Long and Medium-Term Research: High Resolution Delineation of Earth Structure

VanDeCar Long-&Amp；中期研究：地球结构的高分辨率该奖项是在长期计划下颁发的外国卓越中心的中期研究，使美国科学家和工程师能够在国外公认的卓越研究中心进行为期三到十二个月的研究。该项目的奖项提供了联合研究的机会，并提供了在国外使用独特或免费的设施、专业知识和实验条件的机会。该奖项由Robert S.Crosson博士发起，将支持华盛顿大学John Cloway VanDeCar博士与乌得勒支大学Guust Nolet博士和Roel Snieder博士进行为期12个月的博士后研究访问。为了更好地了解地幔，特别是构造活动区的结构，更好地回答有关构造过程的基本问题，研究人员建议：(A)从大数据集中提取更准确的参数和定量数据协方差估计；(B)将稳健的统计技术应用于地震反演问题，以帮助说明非高斯噪声分布和严重误差；(C)必要时采用非线性反演技术；以及(D)将不同的地球物理数据集(例如重力、相位幅度)纳入地震反演问题，以帮助约束所得到的模型的唯一性。他们还打算进行详细的分辨率分析(A-D)，以便结合适当的理论，确定最高质量的数据可以对小尺度地球结构施加什么限制。该奖项建议提供资金用于国际旅行，并为美国本土机构提供250美元的固定行政津贴。

VanDecar Long- & Medium-Term Research: High Resolution of Earth Structure This award is under the Program for Long-& Medium Term Research at Foreign Centers of Excellence, which enables U.S. scientists and engineers to conduct three to twelve months of research abroad at research centers of proven excellence. The program's awards provide opportunities for joint research, and the use of unique or complimentary facilities, expertise and experimental conditions abroad. This award for a proposal sponsored by Dr. Robert S. Crosson will support a twelve-month postdoctoral research visit by Dr. John Calloway VanDecar of the University of Washington with Drs. Guust Nolet and Roel Snieder of the University of Utrecht. In order to improve knowledge of the Earth's mantle, and in particular the structure of tectonically active regions, to better answer fundamental questions about tectonic processes, the researchers propose to (A) extract from large data sets more accurate parameters and quantitative data covariance estimates; (B) apply robust statistical techniques to seismic inversion problems to help account for non-Gaussian noise distributions and gross errors; (C) implement non-linear inversion techniques where necessary; and (D) include diverse geophysical data sets (e.g., gravity, phase amplitudes) into the seismic inversion problem in order to help constrain the uniqueness of resulting models. They also intend to perform detailed resolution analyses with (A - D) in place in order to determine what limits the highest quality data, combined with appropriate theory, can place on small scale earth structure. The award recommendation provides funds to cover international travel and a flat administrative allowance of $250 for the U.S. home institution.