Structure & physical Properties of Earth Interior at High Pressure

为了了解地球物质在高温高压下的流变学、地震和板块俯冲的动力学，我们研究了地球物质在高温高压下的相变和结构变化。我们还利用同步加速器和中子衍射法与德国的结晶学家和矿物学家开展了固体地球科学和高压技术方面的合作工作。为了了解上述力学过程，通过模拟地球内部发现的物理化学过程作为温度、压力、分压、电场和温度的函数，进行了定量动力学研究。磁场和化学势。我们的研究不仅对于高压下物质结构和结构的科学情报是有价值的，而且对于分析地壳动力学和地幔科学的机制也是有价值的。目前的研究对德国和日本矿物科学的合作提供了很大的影响。(1)结构随地球内部的上升和下降而变化(晶体内扩散的精确测量和计算机模拟作为压力-温度-时间的函数)。(2)高压和温度下晶格的塑性和弹性变形分析。(3)土体材料的流动性作为体积模数等导出力的函数，粘度、热膨胀率、弹性速度。

In order to comprehend the dynamics of theology, earth quake and subduction of slab in the earth crust or mantle, we investigate the phase transition and structure change of earth materials under high temperature and pressure. We have also proceed the collaboration works concerning the solid state earth science and high pressure technology with German crystallographers and mineralogists using synchrotron and neutron diffraction.It has been known that structure and texture changes of minerals composed of polycrystalline materials under stress field induces the solid mobility. For the purpose of understanding the above mentioned mechanical process, quantitative kinetic investigations has been undertaken by the simulation of physco-chemical process found in the earth interiors as a function of temperature, pressure, partial pressure, electric field, magnetic field and chemical potential.Our investigations are worth while not only for science intelligence of material structure and texture under high pressure but also for the suggestions to the analysis of the mechanism of the earth crust dynamics and mantle science.The present research has provided the great influence to the collaboration between German and Japanese mineral science.The following research projects have been performed :(1) Structure change with ascent and descent of earth interiors (precise measurement of intracrystalline proliferation and computer simulation as a function of pressure-temperature-time.)(2) Analysis of plastic and elastic deformation of crystal lattice under high pressure and temperature.(3) Mobility of earth materials as functions of such deriving forces as bulk modulus, viscosity, thermal expansibity, elastic velocity.