Mitigating the Effects of Guided Waves in OBN Data for Acoustic FWI Using Data Reconstruction: A Data Example from the Yggdrasil Area

Ocean bottom node (OBN) data in a shallow water environment can be contaminated by near surface elastic effects such as guided waves. The presence of these waves may present a challenge for acoustic full waveform inversion (FWI) because modelling these guided waves accurately can be expensive and attempts to remove them can harm refractions. We present a method to mitigate the effects of the guided wave in shallow water OBN data in a computationally efficient manner. Application of this method for FWI to NOAKA OBN dataset from the Yggdrasil field in the North Sea is also presented.