Abstract
SUMMARYNumerous efforts have been made to accurately estimate Green's functions, which link observed seismic waves to physical source processes. Detailed a priori information is required for the theoretical Green's function calculated from a given velocity structure. In contrast, the empirical Green's function (EGF) obtained from seismograms of nearby earthquakes with similar focal mechanisms requires the occurrence of such appropriate events. To partially release these constraints, we propose radiation-corrected EGF by correcting the radiation patterns of the EGF seismograms. In this study, we performed synthetic tests to quantify the applicability of radiation correction, together with its limitations. Such tests are a useful approach to test a benchmark of EGF applicability. We then applied the new method to real earthquakes to validate the concept for practical use. The synthetic test and real applications confirmed the superiority of the radiation-corrected EGF over the conventional EGF in specific, but realistic, cases.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.