河源新丰江地区地震烈度、地震影响场与新丰江水库大坝设防烈度

简述了1950年以来新丰江水库地区和水库大坝地震烈度的变化，并对新旧大坝设防烈度进行了对比，认为按现今的国家标准，新丰江水库大坝的设防烈度为Ⅶ度强。对库区6次4级以上地震的烈度宏观调查数据进行了分析，拟合了河源地区的地震烈度衰减关系，并与华南地区的地震烈度关系进行了比较．最后计算了新丰江水库地区的在5-6级地震情况下的宏观烈度影响场。

Earthquake Intensity and Influence Field around Heyuan Area and Fortification Intensity of Xinfengjiang Reservoir Dam

In this paper, we introduced the earthquake intensity changes around Xinfengjiang Reservoir since 1950 and compared the fortification intensity of the new dam with the old one. According to the new national standard, it is concluded that the fortification intensity of the dam is Ⅶ. Based on the investigation and analysis of earthquake intensity data for 6 earthquakes with Ms 〉4.0 in the reservoir area, the attenuation relation of earthquake intensity was fitted. By comparing the relation with the one used in South China area, we calculated the macroseopical earthquake influence field in Xinfengjiang Reservoir area with earthquake magnitude between 5 and 6.