Silver P G, Beck S L, Wallace T C, Meade C, Myers S C, James D E, Kuehnel R
Science. 1995 Apr 7;268(5207):69-73. doi: 10.1126/science.268.5207.69.
The M(w) = 8.3 deep (636 kilometers) Bolivian earthquake of 9 June 1994 was the largest deep-focus earthquake ever recorded. Seismic data from permanent stations plus portable instruments in South America show that rupture occurred on a horizontal plane and extended at least 30 by 50 kilometers. Rupture proceeded at 1 to 3 kilometers per second along the down-dip azimuth of the slab and penetrated through more than a third of the slab thickness. This extent is more than three times that expected for a metastable wedge of olivine at the core of the slab, and thus appears to be incompatible with an origin by transformational faulting. These large events may instead represent slip on preserved zones of weakness established in oceanic lithosphere at the Earth's surface.
1994年6月9日发生的玻利维亚Mw = 8.3级深源（636公里）地震是有记录以来最大的深源地震。来自南美洲永久性台站以及便携式仪器的地震数据显示，破裂发生在一个水平面上，延伸范围至少为30×50公里。破裂沿着板块下倾方位以每秒1至3公里的速度推进，穿透了超过三分之一的板块厚度。这个范围是板块核心处橄榄石亚稳楔预期范围的三倍多，因此似乎与转换断层成因不相容。这些大型事件可能反而代表了在地球表面海洋岩石圈中已存在的薄弱带发生的滑动。
