Using the Wushi MS 7.1 earthquake sequence catalog on January 23,2024 the b-value of the earthquake sequence was calculated using the maximum likelihood method and the evolution characteristics of b-value in the central earthquake zone were analyzed. The main conclusions are as follows:①There is a significant decrease in b-value before strong aftershocks,but itcould not be accurately evaluated the number of strong aftershocks after the b-value decreases. ② b-value can reflect the stress level of different times in the aftershock zone,and has certain indicative significance for the prediction of strong aftershocks.
关键词
乌什MS/7.1地震序列/b值/最大似然法/时间演化特征
Key words
Wushi MS 7.1 earthquake sequence/b-value/maximum likelihood method/temporal evolution feature
万方数据