U.S.-Japan Cooperative Science: Structure, Seismicity and Tectonics of the Japanese Island Arc from New Deep Seismic Exploration

9726766布朗该奖项支持康奈尔大学的拉里·布朗教授和日本东京大学的平田直史教授之间为期三年的合作研究项目。研究人员将通过新的深层地震勘探对日本岛弧的结构、地震活动和构造进行研究。日本科学家正在制定一项计划，通过在陆地上进行深度地震调查，并与近海海洋团体的类似努力相结合，对日本岛屿进行系统勘探。他们正在开发一种新的深地震反射/折射剖面。该断面将试图勾勒出目前构造边界条件相对简单的地区深部主要活动的弧内断裂的几何形状。这些几何形状在理解地壳内的应变分配和地震构造的相关动力学模型方面是一个关键的缺失元素。研究人员将专注于深部地震调查的最佳设计和执行，以及解释这些调查结果的综合、全球方法。该项目汇集了两个拥有互补专业知识和研究能力的实验室的努力。康奈尔大学将提供反射地震方法应用于各种岩石圈成像问题的专业知识，而日本研究人员将提供断层构造和地震机制方面的专业知识。日本深部地震剖面的地质目标在其所在地区具有科学价值。然而，这些结果也可能对其他领域的研究人员产生更广泛的影响，无论是在大陆演化和活动构造的技术开发和地质模型方面。年轻的科学家也将参与这个项目。通过思想和技术的交流，这个项目将扩大我们的基础知识基础，促进国际理解与合作。***

9726766 Brown This award supports a three year collaborative research project between Professor Larry Brown of Cornell University and Professor Naoshi Hirata of the University of Tokyo in Japan. The researchers will be undertaking a study of the structure, seismicity and tectonics of the Japanese island arc from new deep seismic exploration. Japanese scientists are developing a program for the systematic exploration of the Japanese islands by deep seismic surveys on land to be combined with comparable efforts by marine groups offshore. They are developing a new deep seismic reflection/refraction transect. The transect will attempt to delineate the deep geometry of major active, intra-arc faults at depth in an area where the current tectonic boundary conditions are relatively simple. These geometries are a critical missing element in understanding strain partitioning within the crust and the dependent dynamic models of earthquake tectonics. The researchers will focus on optimal design and execution of deep seismic surveys, coupled with an integrated, global approach to interpreting the results of those surveys. This project brings together the efforts of two laboratories that have complementary expertise and research capabilities. The Cornell group will provide expertise in the application of reflection seismic methods to a wide variety of lithospheric imaging problems while the Japanese researchers will provide expertise in fault tectonics and earthquake mechanisms. The geologic targets of deep seismic profiling in Japan are of scientific interest in their own area. However, these results are also likely to have much broader implications for researchers in other areas, both in terms of technique development and geological models of continental evolution and active tectonics. Younger scientists will also be participating in this project. Through the exchange of ideas and technology, this project will broaden our base of basic knowledge and promo te international understanding and cooperation. ***