Feasibility study of full waveform inversion of Love-SH waves for detecting small-scale shallow anomalies

Feasibility study of full waveform inversion of Love-SH waves for detecting small-scale shallow anomalies

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silver condenser tumble dryer In engineering surveys, conventional SH-wave seismic exploration methods exhibit limited resolution for detecting small-scale shallow anomalies, often failing to meet practical requirements.Seismic full waveform inversion (FWI), a high-resolution imaging technique, is based on waveform fitting and utilizes the complete waveform information of seismic records to invert subsurface medium parameters precisely.This study explores the feasibility of employing Love-SH wave FWI to enhance the detection of small-scale shallow anomalies.First, the theoretical methodology of SH-wave FWI is introduced, followed by the development of a theoretical model designed to assess its resolution ability for small-scale geological anomalies.

Theoretical analysis and numerical experiments indicate that the Love-SH wave FWI method demonstrates moen rothbury faucet strong resolution capabilities for small-scale anomalies near the surface, and compared to Rayleigh-PSV wave FWI, Love-SH wave FWI exhibits less parameter crosstalk and lower inversion nonlinearity, facilitating easier convergence to a global minimum.