2007年4月1日,一次大海啸地震(MW8.1)使得所罗门群岛俯冲带在一个三联点处破裂。在这个三联点上,澳大利亚板块、所罗门海-伍德拉克盆地板块在不同滑动方向上同时向太平洋板块俯冲。大地震过程中,相关的滑动方向突变使得太平洋板块上部收敛滞弹性变形,这就产生了Simbo俯冲断层之上弧前的局部隆起,潜在地放大了局地海啸振幅。地震周期过程中的弹性形变似乎主要通过上冲的太平洋弧前来调节。这次地震显示了极其年轻的俯冲大洋岩石圈的孕震潜力和横贯坚实地质边界的破裂能力,也显示了引起隆起和海啸的复杂同震滑动的后果。 On April 1, 2007, a tsunami earthquake (MW 8.1) ruptured the Solomon Islands subduction zone at a triple point. At this triple point, the plates of Australia and the Solomon Sea-Woodlake basin subduct simultaneously to the Pacific plate in different sliding directions. In the process of large earthquakes, the perturbation of the sliding direction makes the convergence of the upper Pacific plate anamorphically deformable, resulting in the local uplift before the arc in the Simbo subduction fault, potentially amplifying the local tsunami amplitude. The elastic deformation during the earthquake cycle seems to be mainly regulated by the overshooting Pacific arc. The earthquake shows the seismogenic potential of the very young subducted oceanic lithosphere and its ability to burst across solid geological boundaries and also shows the consequences of complex coseismic slip that causes uplift and tsunamis.