【摘要】 本文通过对四川历年年度地震趋势报告中提出的地震学和前兆各学科中期异常项次的统计分析,总结回顾了四川地震学和前兆各学科监测预报呈现的三个历史阶段,分析了地震学和前兆各学科年度异常的进程变化特点,探讨了地震学和前兆各学科历年的年度异常进程变化中反映出的"远场效应性异常"问题。更多还原

【Abstract】 A statistical analysis and discussion on intermediateterm anomaly items of earthquake precursors written in the annual report for the earthquake trend of Sichuan Province are made.The three historical steps are recalled.The characters of both monitoring and prediction of earthquake are summarized.The distance effective anomalies implied in the change processes of annual anomaly related to seismological and other subjects of earthquake precursors mentioned in the annual reports for the earthquake trend of Sichuan Province are discussed.更多还原