Seismic Hazard Articles

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Updates to Hazard Assessment App

Updates to Hazard Assessment App

A few new features have been added to the Hazard Assessment application, aiming to improve usability, understanding and investigation. The first addition is a chart in the Hazard Setup window to indicate the current date range settings. Usually the date range for...

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Background filters in the hazard app

Background filters in the hazard app

The new background filters have been added to the Hazard Assessment application. The time of day filter can be used to see the effect of removing events during blasting/shift change on the hazard results. You can either view the results in raw or normalised form. The...

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New b-value isosurfaces

New b-value isosurfaces

The isosurfaces for b-value have been upgraded in the latest root. There is now much more control over the isosurface levels. Up to 5 iso's can be plotted for user defined ranges. A linguistic name can be assigned to each level and displayed in the legend. A new video...

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Strong Ground Motion Relationship

Strong Ground Motion Relationship

The Strong Ground Motion (SGM) relationship is used to calculate the Peak Particle Velocity (PPV) generated by a seismic event. You may also hear this referred to as a Ground Motion Prediction Equation (GMPE), but only the maximum velocity is estimated, i.e. the...

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What do the Hazard Iso’s mean?

What do the Hazard Iso’s mean?

The Iso View in the Hazard Assessment application expresses the seismic hazard in two ways. The current yearly hazard within the chosen grid volume. This is shown in the footer of the 3D view, as the probability of an event exceeding the design magnitude. The spatial...

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