Three-Dimensional Velocity Structure and Crustal Thickness Beneath a Slow-Spreading Ridge

慢速扩张脊下的三维速度结构和地壳厚度

• 批准号: 0203228
• 负责人: Robert Dunn
• 金额: $ 17.48万
• 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: 2002
• 资助国家: 美国
• 起止时间: 2002-03-01 至 2005-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0203228&HistoricalAwards=false
• 关键词: Three; Dimensional; Velocity; Structure; Crustal

This study will provide improved resolution of 3D structure and the first 3D images of lower crustal/upper mantle structure beneath a slow-spreading ridge. The results will constrain models of magma plumbing. The project requires some technique development to best combine the wide-angle reflection and refraction data, and will provide insights into the 3D nature of the ridge thermal structure, the existence of any deep crustal or mantle magma reservoirs, the variability in magma supply along the ridge, and the importance of along-axis transport of magma at deep versus shallow levels.

这项研究将提供更高分辨率的三维结构和第一个三维图像下地壳/上地幔结构下的一个缓慢扩张的山脊。结果将限制岩浆管道的模型。该项目需要一些技术开发，以最好地联合收割机结合广角反射和折射数据，并将提供对脊热结构的三维性质，任何深部地壳或地幔岩浆库的存在，岩浆供应沿着脊的变化，以及深与浅层次岩浆沿轴运输的重要性的见解。