Tomographic Imaging of the Earth's Deep Interior and Implications for Mantle Flow Models

小行星9628087货车 这项研究涉及改进的断层成像地球的地幔，使俯冲岩石圈板块的系统研究。 层析成像与板块构造重建和流体动力学模拟相结合。 先前的工作包括重新处理国际地震中心的整个目录，包括非线性震源重新定位和相位重新确定;这导致数据质量比以前在全球走时层析成像中使用的数据质量有所提高。 目前的项目将利用这些数据对高分辨率区域模型和全地幔模型进行全球成像。 其主要目标是制作具有足够分辨率的地震速度模型，以便对全世界的岩石圈板进行系统调查，特别是对整个下地幔板的穿透深度进行调查。 然后，将在数值流动模拟和板块运动历史的背景下测试由此产生的速度模型。 ***

9628087 Van Der Hilst This research involves improved tomographic imaging of the Earth's mantle to enable a systematic study of subducting lithospheric slabs. The tomographic imaging is to be integrated with plate tectonic reconstructions and fluid dynamical modeling. Prior work included reprocessing of the entire catalogue of the International Seismological Centre, including non-linear hypocenter relocation and phase re-identification; this has resulted in a data quality that is improved relative to that used previously in global travel-time tomography. The current project will use this data for the global imaging for both high-resolution regional models and whole mantle models. The primary goal is to produce seismic velocity models with sufficient resolution for a systematic investigation of lithospheric slabs world wide, in particular the depth of penetration of the slabs throughout the lower mantle. The resulting velocity models will then be tested in the context of numerical flow simulations and the history of plate motions. ***