【摘要】 对四川省境内24个观测井记录到的青海玛多M_S7.4地震同震响应特征开展对比分析，结果表明：该地震同震响应特征主要有振荡型、阶升型（震荡―阶升）、阶降型（阶升―阶降）。震中距Δ≥840 km水位同震以震荡―恢复型为主；阶升型、阶降型主要分布在震中距Δ≤700 km范围内。水位同震响应幅度、响应持续时间与震中距负相关性较弱，响应时间与震中距呈正相关性，水位地震能量密度与震中距负相关性较强。2022年雅安芦山县M_S6.1地震和2023年泸定M_S5.6地震均发生在同震阶升集中区，说明这一同震响应特征具有一定前兆意义，可为地震监测预报提供思路。更多还原

【Abstract】 A comparative analysis was conducted on the co-seismic response characteristics recorded by 24 observation wells in Sichuan Province during theM_S7. 4 Qinghai Maduo earthquake. The results show that the co-seismic response characteristics of this earthquake are mainly of the oscillation type, step-up type(oscillation-step up), and step-down type(step-up-step down). The epicentre distance Δ≥840 km and the water level co-earthquake are mainly shake-recovery type. The step-up type and step-down type are mainly distributed within the distance of Δ≤700 km. The negative correlation between the amplitude and duration of water level coseismic response and the epicenter distance is weak, the response time and the epicenter distance are positive, and the seismic energy density of water level is strong. TheM_S6. 1 earthquake in Lushan County of Ya ’an in 2022 and the M_S5. 6 earthquake in Luding in 2023 both occurred in the concentrated area of coseismic magnitude rise, indicating that this co-seismic response characteristic has certain precursory significance and can provide ideas for earthquake.更多还原