Equations 7 and 13 in this paper should have appeared as below.

Biographies for Jing-Bo Chen, Xin-Ping Chen, Chen Zhang, and Jianfeng Zhang should have appeared as below.

Jing-Bo Chen received a B.S. (1990) in mathematics from Heibei University, China, and a Ph.D. (2001) in computational mathematics from the Academy of Mathematics and Systems Sciences, Chinese Academy of Sciences. In 2001–2002, he was a postdoctoral fellow at the Institute of Theoretical Physics, Chinese Academy of Sciences. He is now a professor at the Institute of Geology and Geophysics, Chinese Academy of Sciences. His research interests include seismic numerical modeling, seismic...

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