Using the Morris sensitivity analysis method to assess the importance of input variables on time-reversal imaging of seismic sources

• Published in: Acta geophysica Vol. 67; no. 6; pp. 1525 - 1533
• Main Author: Franczyk, Anna
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 01-12-2019; Springer Nature B.V
• Subjects: Earth and Environmental Science; Earth Sciences; Elastic waves; Geophysics/Geodesy; Geotechnical Engineering & Applied Earth Sciences; Imaging; Mathematical models; Parameters; Research Article - Applied Geophysics; Seismic activity; Seismic wave propagation; Seismic waves; Sensitivity analysis; Structural Geology; Visualization; Wave equations; Wave propagation; Time-reversal imaging; Seismic source location; Sensitivity analysis
• ISSN: 1895-6572; 1895-7455
• DOI: 10.1007/s11600-019-00356-5

The time-reversal imaging method has become a standard technique for seismic source location using both acoustic and elastic wave equations. Although there are many studies on the determination of the relevant parameter for visualization of the time-reversal method, little has been done so far to investigate the accuracy of seismic source location depending on parameters such as the geometry of the seismic network or underestimation of the velocity model. This paper investigates the importance of the accuracy of seismic source location using the time-reversal imaging method of input variables such as seismic network geometry and the assumed geological model. For efficient visualization of seismic wave propagation and interference, peak-to-average power ratio was used. Identification of the importance of variables used in seismic source location was obtained using the Morris elementary effect method, which is a global sensitivity analysis method.