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共搜集到1960～1990年中、南美洲地区10个地震序列。其中1个是板内地震序列。这个板内地震序列表现出的特征是：震中分布区域的长轴较短，长短轴之比低；余震震源机制和主震震源机制相比变化大。其余9个是俯冲带上的板缘地震序列，它们的共同特征是：震中分布区域的长轴较长；震源深度下限超过地壳，可以达到70km以下（第10号序列例外）；主震的震源机制受俯冲带的走向、倾向和倾角的控制。但是这些地震序列又分为两种情况：（1）有5个地震序列，其震中分布区域的长轴走向和俯冲带的走向相同；（2）有4个地震序列，其震中分布区域的长轴走向和俯冲带俯冲方向相同，即和俯冲带的走向垂直。前者的特征是；震中分布区域的长短轴之比高；余震震源机制和主震震源机制相比除了序列初期的个别地震外，差异甚小。而后者的情况比较复杂，有些地震序列震中分布区域的长短轴之比低，个别地震序列后期余震震源机制和主震震源机制的差别大。
A total of collected from 1960 to 1990 in Central and South America 10 earthquake sequences. One of them is an intra-plate earthquake sequence. The characteristics of this intraplate earthquake sequence are as follows: the long axis of the epicenter distribution area is short and the ratio of the long axis to the short axis is low; and the aftershock focal mechanism varies greatly from the focal mechanism of the main shock. The remaining nine are slab margin seismic sequences on the subduction zone. Their common feature is that the long axis of the epicenter is longer; the lower limit of focal depth exceeds the crust and can reach below 70 km (except for No. 10 sequence); the source of the main shock The mechanism is controlled by the trend, dip and inclination of the subduction zone. However, these earthquake sequences are divided into two cases: (1) there are 5 seismic sequences whose major axis direction of the epicenter distribution is the same as that of the subduction zone; (2) there are 4 seismic sequences whose length of epicenter distribution The subduction direction is the same with that of the subduction zone, ie perpendicular to the direction of the subduction zone. The former is characterized by a high ratio of long and short axes in the distribution area of the epicenter; the aftershock focal mechanism has little difference from the focal mechanism of the mainshock except for the individual earthquakes at the beginning of the sequence. In the latter case, the situation is rather complicated. In some earthquake epicenters, the ratio of the major axis to the minor axis in the distribution area of the epicenter is low, and the difference between the focal mechanism of the aftershocks of individual seismic sequences and the focal mechanism of the mainshock is large.