A review of noise suppression methods for marine controlled source electromagnetic signals
LI Suyi1, ZHANG Yi1, ZHANG Jikun1, SHEN Chun2
1. College of Instrumentation and Electrical Engineering, Jilin University, Changchun, Jilin 130061, China; 2. College of Computer Science and Technology, Jilin University, Changchun, Jilin 130012, China
Abstract：The marine controlled source electromagnetic (MCSEM) method is an emerging marine geophy-sical exploration method for detecting mineral resources such as submarine oil and natural gas reservoirs.In the complex marine environment,signals are very susceptible to interferences from various noises,which affects data inversion and interpretation.This paper first introduces the principle of MCSEM and key data preprocessing methods,then summarizes the methods for suppressing random noise,‘air wave’ noise and seafloor currents,and finally analyzes the future direction on how to denoise MCSEM data.
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