QUASI-STATIC FAULT GROWTH AND SHEAR FRACTURE ENERGY IN GRANITE

被引:816
作者
LOCKNER, DA
BYERLEE, JD
KUKSENKO, V
PONOMAREV, A
SIDORIN, A
机构
[1] AF IOFFE PHYSICOTECH INST,LENINGRAD 194021,USSR
[2] ACAD SCI USSR,INST PHYS EARTH,MOSCOW 123810,USSR
关键词
D O I
10.1038/350039a0
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 failure process in a brittle granite sample can be stabilized by controlling axial stress to maintain a constant rate of acoustic emission. As a result, the post-failure stress curve can be followed quasi-statically, extending to hours the fault growth process which normally would occur violently in a fraction of a second. Using a procedure originally developed to locate earthquakes, acoustic emission arrival-time data are inverted to obtain three-dimensional locations of microseisms. These locations provide a detailed view of fracture nucleation and growth.
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收藏
页码:39 / 42
页数:4
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