High Pressure and Temperature Physical Properties Measurements for Mantle Constraints

布朗9418827探测器将继续研究在地幔压力和温度条件下候选地幔成分的物理性质(主要是弹性常数和热扩散率)。地震速度提供了地球内部最高分辨率的图像，在解释地震模型时，高压和高温下的实验室校准是必不可少的。这些数据的获取将消除目前与高压不确定外推有关的模糊性，从而将对地幔的热和成分状态提供更好的约束。测量将扩展到高温和高压同时进行，并将启动对高压地幔硅酸盐相的研究。****

Brown 9418827 The PI will continue studies of the physical properties (principally the elastic constants and thermal diffusivity) of candidate mantle constituents under earth mantle conditions of pressure and temperature. Seismic velocities provide the most highly resolved view of Earth's interior and laboratory calibration at high pressure and temperature is essential in interpretation of seismic models. Acquisition of these data will remove the current ambiguities associated with uncertain extrapolations to high pressure, and thus will provide better constraints on the thermal and compositional state of the mantle. Measurements will be extended to simultaneous high temperature and high pressure and studies of high pressure mantle silicate phases will be initiated. ****