北京大学学报（自然科学版）2019，Vol.55Issue(5)：849-857,9.DOI:10.13209/j.0479-8023.2019.077
高铁地震 4D 地频图及其可用性研究
4D Ground Frequency Map: Concept and Application
摘要
Abstract
Based on the data from the array deployed by Peking University around high-speed rail in Baoding City, Hebei Province, China, in order to obtain spectra with higher signal to noise ratio at farther stations, the paper considers the variation of train type and stacks the spectra of three components of high-speed rail seismic signal produced by the same type trains on the same station. Using the clustering algorithm, the regular pattern of how the three component spectra vary with the train type and station position is obtained. Based on the characteristics of high-speed rail seismic spectra and their variation, we propose the concept of 4D ground-frequency map, and discuss its practicability in monitoring the status of high-speed rail and its surrounding media.关键词
高铁地震信号/ 4D地频图/ 聚类Key words
high-speed rail seismic signal/ 4D ground-frequency map/ clustering algorithm引用本文复制引用
蒋一然,梁萱,宁杰远,鲍铁钊,张献兵..高铁地震 4D 地频图及其可用性研究[J].北京大学学报（自然科学版）,2019,55(5):849-857,9.基金项目
国家自然科学基金(41874071)资助 （41874071）
