Multiscale full-waveform inversion based on shot subsampling

• Published in: Applied geophysics Vol. 15; no. 2; pp. 261 - 270
• Main Authors: Shi, Cai-Wang, He, Bing-Shou
• Format: Journal Article
• Language: English
• Published: Beijing Chinese Geophysical Society 01.06.2018; Springer Nature B.V; Key Lab of Submarine Geosciences and Prospecting Techniques, Ministry of Education, Qingdao 266100, China; Evaluation and Detection Technology Laboratory of Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China; Ocean University of China, Qingdao 266100, China
• Subjects: Computational efficiency; Computer applications; Computing time; Crosstalk; Data; Earth and Environmental Science; Earth Sciences; Frequency domain analysis; Geophysics/Geodesy; Geotechnical Engineering & Applied Earth Sciences; Iterative methods; Mathematical models; Modelling; Noise; Robustness (mathematics); Waveform; shot subsampling; inversion; frequency

Conventional full-waveform inversion is computationally intensive because it considers all shots in each iteration. To tackle this, we establish the number of shots needed and propose multiscale inversion in the frequency domain while using only the shots that are positively correlated with frequenc...