Abstract：Currently,in seismic data field acquisition,we generally adopt the velocity of near-surface lower velocity layer V0 multiplying one fourth apparent cycle of dominant reflection frequency on the targets to compute the permissible value of elevation difference in a geophone array, even in deserts and on mountains. The paper demonstrated by theoretical computation and model tests that in areas developed strong secondary interferent waves and where the dominant frequency is not very high, we carry out construction by using velocity of subwe-athered zone V1 multiplying half-apparent cycle of dominant reflection frequency on the shallowest target to compute elevation difference in an array, which can get lower-frequency's section with higher S/N ratio that used for structural interpretation; on the contrary,if following the original rule of elevation difference in an array in this kind of areas, the S/N ratio on the seismic section may greatly be reduced by without effectively suppressing strong secondary interferent waves and original intension that attempts to reduce elevation difference in an array, protect high-frequency data and improve resolution can not be fulfilled.
魏继东, 李庆忠. 检波器组内高差对高频信息压制的理论分析[J]. 石油地球物理勘探, 2007, 42(5): 597-602.
Wei Ji-dong, Li Qing-zhong. Theoretical analysis on suppression of high-frequency information by elevation difference within geo phone array. OGP, 2007, 42(5): 597-602.
