Deep seismic structures beneath India and South Atlantic

通过这个项目，我们计划调查地球深部的三个不同区域，以更好地了解地球地幔的动力学，矿物学和演化过程。将调查的三个地区是：i）大西洋下的D”区，非洲下方的大型低速异常的边缘所在，ii）印度下方的地幔过渡带结构，为了更好地理解相变（及其动力学）的任何一方和俯冲区域内和iii）深俯冲岩石圈的检测（特提斯洋）在印度下面的过渡带下面。通过部署20个新资助的地震台站（DFG Großgeräte方案），作为已经在进行的研究阿尔沃兰海的地震实验（PICASSO/Topo伊比利亚）的延伸，将可以获得一个涵盖西班牙南部和摩洛哥的三年多的大型数据集。通过大的横向和时间范围的实验，有可能获得大量的高分辨率图像的地球深部地震结构。我们将使用高分辨率地震阵列方法，并将其与地球动力学和矿物物理学的建模方法和结果联合收割机相结合，以进一步了解地球深部结构及其形成过程。

Through this project we are planning to investigate three different regions in the deep Earth in order to better understand the dynamical, mineralogical, and evolutionary processes of the Earth's mantle. The three areas that will be investigated are i) the D" region beneath the Atlantic, where an edge of the large low velocity anomaly beneath Africa is located, ii) The mantle transition zone structure beneath India, in order to better understand phase transitions (and their kinetics) on either side and within a subduction region and iii) the detection of deep subducted lithosphere (Tethys ocean) below the transition zone beneath India. Through a deployment of 20 newly funded seismic stations (DFG Großgeräte program) as an extension to an already running seismic experiment that studies the Alboran Sea (PICASSO/Topo Iberia) a large dataset spanning over three years covering southern Spain and Morocco will become accessible. Through the large lateral and temporal extent of the experiment, it is possible to obtain a large amount of high-resolution images of deep Earth seismic structures. We will use high-resolution seismic array methods and combine those with modelling methods and results from geodynamics and mineral physics to further our knowledge on deep Earth structures and the processes that cause them.