G8 Initiative: Modeling Earthquakes and Earth's Interior Based Upon Exascale Simulations of Seismic Wave Propagation

美国国家科学基金会奖授予普林斯顿大学，资助参与G8研究理事会多边研究倡议通过全球规模问题应用软件跨学科计划竞争性选择的一个项目的美国研究人员。这是美国国家科学基金会、加拿大国家科学与工程研究理事会(NSERC)、法国国家科学与工程研究理事会(ANR)、德国联邦科学促进会(DFG)、日本科学促进会(JSPS)、俄罗斯基础研究基金会(RFBR)和英国研究理事会(RC-UK)之间的试点合作，支持在竞争基础上选出的由至少三个合作伙伴国家的研究人员组成的合作研究项目。这一涉及三个国家合作研究人员的国际项目的主要目标是开发复杂的3D地震成像工具，用于表征地震、地球‘噪音’和在所有尺度上绘制地球内部图。这项研究影响到勘探地球物理、区域和全球地震学，甚至日震学领域。这项拟议的研究将确保地震学家能够有效和高效地利用未来的高性能计算机。该项目将开发和增强开源软件，用于在分层计算机体系结构上模拟三维地震波在声波、弹性和孔洞弹性介质中的传播。这些模拟考虑了地壳和地幔的不均一性、地形、各向异性、衰减、流固相互作用、自引力、自转和海洋。一个主要目标是能够常规而有效地在全球模拟中达到最短周期1 S，这是在我们星球上传播的最短周期信号。这一NSF奖项支持博士后的教育和培训。在拟议研究期间开发的软件将通过地球动力学计算基础设施(CIG)免费提供。该奖项还支持南加州和全球ShakeMovie网站的进一步发展和增强。

This NSF award to Princeton University funds U.S. researchers participating in a project competitively selected by the G8 Research Councils Initiative on Multilateral Research through the Interdisciplinary Program on Application Software towards Exascale Computing for Global Scale Issues. This is a pilot collaboration among the U.S. National Science Foundation, the Canadian National Sciences and Engineering Research Council (NSERC), the French Agence Nationale de la Recherche (ANR), the German Deutsche Forschungsgemeinschaft (DFG), the Japan Society for the Promotion of Science (JSPS), the Russian Foundation for Basic Research (RFBR),and the United Kingdom Research Councils (RC-UK), supporting collaborative research projects selected on a competitive basis that are comprised of researchers from at least three of the partner countries. The primary goal of this international project involving collaborating researchers in three countries is the development of sophisticated 3D seismic imaging tools for the characterization of earthquakes, Earth 'noise', and mapping of Earth's interior on all scales. The research affects the fields of exploration geophysics, regional and global seismology, and even helioseismology. The proposed research ensures that seismologists will be able to effectively and efficiently harness future high performance computers. The project will develop and enhance open-source software for the simulation of 3D seismic wave propagation in acoustic, (an)elastic and poroelastic media on hierarchical computer architectures. These simulations account for heterogeneity in the crust and mantle, topography, anisotropy, attenuation, fluid-solid interactions, self-gravitation, rotation, and the oceans. A major goal is to be able to routinely and efficiently reach a shortest period of 1 s in global simulations, the shortest period signal that propagates across our planet. This NSF award supports the education and training of a postdoc. Software developed during the course of the proposed research period will be made freely available via the Computational Infrastructure for Geodynamics (CIG). The award also supports the further development and enhancement of the southern California and global ShakeMovie web sites.