1:45 PM - 2:00 PM
[STT46-01] A bad inversion result suggests bad modeling
Keywords:Inversion analysis, ABIC, slip distribution of earthquakes
In inversion analyses using ABIC, we do not manually adjust the relative weight. Hence, geophysically unrealistic results are quite easily obtained. Because of that, someone may think that inversion analyses using ABIC is difficult in dealing with or even unreliable. However, this is an excellent point of ABIC. If we obtain a geophysically unrealistic result, this implies that some problems are hidden in this analysis.
In this talk, we show some examples of the invention of inversion methods inspired by ABIC, including the discovery of the importance of modeling errors. As shown by these examples, we can get closer to the true solution not by manually adjusting the relative weight to obtain a seemingly good-looking result, but by determining the relative weight statistically. It is a harder way to determine the relative weight statistically, but we should pursue this way to understand geophysical problems more appropriately.