, which has placed instruments nearly two miles deep into the Earth right up against the San Andreas fault to record every creep, rattle, and grind.

• 其显著特色是设在加州帕克菲尔德市的一个观测站，它在圣安德列亚斯断层的正上方距地表近两英里处，安装了各种仪器，用来记录这里的每一次地壳移动、撞击和摩擦情况。