【摘要】 通过对甘东南及其邻区历史中强地震活动特征和1980年以来的地震活动性异常的分析,认为甘东南地区2004年3月4日玛曲4.8级、8月26日礼县4.5级、9月7日岷县5.0级地震和2003年11月13日的岷县5.2级地震,可能都属于新一轮地震活动的组成部分,是未来发生强震的前奏,表明甘东南及其邻区近年来正在孕育一个6级左右乃至更大的地震。更多还原

【Abstract】 Through the study on the characteristicsof historical moderate-strong earthquakes and seismic activityanomalies from 1980’sin southeat of Gansu province and its neighboring area, It is considered that earthquakes of Maqu MS4.8(4 March,2004), Lixian MS4.5(26 August,2004), Minxian MS5.0(7 September,2004) andMinxian MS5.2 (13 November,2003) are all the members of a new earthquakegroup. Theymay indicate that a MS6.0 or even a larger earthquake is going to conceived in southeastof Gansu province and its neighboringareas.更多还原