U.S.-Japan Cooperative Science: Seismological Study of the Upper Mantle Transition Zone Associated with Northwestern Pacific Subduction Zones

美日合作科学：与西北太平洋俯冲带相关的上地幔过渡带的地震学研究

• 批准号: 9603327
• 负责人: Fumiko Tajima
• 金额: $ 1.65万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-05-15 至 1999-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9603327&HistoricalAwards=false
• 关键词: U.S.; Japan; Cooperative; Science; Seismological

9603327 Tajima This award supports a one year collaborative research project between Professor Fumiko Tajima of the University of Texas in Austin, Professor Craig Bina of Northwestern University and Dr. Yoshio Fukao of the Earthquake Research Institute at the University of Tokyo in Japan. This project involves a seismological study of the upper mantle transition zone associated with the Northwestern Pacific subduction zones. The major goal of this project is to improve the 3-D images produced by tomographic inversion. The project brings together the efforts of two major laboratories that have constituted different parts of the process: the Americans will produce thermal and bulk compositional models for the mantle and subduction zone and the Japanese will correct for residuals and modify the 3-D travel time inversion code to include travel time data for later arrivals. The seismic structure of the upper mantle transition zone, from 400-700 km depth is of fundamental importance for understanding the mode of convection within the Earth's mantle. Improving the 3-D whole mantle tomographic models will provide for better understanding of this structure. Through the exchange of ideas and technology, this project will broaden our base of basic knowledge and promote international understanding and cooperation. ***

小行星9603327 该奖项支持德克萨斯大学奥斯汀分校的Fumiko Tajima教授、西北大学的克雷格比纳教授和日本东京大学地震研究所的Yoshio Joshao博士之间为期一年的合作研究项目。 该项目涉及对与西北太平洋俯冲带有关的上地幔过渡带进行地震学研究。 本计画的主要目的是改善层析反演所产生的三维影像。 该项目汇集了两个主要实验室的努力，这两个实验室构成了该过程的不同部分：美国人将为地幔和俯冲带制作热模型和整体成分模型，日本人将校正残差并修改三维旅行时间反演代码，以包括后来到达的旅行时间数据。 400-700 km深度上地幔过渡带的地震结构对于了解地球地幔内的对流模式至关重要。 改进三维全地幔层析成像模型将有助于更好地了解这种结构。 通过交流思想和技术，该项目将扩大我们的基础知识，促进国际理解与合作。 ***