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前言 一九七五年二月四日,我国辽宁省海城县发生了一次7.3级强烈地震。由于这次地震预报和预防工作的成功极大地减少了伤亡损失,取得了预报和预防破坏性地震的一些很有意义的经验。它充分显示了经过无产阶级文化大革命之后,我国地震工作在毛主席革命路线指引下取得的新成就。 这次海城地震是我国东北有记载以来第一个七级以上的浅源地震。在宏观调查的基础上,我们先后两次对震区及其邻近地区进行了地震地质考察。通过综合分析,初步认为
Preface On February 4, 1975, a strong earthquake of magnitude 7.3 occurred in Haicheng County, Liaoning Province, China. Due to the success of this earthquake prediction and prevention work, the casualty loss has been greatly reduced, and some very meaningful experiences in forecasting and preventing destructive earthquakes have been achieved. It fully shows the new achievements made by our earthquake work under the guidance of Chairman Mao’s revolutionary line after the Great Proletarian Cultural Revolution. The Haicheng earthquake was the first shallow earthquakes above Seventh grade recorded in Northeast China. Based on the macroeconomic survey, we conducted seismic geological surveys twice on the earthquake area and its adjacent areas. Through comprehensive analysis, initially think