南方复杂山前带观测系统压噪研究  

Study on geometry noise suppression at the complex piedmont zone in south China

作　　者：彭代平[1] 邓飞[2] 常鉴[1] 肖云飞[1] 

机构地区：[1]中国石油化工股份有限公司石油物探技术研究院,南京211103 [2]成都理工大学信息科学与技术学院,成都610059

出　　处：《物探化探计算技术》2015年第5期639-643,共5页Computing Techniques For Geophysical and Geochemical Exploration

摘　　要：中国南方复杂山前带都具有复杂地表和复杂构造的双复杂特征,地震资料品质普遍差,单炮资料信噪比低。由于复杂的地表条件,野外很难实现检波器大基距组合来压制长波长相干噪声,室内也无法有效地去除来自侧面的次生干扰。通过观测系统叠加响应研究和实例分析认为,在南方山前带利用观测系统进行压噪是一种比较有利的方式,缩小接收线距和炮线距能有效地减少噪声泄露,从而达到压噪的目的。The piedmont zone in south China is featured by 'dual-complex characteristics' including complex surface conditions and complex structures.Therefore,the seismic data from this area always has poor quality and low S/N.Because of the complex surface conditions,it is hard to realize large array length in field to suppress the long-wavelength coherent noise,and cannot effectively remove the secondary interference side.By stack response research on geometry and application analysis,it is shown that geometry is an effective way for denoising.By this means,noise leakage can be effectively reduced by decreasing receiving distance and shooting distance to realize noise suppression.

关 键 词：复杂山前带 信噪比 检波器组合 观测系统 压噪 

分 类 号：P631.4[天文地球—地质矿产勘探]