The deep roots of the western Pyrenees revealed by full waveform inversion of teleseismic P waves
The deep roots of the western Pyrenees revealed by full waveform inversion of teleseismic P waves
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远震P波全波形反演揭示西比利牛斯山脉的深层根源
DOI：
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发表时间：
2016
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影响因子：
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通讯作者：
Roland Martin
中科院分区：
文献类型：
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作者：
Yi Wang;Yi Wang;S. Chevrot;V. Monteiller;D. Komatitsch;F. Mouthereau;G. Manatschal;M. Sylvander;Jordi Díaz;M. Ruiz;F. Grimaud;S. Benahmed;H. Pauchet;Roland Martin
需要对山根的结构进行成像，以了解地形的支持和会聚板块边界的运动学重建，但传统的地震成像方法仍然具有挑战性。在这里，我们提出了一个三维模型的压缩和剪切速度在西部比利牛斯山脉（欧洲西南部）的岩石圈下，通过全波形反演的P2P波。这个层析模型揭示了伊比利亚地壳俯冲到欧洲板块之下，以及欧洲蛇纹化的次大陆地幔侵位在Mauleon盆地之下的浅地壳水平。裂谷继承地幔楔在比利牛斯会聚过程中起着压头的作用。这些新的结果提供了令人信服的证据断裂继承的结构在阿尔卑斯造山带造山作用。
Imaging the architecture of mountain roots is required to understand the support of topography and for kinematic reconstructions at convergent plate boundaries, but is still challenging with conventional seismic imaging approaches. Here we present a three-dimensional model of both compressional and shear velocities in the lithosphere beneath the western Pyrenees (southwest Europe), obtained by full waveform inversion of teleseismic P waves. This tomographic model reveals the subduction of the Iberian crust beneath the European plate, and the European serpentinized subcontinental mantle emplaced at shallow crustal levels beneath the Mauleon basin. The rift-inherited mantle wedge acted as an indenter during the Pyrenean convergence. These new results provide compelling evidence for the role of rift-inherited structures during mountain building in Alpine-type orogens.