Changes in seismic anisotropy after volcanic eruptions: Evidence from Mount Ruapehu

被引:92
作者
Miller, V [1 ]
Savage, M [1 ]
机构
[1] Victoria Univ Wellington, Inst Geophys, Wellington, New Zealand
关键词
D O I
10.1126/science.1063463
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The eruptions of andesite volcanoes are explosively catastrophic and notoriously difficult to predict. Yet changes in shear waveforms observed after an eruption of Mount Ruapehu, New Zealand, suggest that forces generated by such volcanoes are powerful and dynamic enough to locally overprint the regional stress regime, which suggests a new method of monitoring volcanoes for future eruptions. These results show a change in shear-wave polarization with time and are interpreted as being due to a localized stress regime caused by the volcano, with a release in pressure after the eruption.
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收藏
页码:2231 / 2233
页数:3
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