Shock Wave Measurements on Mantle Minerals and Magmas

地幔矿物和岩浆的冲击波测量

• 批准号: 9315954
• 负责人: Thomas Ahrens
• 金额: $ 33万
• 依托单位: California Institute of Technology
• 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: 1994-02-01 至 1997-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9315954&HistoricalAwards=false
• 关键词: Shock; Wave; Measurements; Mantle; Minerals

9315954 Ahrens The PIs will extend their measurements of shock wave pressure-density measurements for molten silicates and magmas from the present range of available data to the entire pressure and temperature range of the present and primordial mantle. They will also conduct shock wave experiments in the same regime on liquid, glass, and single crystals of MgSiO3, (Mg0.9Fe0.1)SiO3, and CaMgSi2O6. These data can be used to calculate shock temperatures, and more importantly, isentropic temperature changes in a convecting magma ocean or upon ascent of magmas from depths in the Earth. They will systematically study the equation of state of molten fayalite to 40 GPa in order to understand the effects of Fe2+ on the equation of state of molten mantle silicates. In addition, they will investigate a high pressure phase transition in serpentine in order to further understanding of the effect of water on the high pressure elasticity of mantle silicates. ****

[9315954]阿伦斯：pi将把他们对熔融硅酸盐和岩浆的冲击波压力-密度测量从现有的可用数据范围扩展到现在和原始地幔的整个压力和温度范围。他们还将在相同的条件下对液体、玻璃和MgSiO3、（Mg0.9Fe0.1）SiO3和CaMgSi2O6的单晶进行激波实验。这些数据可以用来计算激波温度，更重要的是，计算对流岩浆海洋或岩浆从地球深处上升时的等熵温度变化。为了了解Fe2+对熔融地幔硅酸盐状态方程的影响，他们将系统地研究40gpa的熔融硅酸盐状态方程。此外，他们将研究蛇纹岩中的高压相变，以进一步了解水对地幔硅酸盐高压弹性的影响。＊＊＊＊