A Method for Reducing Ocean Wave-Induced Magnetic Noises in Shallow-Water MT Data Using a Complex Adaptive Filter

作     者：WU Yunju LUO Ming LI Yuguo GE Jiaqi PAN Lindong WU Yunju;LUO Ming;LI Yuguo;GE Jiaqi;PAN Lindong

作者机构：College of Marine Geoscienceand Key Laboratory of Submarine Geosciences and Prospecting TechniquesMinistry of EducationOcean University of ChinaQingdao 266100China Evaluation and Detection Technology Laboratory of Marine Mineral ResourcesQingdao National Laboratory for Marine Science and TechnologyQingdao 266237China 

出 版 物：《Journal of Ocean University of China》 (中国海洋大学学报（英文版）)

年 卷 期：2023年第22卷第1期

页      面：99-106页

核心收录：

学科分类：08[工学] 0707[理学-海洋科学] 0816[工学-测绘科学与技术] 

基　　金：supported by the National Natural Science Foundation of China(Nos.91958210 and 41904075)。 

主　　题：shallow-water areas wave-induced magnetic noises complex adaptive filter MT data processing 

摘      要：In shallow-water areas,the marine magnetotelluric(MT)method faces a challenge in the investigation of seabed conductivity structures due to electrical and magnetic noises induced by ocean waves,which seriously contaminate MT data.Ocean waves can affect electric and magnetic fields to different extents.In general,their influence on magnetic fields is considerably greater than that on electric fields.In this paper,a complex adaptive filter is adopted to reduce wave-induced magnetic noises in the frequency domain.The processing results of synthetic and measured MT data indicate that the proposed method can effectively reduce wave-induced magnetic noises and provide reliable apparent resistivity and phase data.