A numerical study of full waveform inversion (FWI) of seismic velocity structure was carried out by using synthetic ocean-bottom node (OBN) and vertical seismic profile (VSP) data. Based on an undulating seafloor modified from the commonly known Marmousi2 model, seismic forward modeling was performed to synthesize seismic P-wave data for the study. FWI experiments were performed using synthetic VSP, OBN and combined VSP + OBN data, separately, for the inversion of the velocity structure. The results show that the joint inversion of using the combined VSP + OBN synthetic data resulted in a very good velocity structure. Its accuracy is significantly higher than either using the VSP or OBN data alone. This suggests that the joint FWI using combined VSP + OBN data is a better image processing technique for the rugged seabed and complex structure below.

中文翻译：

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利用OBN和VSP合成地震资料研究崎sea海底地震速度结构的全波形反演。

利用合成海底节点（OBN）和垂直地震剖面（VSP）数据对地震速度结构的全波形反演（FWI）进行了数值研究。基于从众所周知的Marmousi2模型修改的起伏海底，进行地震正演模拟以合成地震P波数据以供研究。分别使用合成的VSP，OBN和组合的VSP + OBN数据进行FWI实验，以进行速度结构的反演。结果表明，使用VSP + OBN合成数据进行联合反演得到了很好的速度结构。它的准确性比单独使用VSP或OBN数据要高得多。这表明使用结合VSP + OBN数据的联合FWI对于崎below的海床和下面的复杂结构是一种更好的图像处理技术。