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首页> 外文期刊>Geophysical Research Letters >Coseismic displacements of the M-W=6.1, July 9, 1998, Faial earthquake (Azores, North Atlantic) - art. no. 1774
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Coseismic displacements of the M-W=6.1, July 9, 1998, Faial earthquake (Azores, North Atlantic) - art. no. 1774

机译:M-W = 6.1的同震位移,1998年7月9日Faial地震(北大西洋亚速尔群岛)-艺术。没有。 1774年

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1] On 9 July 1998 an earthquake occurred NE of Faial Island (Azores, North Atlantic). The Harvard CMT solution points to a sub-vertical strike-slip event corresponding to the strikes N241E and N151E. Here, we use GPS data to estimate the coseismic displacements and to constrain the geometry of the earthquake source. GPS observations collected between 1993 and 1999 are processed to separate the interseismic and coseismic movements. Additionally, a displacement field is derived from a denser GPS network of 30 stations. We model the coseismic movements by a dislocation in a homogenous elastic half space. The data do not allow to infer the fault strike direction, which have helped to understand the relationships with the regional geodynamics. However, the models give consistent figures for the fault surface (approximate to40 km(2)), the coseismic slip (1 m) and the depth of the upper and lower edges of the fault plane (2 and 6 km). [References: 25
机译:1] 1998年7月9日,法伊尔岛(北大西洋亚速尔群岛)东北发生地震。哈佛CMT解决方案指向与罢工N241E和N151E相对应的次垂直罢工事件。在这里,我们使用GPS数据来估计同震位移并限制震源的几何形状。对1993年至1999年收集的GPS观测数据进行处理,以将地震运动和地震运动分开。此外,位移场是从30个站点的更密集的GPS网络获得的。我们通过均匀弹性半空间中的位错模拟同震运动。数据不允许推断断层走向,这有助于了解与区域地球动力学的关系。但是,这些模型给出了断层表面(大约40 km(2)),同震滑动(1 m)以及断层上下边缘深度(2 km和6 km)的一致数据。 [参考:25

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