the volcanic conduit. In particular, harmonic tremor has shown large amplitudes, durations, and mean values of amplitude, more than spasmodic or pulsating tremor. This is due to different generation mechanisms: in the case of harmonic tremor, it is produced during magma ascent and lava dome growth, while spasmodic and pulsating tremors are associated with fragmentation of the lava dome and gas emissions. This paper presents the duration-amplitude distribution as a method to estimate the intensity of the tremor at Popocatepetl, a volcano with the major risk in all Mexico.

引用

页码：8994 / 9001

页数：8

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