Elastic full-waveform inversion of multicomponent ocean-bottom data in the Moere Vest Basin, offshore Norway

Abstract

The extension of full waveform inversion (FWI) into elastic models can potentially address the limitations of acoustic FWI due to amplitude versus offset effects. We present results of applying an elastic FWI workflow to multicomponent ocean-bottom nodes data. We show the steps used to pre-process the data and discuss a strategy for creating initial elastic models for inversion. Finally, we apply our inversion workflow and show results for frequencies up to 10 Hz. Results show inverted elastic models for Vp, Vs and density, the potential of extracting a Vp-Vs ratio from such inversions and elastic reverse time migration images for each parameter. Presentation Date: Tuesday, October 16, 2018 Start Time: 8:30:00 AM Location: 207C (Anaheim Convention Center) Presentation Type: Oral