In the 1970s, seismologists were surprised that an earthquake near Bishop, Calif., began a sequence of temblors around Mammoth Lakes that eventually spread over a diameter of more than 50 miles and included a half-dozen earthquakes of more than 6.0 magnitude.

加州毕夏普附近发生的一起地震，诱使猛犸象湖周围也跟着发生了一系列地震，方圆50英里以外的地区都受到了波及，震级6.0及以上的余震就发生了6次。