The duration of fault rupture is related to both how long it takes for a spot on the fault to slip (which seems to be quite fast) and the time it takes rupture to proceed along a fault.

断层断裂的持续时间与断层中某一点滑动的时间有关(可能会相当快)，同时还与沿着断层继续断裂的时间有关。

youdao

So the larger the area of the fault that ruptures, the longer the duration of the earthquake.

因此断层断裂的区域越大，地震持续时间越长。

youdao

Due to the spatial compactness of the fault rupture, the duration of the entire rupture was less than approximately 150 s.

由于断层破裂的空间紧凑性，整个破裂的持续时间约少于150秒。

youdao