【摘要】 本文通过对西南地区1900年以来5级以上地震发生1个月内强余震资料的统计,得到了主震震级与余震震级、时间间隔与震中距之间的经验关系和统计规律。同时,以汶川主余震为例,进行了对比检验。统计结果表明,本文的统计结果是比较可靠的,对今后西南地区余震的预测具有一定的参考价值。更多还原

【Abstract】 Based on analysis of strong aftershocks happened after one month of MS≥5.0 earthquakes occurred since 1900 in Southwestern China, We obtain the experiential formula and statistical relationships between the magnitude of main shocks and magnitude, time and epicenter distance of the aftershocks. Through comparison with the measurement of main shock and aftershocks from Wenchuan Earthquake, we found that our statistical relationships are dependable, and are also valuable to forecast of aftershocks in Southwest China in the future.更多还原