Modeling the Viscoelastiodynamic Response of the Wasatch Mountains, Salt Lake Basin and Mountaindale Dam, Utah

这项研究旨在用重力和活动地震折射方法确定犹他州盐湖谷的地下结构，在三维有限元程序中对产生的结构进行地震波响应建模，并将结果与地震记录数据进行比较。这项研究有望对衰减、地形散射、盆地共振、盆地边界体面波转换和尾波增强效应之间的相互竞争作用有一个新的理解。地形散射结果将应用于犹他州Wasatch范围内的坝址，以确定传统的地震反应设计标准是否足够。这项研究是国家减少地震灾害计划的一部分。

This research is to define by gravity and active seismic refraction methods the subsurface structure of the Salt Lake Valley, Utah, model the resulting structure in a 3-D finite element code for response to earthquake waves, and compare the result with recorded data from earthquakes. The research is expected to provide a new understanding of the competing interactions among the effects of attenuation, topographic scattering, basin resonance, body-to-surface wave conversion at basin boundaries, and coda enhancement. The topographic scattering results will be applied to dam sites in the Wasatch Range, Utah, to determine if conventional earthquake response design criteria are adequate. This research is a component of the National Earthquake Hazard Reduction Program.