【摘要】 2009年8月9日10点55分56秒协调世界时(UTC),在日本本州以南的伊豆群岛地区发生了MW7.2地震,震源深度303km.作者利用矩张量快速反演技术,通过反演全球台网的宽频带P波波形得到了这次地震的矩张量解,并判断走向188°、倾角90°、滑动角79°的节面是地震发生的断层面.更多还原

【Abstract】 An MW7.2 earthquake occurred in Izu Islands, off the south coast of Honshu, Japan at 10:55:56 UTC, August 9, 2009. Its focal depth is 303 km. We obtained the moment tensor solution of the earthquake by inverting the P waveforms of broadband recordings from the GSN stations using the quick technique of moment tensor inversion, and further inferred that the nodal plane of strike 188°, dip 90°, rake 79° be the seismogenic fault.更多还原