Nomogram to help explain probabilistic seismic hazard
DouglasJohn
2019
Nomogram summarising the results of simple probabilistic seismic hazard assessments (PSHAs) for peak ground acceleration and elastic response spectral acceleration for a structural period of 1s and return periods from 100 to 2500 years, where the effects of the activity rate and the slope of the Gutenberg-Richter relation are captured.<div><br></div><div>To read the nomogram, connect two of the variables (e.g. <em>N</em>(<em>M</em>0 = 4.5) and return period) with a straight line and where it crosses the axis for the third variable that is its value (e.g. PGA). Example calculations are shown using red lines for a return period of 475 years and an activity rate of <em>N</em>(<em>M</em>0 = 4.5) = 0.1 (a moderate seismicity zone).<br></div><div><br></div><div>It is a Type 10 nomogram drawn using the pynomo program.</div><div><br></div><div>For details see the Open Access article: <a href="https://link.springer.com/article/10.1007/s10950-019-09885-4">https://link.springer.com/article/10.1007/s10950-019-09885-4</a> where this nomogram is presented.</div><div><br></div><div>An alternate to this nomogram in the form of an Excel spreadsheet is also available on figshare. </div>