蒙特里海湾的地震活动显示在圣格雷戈里奥断层（ＳＧＦ）北部的大部分事件呈零星分布状。缺乏在蒙特里海湾附近的地震记录仪和使用从内陆地区确定震源位置和震源机制的速度模式无法肯定、精确地确定海湾内的地震事件。１９９７～１９９８年间，蒙特里海湾Ａｑｕａｒｉｕｍ调查 Earthquake activity in Monterey Bay shows that most of the events in the northern part of the San Gregorio Fault (SGF) are sporadic. The lack of seismographs near Monterey Bay and the use of velocity models that determine hypocenters and focal mechanisms from inland areas can not be determined with certainty and accurately determine seismic events within the bay. 1997-1998, Monterey Bay Aquarium survey