Derived products are also proposed, such as cities and population exposure maps (Figures 3 and 4).īased on the concept of “ShakeMap,” originally developed by the US Geological Survey (USGS), these maps are useful tools to assess the extent and the severity of felt shaking by population and the distribution of damage produced by moderate to large seismic events.Įarthquake ground motion scenarios computed from Quantectum earthquake forecasts and prognosis are also provided to anticipate better and mitigate potential future earthquakes. In the process, we consider different approaches for shallow crustal earthquakes and subduction earthquakes. In Quantectum, maps of Peak Ground Motions and intensities are automatically generated a few minutes after the occurrence of earthquakes worldwide having a moment magnitude of 5.5 (Figure 2). It's like a scale that tells us how people perceive the shaking, what happens to objects, and how buildings might get damaged. Macroseismic intensity is a way to describe how strong an earthquake feels in a more human-friendly way. These GMPE equations are based on past earthquake data. These are Peak Ground Acceleration (PGA), Peak Ground Velocity (PGV), and E lastic R esponse S pectra in A cceleration. In practice, when we know details about an earthquake, like where it occurred, how big it was, and how it moved, we use special equations called "Empirical Ground Motion Prediction Equations" (GMPEs) to figure out values of earthquake ground motion parameters of engineering interest, i. This process is essential because a fundamental aspect of seismic hazard and risk assessment revolves around estimating the anticipated earthquake ground motion and level of shaking intensity associated with significant earthquakes. These maps play a crucial role in evaluating seismic hazards and risk by transforming earthquake data into actionable insights, such as creating exposure maps for urban areas and populations. At Quantectum, we generate maps illustrating global earthquake ground motion and shaking intensity of earthquakes with a magnitude of 5.5 and above.
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