6e - Additional PSHA topics

In this video, we explore various aspects of Probabilistic Seismic Hazard Analysis (PSHA) calculations that didn't fit neatly into our previous categories. Topics include different formulations of PSHA equations, highlighting comparisons between historical and modern methods. We discuss the evolution from Allin Cornell's 1968 paper to contemporary formulations involving discrete distributions and additional predictive variables.

We introduce tools such as the OpenSHA hazard curve application and USGS resources for obtaining ground motion hazard data.

We also provide an explanation of logarithmic interpolation, which is essential for estimating spectral acceleration values corresponding to specific exceedance rates.

00:00 Introduction to Miscellaneous PSHA Topics
00:00 Introduction
00:12 Other Formulations of PSHA Calculations
05:31 Tools for Ground Motion Hazard Curves
07:06 Interpreting Hazard Curve Data
09:52 IM Value with a Given Exceedance Rate
12:03 Log-Log Interpolation
18:12 Conclusion

This video is based on material from the book “Seismic Hazard and Risk Analysis” by Jack Baker, Brendon Bradley, and Peter Stafford (Cambridge University Press, 2021).