【摘要】 2011年3月11日日本本州东南发生9.0级地震(矩震级)。本课题选取了期间南昌台368个波形记录情况,对日本M S9.0级地震序列M S4.7级以上地震波形进行整理分析,通过对该区域地震P波发育情况并对波形特征形成机理进行探讨。通过研究发现:1.震群余震P波发育分布存在一定的分布特征;2.在浅震震群中,影响震群P波发育特征跟主震地质条件有关存在较大关联。更多还原

【Abstract】 The MW9.0 earthquake occurred on March 11,2011 in the east coast of Honshu,Japan.We chose 368 seismic waveforms of Nanchang Seismic Station during the earthquake and analyzed the seismic waveforms above the level of MS4.7.W discussed P-wave development state and its formation mechanism.The results show:1.The distribution of P-wave development of the swarm of aftershocks has certain rules;2.P-wave development is closely related to the geological conditions of main shock.更多还原