Undergraduate Research Experience (REU), NHERI 2021: Ground Motion Intensity Estimation Algorithm for Earthquake-Induced Soil Liquefaction Sites

This project proposes an algorithm that utilizes data from the Next Generation Liquefaction Database to create geospatial meshes of ground motion intensity, and to determine intensities at sites where earthquake-induced liquefaction has been observed. This project applies a combined modeling and data-driven approach to determine residuals or model deviance from true recorded intensity measure values at recording stations. Going forward, this project serves to provide the geotechnical engineering community with a new technique for more consistent ground motion estimations at liquefaction sites.

本项目提出一种算法，依托下一代液化数据库（Next Generation Liquefaction Database）的数据生成地震动强度的地理空间网格，并确定已观测到地震诱发液化场地的地震动强度值。本项目采用建模与数据驱动相结合的方法，计算台站处真实记录的强度度量值对应的残差与模型偏差。本项目旨在为岩土工程学界提供一项新技术，以实现液化场地地震动强度的更一致可靠估算。