Joint Inversion of Seismic Body and Surface Wave Data

地震成像方法，如反射剖面、广角成像、表面波层析成像和远震层析成像，在提高我们对岩石圈结构和物理性质的理解方面发挥了至关重要的作用。然而，一个关键的挑战仍然是解开下地壳和邻近岩石圈地幔之间的结构关系；如果我们要正确理解基本的地球过程，如大陆生长、俯冲、裂谷、火山作用、分层和矿化，这是必不可少的。传统的成像方法很难解决这个问题，因为需要考虑莫霍地层，而且缺乏既能解决地壳结构又能解决上地幔结构的数据集。虽然最近的一些进展，包括多个数据集的联合反演和环境噪声成像，有助于解决这些挑战，但如果我们要实现岩石圈的真正综合视图，仍然需要做大量的工作。该项目的目的是开发和应用体波和面波数据的联合反演方法，以便对整个岩石圈的全厚度结构进行成像，从而更好地了解形成地壳-上地幔系统的过程。全波形反演将是该项目中使用的主要工具，重点是整合一系列不同的数据集，包括本地地震、远震、环境噪声和可能的有源。

Seismic imaging methods such as reflection profiling, wide-angle imaging, surface wave tomography, and teleseismic tomography have played a crucial role in advancing our understanding of the architecture and physical properties of the lithosphere. However, a key challenge that remains is to unravel the structural relationship between the lower crust and adjacent lithospheric mantle; this is essential if we are to properly understand fundamental Earth processes such as continental growth, subduction, rifting, volcanism, delamination and mineralisation. Traditional imaging methods have struggled to address this issue due to the need to account for the Moho and the lack of datasets which can resolve both crustal and upper mantle structure. While several recent advances, including the joint inversion of multiple datasets and ambient noise imaging, have helped to address these challenges, considerable work is still required if we are to achieve a truly integrated view of the lithosphere. The aim of this Project is to develop and apply methods for the joint inversion of body and surface wave data in order to image structure throughout the full thickness of the lithosphere, thereby achieving a greater understanding of the processes which shape the crust-upper mantle system. Full waveform inversion will be the primary tool used in this project, with an emphasis on integrating a range of different datasets, including local earthquake, teleseismic, ambient noise, and where possible active sources.