High-temperature Elastic Wave Speeds of Mantle Minerals and their Seismological Implications

弹性波速的实验室测量对于解释地球深部的地震学模型至关重要。在过去的几年里，澳大利亚国立大学和石溪大学的研究小组分别证明了新的实验技术，用于测量弹性波速对温度的依赖性。现在提出了一个及时的合作，我们将利用在两种非常不同的压力制度下接近相似的温度范围来检查波速的混合压力-温度依赖关系，这对于推断地球地幔内的化学成分，矿物组成和温度变化至关重要。

Laboratory measurements of elastic wave speeds are critical for the interpretation of seismological models for the Earth's deep interior. During the past several years, research groups at ANU and Stony Brook University have separately been proving novel experimental techniques for measurement of the temperature dependence of elastic wave speeds. Now a timely collaboration is proposed in which we would exploit access to similar temperature ranges under two very different pressure regimes to examine the mixed pressure-temperature dependence of wave speeds that is so critical for the inference of chemical composition, mineralogical make-up, and temperature variations within the Earth's mantle.