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 

机构地区：[1]College of Marine Geoscience,and Key Laboratory of Submarine Geosciences and Prospecting Techniques,Ministry of Education,Ocean University of China,Qingdao 266100,China [2]Evaluation and Detection Technology Laboratory of Marine Mineral Resources,Qingdao National Laboratory for Marine Science and Technology,Qingdao 266237,China

出　　处：《Journal of Ocean University of China》2023年第1期99-106,共8页中国海洋大学学报（英文版）

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

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.

关 键 词：shallow-water areas wave-induced magnetic noises complex adaptive filter MT data processing 

分 类 号：P714.1[天文地球—海洋科学]