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NEAR SURFACE LOW VELOCITY ZONE INVERSION

Pei Jiangyun; Wu Yonggang; Liu Yingjie(Instltute of Expleration and DcoelOpmenl,Daqing Petroleum administrative Bareau,Daqing City,163712)  
Seismic exploration techniques are increasingly developed. Some regularnoise wave is gradually used as useful message. Rayleigh surface wave propogatingcharacter in near surface is used to iteratively inverse near surface low velocitv zoiiethickness and velocity by mininum damping squares mdethod.The compultational resultsof real example in two areas of Daqing say that this algorithm is stable and is applicableto near suface inversion
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