Technical Support for University of California, Riverside Technophysics Laboratory

为加州大学河滨分校技术物理实验室提供技术支持

• 批准号: 9731383
• 负责人: Harry Green
• 金额: $ 7.26万
• 依托单位: University of California-Riverside
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-03-01 至 2000-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9731383&HistoricalAwards=false
• 关键词: Technical; Support; University; California; Riverside

9731383 Green This grant provides partial salary support for a technician at the UC-Riverside Tectonophysics laboratory. This is a Phase II grant for technical support under the EAR/IF program. The technician is essentially a machinist who provides the necessary high precision fabrication of parts for continued development of Dr. Green's modified multianvil device used in studies of the deformation mechanics of deep mantle phases. This innovative and unique high pressure multianvil device introduces shear stresses on samples contained in a NaCl confining media, thereby reducing piston frictional effects and resultant spatial temperature variations within the sample volume. Experimental results using this device with germanate and titanate analogues of deep mantle silicates has resulted in Green's hypothesis that deep-focus earthquakes within subduction zones are the result of a phase change from olivine to a spinel polymorph. Work in the arena of high-pressure phase change initiation of faulting continues with synthetic silicates and improvements in the engineering design of Green's modified multianvil device. These experiments hold considerable promise for our understanding of deep earthquake mechanics. ***

9731383格林这笔赠款为加州大学河滨分校构造物理实验室的一名技术人员提供部分工资支持。这是EAR/IF计划下的技术支持的第二阶段赠款。技术人员本质上是一名机械师，为格林博士用于研究深部地幔相变形机制的改进型多顶锤装置的继续开发提供必要的高精度零件制造。这一创新和独特的高压多顶锤装置在包含在氯化钠封闭介质中的样品上引入剪应力，从而减少了活塞摩擦效应和由此产生的样品体积内的空间温度变化。使用该装置对深部地幔硅酸盐的锗酸盐和钛酸盐类似物进行的实验结果，导致了格林的假说，即俯冲带内的深源地震是从橄榄石到尖晶石多晶型相变的结果。在高压相变引发断层的领域中，合成硅酸盐的工作仍在继续，格林改进的多砧板装置的工程设计也在改进。这些实验为我们理解深部地震力学提供了相当大的希望。***