应用地球物理（英文版）
應用地毬物理（英文版）
응용지구물리（영문판）
APPLIED GEOPHYSICS
2010年
2期
158-165
,共8页
李国发%曹明强%陈浩林%倪成洲
李國髮%曹明彊%陳浩林%倪成洲
리국발%조명강%진호림%예성주
heat transfer%port throttling%fluid viscosity%marine exploration%air gun signature
Based on analyzing the limit of Ziolkowski's bubble oscillation formulation,a new model with various physical factors is established to simulate air gun signatures for marine seismic exploration.The practical effects of physical factors,such as heat transfer across the bubble wall,air gun port throttling,vertical rise of the bubble,fluid viscosity,and the existence of the air gun body were all taken into account in the new model.Compared with Ziolkowski's model,the signatures simulated by the new model,with small peak amplitude and rapid decay of bubble oscillation,are more consistent with actual signatures.The experiment analysis indicates:(1)gun port throttling controls the peak amplitude of air gun pulse;(2)since the hydrostatic pressure decreases when the bubble rises,the bubble oscillation period changes;(3)heat transfer and fluid viscosity are the main factors that explain the bubble oscillation damping.
