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The Characteristics of Interference Wave and Its Attenuation Techniques in Northern Qaidam Basin

HU Jie1,2,3,XIA Bin1,HU Yang1,3,GUO Feng1,3,ZHANG Qian4(1.Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China;2.Exploration ProjectDepartment of PetroChina Qinghai Oilfield Company,Dunhuang 736202,China;3.Graduate School of Chinese Academyof Sciences,Beijing 100049,China;4.Pearl River Water Resources Scientific Research Institute,Guangzhou 510611,China)  
Due to the complex surface conditions and the impact of subsurface structure,there are many types of interference waves in the northern Qaidam basin.And signal/noise ratio of seismic data is low in foreland as well as in the top of structure.Through the comprehensive analysis of geological conditions and seismic data from Pingtai,Mahai and Lenghu regions in northern Qaidam basin,a deeper understanding of the type and parameter characteristics of interference wave has been made.With the result of analysis,corresponding method has been proposed to suppress these interference waves.This method will be helpful for noise attenuation more in northern Qiadam basin.
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