資源開発技術

[3508] 全波形逆解析における新しい初期モデル構築手法の提案

^○Ehsan Jamali HONDORI¹, 三ケ田均², 淺川栄一¹, 溝畑茂治¹ (1.株式会社地球科学総合研究所, 2.京都大学大学院)

司会:羽柴公博(東京大学)

キーワード：全波形逆解析, 地震探査, 初期モデル

Full Waveform Inversion (FWI) of seismic data has been applied for a high resolution subsurface imaging. Although this method provides accurate imaging result with higher resolution comparing to the traditional ones, FWI requires either a good initial model or low frequency data for the convergence to the global solution. In this study, we suggest a novel method for extracting the initial model from conventional seismic data processing flows and well log data. Numerical experiments show that our strategy has a potential to avoid cycle skipping problem.