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Source parameters of the May 29, 2004 South Korea earthquake (ML 5.2)

机译:2004年5月29日韩国地震的震源参数(ML 5.2)

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A moderate earthquake with local magnitude 5.2 ( ML ) occurred off the eastern coast of South Korea on May 29, 2004. This earthquake is one of the largest events near the Korean Peninsula since 1978 when instrumental observations began by the Korea Meteorological Administration. We carried out modeling of regional waveforms and deconvolutions using empirical Green functions to estimate source parameters. The results of the regional waveform modeling show a reverse fault mechanism with a hypocentral depth of 8 km and seismic moment of 5 × 1016 N · m, which is equivalent to Mw 5.1. Performing the empirical Green function deconvolution, we estimated a fault radius of 1.1 to 1.4 km and an average stress drop of 13.5 MPa, assuming an east dipping fault plane. Assuming a west dipping fault plane, we estimated a fault radius of 1.3 to 2.9 km and an average stress drop of 6.6 MPa.
机译:2004年5月29日,韩国东海岸附近发生了5.2级中度地震(M L )。这是自1978年仪器观测开始以来朝鲜半岛附近最大的地震之一。由韩国气象厅提供。我们使用经验格林函数对源波形进行了区域波形和反褶积建模。区域波形模拟结果表明,该震源具有逆震断层机制,震源深度为8 km,地震矩为5×10 16 N·m,等效于Mw 5.1。进行经验格林函数反褶积,假设东倾断层平面,我们估计断层半径为1.1至1.4 km,平均应力降为13.5 MPa。假设向西倾斜断层平面,我们估计断层半径为1.3至2.9 km,平均应力降为6.6 MPa。

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