三维起伏地形下回折波快速走时层析及其静校正应用

杨华臣, 葛大明, 王忠成, 王磊, 袁永祺

Fast first-arrival traveltime tomography of diving waves under rugged surface and its application to static correction

YANG Hua-Chen, GE Da-Ming, WANG Zhong-Cheng, WANG Lei, YUAN Yong-Qi

图8 静校正处理后的第75条CMP线叠加剖面 a—未做静校正的叠加剖面;b—高程校正后的叠加剖面;c—基于水平地表假设的初至走时层析速度模型进行长波长静校正后的叠加剖面;d—菲涅尔体初至走时层析速度模型进行长波长静校正后的叠加剖面;e—本文方法建立的速度模型进行长波长静校正后的叠加剖面

Fig.8 The stacked profiles of the 75th CMP line a—the stack profile without static correction;b—the stack profile with elevation correction;c—the stack profiles with long-wavelength static correction using the model inverted by the first-arrival traveltime inversion based on horizontal observation surface;d—the stack profiles with long-wavelength static correction using the model inverted by the Fresnel first-arrival traveltime tomography;e—the stack profiles with long-wavelength static correction using the model inverted by the proposed method