Project Abstract
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Both the science and engineering research communities work on applied science issues, but they tend to approach those from very different perspectives. On the science front, research tends to focus on better understanding the fault mechanics and the earthquake source processes, and to understand wave propagation over large regional scales. On the engineering front, the research is aimed at better understanding site and infrastructure response to ground motions, and to evaluate different design strategies. Both types of analyses are usually performed at different scales and lead to a gap in terms of the ground motions deliverable from science groups to engineering groups. In this project, we aim to further bridge this gap as it applies to end-to-end (or rupture to rafters) simulations. We use a concept called Domain Reduction Method (DRM) as a tool to improve the science-engineering ground motion interface. Toward the goal of enabling DRM calculations, we have implemented a new feature in AWP-ODC-GPU to efficiently save time series directly at arbitrarily pre-specified locations. Here, we provide a demonstration of this new capability, for the purpose of modeling soil-structure interaction, using a rectangular box surrounding a location in the Los Angeles area for the 2014 M5.1 La Habra, CA, earthquake. The size of the output box is 20 by 20 by 10 grid points, which corresponds 160 m by 160 m by 80 m. |
