中源地震脱水脆变机制的岩石学研究进展

夏阳, 张立飞^*

The Advance of Petrologic Mechanism of Dehydration Embrittlement in Intermediate-depth Earthquakes

Xia Yang, Zhang Lifei

图1 深度与地震数量统计图发生于1964年1月至1986年2月之间, 按深度统计震级不小于5级（ m b ≥5）的年均地震数量。上面一条线统计了全球范围内的地震, 而下面一条线从中排除了汤加-克马德克地区（据文献[ 3 ]绘）
Fig. 1 Distribution of earthquakes with depth Number of earthquakes per year occurring between January 1964 and February 1986 and having m b of 5.0 or greater. The upper line shows rates for the entire world, while the lower line excludes the earthquakes in the Tonga-Kermadec region after reference [ 3 ]