辽宁省地震构造研究

SEISMOTECTONIC STUDY ON LIAONING PROVINCE

本文结合编制1∶100万辽宁省地震构造图,分析了辽宁省近20年来地震构造环境相关研究成果,确定辽宁地区共有第四纪以来活动断裂29条,其中全新世断裂1条,晚更新世断裂5条,早、中更新世断裂23条。其中北东向晚更新世活动断裂和北西向全新世活动断裂为辽宁地区的主要控震、发震构造。北东向晚更新世活动断裂与北西向断裂交汇部位、海城河隐伏断裂的端点部位和鸭绿江断裂南西端黄海海域是未来发生中强地震的主要部位。本研究可为深入研究辽宁地区地震构造条件、编制第五代全国地震区划图提供基础资料。

Based on the analyse and study on seismotectonic environment in recent 20 years and the 1： 1000000 Liaoning Seismotectonic Map, it is determined that there are 29 active faults since Quaternary period in Liaoning province. Among those one is Holocene fault, five are Late Pleistocene faults, and twenty-three are Early and Middle Pleistocene faults. NE direction Late Pleistocene fault and NW direction Holocene fault are the main earthquake controlling and seismogenic tectonic. The cross area of NE direction Holocene fault and NW direction and the ends of Haicheng river fault and the ends of southeast Yalujiang fault in the Yellow sea are the main area of destroy earthquake in the future. The study can provide the base data in the Liaoning seismotectonic environmental research and in compiling the fifth seismic zoning map of China.