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

合作研究：上地幔动力学的地震分析：大西洋的缓慢海底扩张和热点相互作用

• 批准号: 0327382
• 负责人: James Gaherty
• 金额: $ 11.45万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-09-01 至 2004-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0327382&HistoricalAwards=false
• 关键词: Collaborative; Research; Seismic; Analysis; Upper

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.

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雅未克海脊和科尔拜因西海脊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。 面波分析将用于确定岩石圈厚度、热结构和熔体分布。 地震各向异性将用于确定地幔上涌的性质。 将评估其他地方的结构诱导各向异性，以确定冰岛对上升流的影响。 除冰岛微波炉和热点数据集外，还将使用冰岛、其他大西洋岛屿和沿着大西洋边缘的宽频带地震台站的数据集。