APPLIED GEOPHYSICS     2024 21 (2):  358-371    ISSN: 1672-7975  CN: 11-5212/O Seismic Signal Analysis Based on Adaptive Variational Mode Decomposition for High-speed Rail Seismic Waves Lei Yang, Liu Lu, Bai Wen-lei, Feng Hai-xin, Wang Zhi-yang* 1. College of Information Science and Technology, Beijing University of Chemical Technology, Beijing, 100029, PRC 2. Aramco Beijing Research Center, Aramco Asia, Beijing, 100102, PRC 3. Key Laboratory of Petroleum Resources Research, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, PRC 4. Third Research Institute of China Electronics Technology Group Company, 100015, PRC Received: 2023-06-30  Revised: 2023-11-06  Online: null Supporting info