20070514 Cai Xiling (China University of Geosciences, Beijing 100083, China); Liu Xuewei Characteristics Analysis on High Density Spatial Sampling Seismic Data (Applied Geophysics, ISSN1672-7975, CN11-5212/O, 3(1), 2006, p.48-54, 5 illus., 9 refs.) Key words: seismic exploration