Tomography with P, PP, and pP delay-time data and the three-dimensional mantle structure below the Caribbean region
Tomography with P, PP, and pP delay-time data and the three-dimensional mantle structure below the Caribbean region
复制标题
P、PP 和 pP 延迟时间数据的断层扫描以及加勒比地区下方的三维地幔结构
DOI：
--
复制
发表时间：
1990
期刊：
影响因子：
--
通讯作者：
R. Hilst
中科院分区：
文献类型：
--
作者：
R. Hilst
在这篇论文中，我提出了两个主要的主题。首先，在第二章和第三章中，我讨论了改进的方法，P延迟时间层析成像是必要的，以获得可靠的断层图像的地幔结构下面的加勒比地区。这些改进包括参考模型伪影的减少和直接P波以外的地震波的合并。虽然受到加勒比地区特有的并发症的启发，这些改进直接适用于其他体波地震层析成像研究。第二，在第5章和第6章中，我提出并讨论了加勒比地区下面的非球面地幔结构的新层析图像。我调查的上地幔和下地幔的结构，深度约1300公里，并将其与构造现象，一直是重要的构造演化的加勒比地区。
I address in this thesis two principal topics. Firstly, in chapters 2 and 3 I discuss improvements on the method of P delay-time tomography which were necessary to obtain reliable tomographic images of the mantle structure below the Caribbean region. These improvements include the reduction of reference model artifacts and the incorporation of seismic waves other than the direct P wave. Although inspired by complications specific for the Caribbean region, these improvements are directly applicable to other seismic tomographic studies with body waves. Secondly, I present and discuss new tomographic images of the aspherical mantle structure below the Caribbean region· in chapters 5 and 6. I investigate the structure of the upper mantle and of the lower mantle to a depth of approximately 1300 km, and relate it to tectonic phenomena that have been important for the tectonic evolution of the Caribbean region.