Abstract: The Zhangzhou-Huaan is an active region of moderate earthquakes, where earthquakes occur frequently today. Based on analysing characteristics of historical and earthquakes in the region, we find that there is a correlation to a fixed extent of seismic activities between this region and Fujian-Taiwan region. We thus name this region as "earthquake window". And the formation of this "earthquake window" is closely related with an upward force provided by the heat from the deep of earth.

Key words: Zhangzhou-Huaan, Earthquake window, Heat anomaly, Low velocity layer, Collision

摘要： 漳州-华安是一个中强地震活动区,现今小震活动频繁。本文分析该区历史和现今地震活动特点,发现该区地震活动性涨落与闽台强震活动存在一定的相关性,因而得出该区是一个“地震窗”的认识。进而对“地震窗”的形成条件进行讨论,认为该区“地震窗”的形成是与其深部热作用所产生的向上垂直作用力紧密相关。

关键词: 漳州—华安, 地震窗, 地热异常, 低速层