【摘要】 利用天祝地震前后的资料，采用了比普通频谱分析分辨率更高的最大熵谱方法进行处理，展示了主震前及余震的频谱结构变化，试图提取地震发生前的一些地球物理信息，这对于地震预报将是有益的。更多还原

【Abstract】 Using Tianzhu earthquake data, the authors have analyzed the variation of frequency-spectrum structure before the Tianzhu earthquake and the aftershock by the method of the Largest entropy spectrum whose resolution is higher than the common frequency -spectrum analysis, and they try to get the geophysical information for the prediction before the earthquake.更多还原