Collaborative Research: Seismic Analysis of Upper-Mantle Dynamics: Slow-Seafloor Spreading and Hotspot Interaction in the Atlantic

该项目有三个相互重叠的地震学目标，其主要科学目标是确定雷克扬斯海脊和科尔贝恩西海脊之下地幔流动和熔体供应的性质，并确定冰岛热点对海底扩张系统的影响。表面波分析将用于确定岩石圈厚度、热结构和熔体分布。地震各向异性将被用来确定地幔上涌的性质。将评估其他地方由织物引起的各向异性，以确定冰岛对上升流的影响。除ICEMELT和HotSpot数据集外，还将使用位于冰岛、其他大西洋岛屿和大西洋边缘的宽带地震台的数据集。

This project has three overlapping seismological objectives that are motivated by the principal scientific goal of characterizing the nature of mantle flow and melt supply beneath the Reykjanes and Kolbeinsey Ridges and to determine the influence of the Icelandic hotspot on the seafloor spreading system. Surface wave analyses will be used to determine lithospheric thickness, thermal structure and melt distribution. Seismic anisotropy will be used to determine the nature of mantle upwelling. Fabric-induced anisotropy elsewhere will be evaluated to determine the influence of Iceland on upwelling. Data sets from broad-band seismic stations located on Iceland, other Atlantic islands, and along the Atlantic margin will be used in addition to the ICEMELT and HOTSPOT data sets.