Mantle Plume-Lithosphere Interaction: An Interdisciplinary Study of the Dynamics of the Hawaiian Hotspot

地幔柱-岩石圈相互作用：夏威夷热点动力学的跨学科研究

• 批准号: 9303402
• 负责人: David Bercovici
• 金额: $ 22.57万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-03-01 至 1998-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9303402&HistoricalAwards=false
• 关键词: Mantle; Plume; Lithosphere; Interaction; Interdisciplinary

9303402 Bercovici The spatial variability of hotspot signatures is a basic feature of the dynamics of mantle plumes. This variability is most clearly expressed in the formation of discrete islands along the axis of the Hawaiian chain, large wavelength variation in the geoid and topography of the Hawaiian swell, differing geochemical signatures of the volcanoes that comprise the islands, and in the dual, parallel ridge system that exists on many of the islands. The purpose of this project is to examine the causes of this spatial variability in the context of the dynamics of mantle plume heads spreading beneath and/or interacting with the lithosphere. This will be done through a synthesis of geophysical and geochemical data analyses with geodynamical modelling. ***

9303402贝尔科维奇热点信号的空间变异性是地幔热柱动力学的一个基本特征。这种变化最明显地表现在沿夏威夷链轴线形成的离散岛屿、夏威夷海浪的大地水准面和地形的巨大波长变化、构成这些岛屿的火山的不同地球化学特征以及许多岛屿上存在的双重平行山脊系统。该项目的目的是在地幔热柱在岩石圈之下扩散和/或与岩石圈相互作用的动力学背景下，审查这种空间变异性的原因。这将通过地球物理和地球化学数据分析与地球动力学模型的综合来实现。***