Using the Hazard Viewer to Compute a Forecast
The Nepal earthquake struck in a region with poorly constructed buildings, susceptible to major damage and destruction. Here I show an illustration of how to use the Hazards Viewer to obtain a forecast.
The first step is to navigate to the viewer, then use either the circle selection radio button (shown) or the polygon selection tool. Once the radio button is clicked, a dialog box appears and the radius of the desired circle can be entered. Clicking "Enter" enables the circle to appear. The yellow crosses can be used to resize or move the circle. The actual forecast numbers are show at the lower left.
To see how the earthquake probabilities (forecast) has changed with time, click the "Forecast Timeseries" radio button (bar) at the left.
You can see that the earthquake probabilities have been gradually increasing with time, until today's devastating earthquake occurred, shown at the far right.
About OpenHazards Bloggers
Steven Ward is a Research Geophysicist at the Institute of Geophysics and Planetary Physics, UC Santa Cruz. He specializes in the quantification and simulation of natural hazards. Read Steve's blog.
John Rundle is a Distinguished Professor of Physics and Geology at UC Davis and the Executive Director of the APEC Collaboration for Earthquake Simulations. He chaired the Board of Advisors for the Southern California Earthquake Center from 1994 to 1996. Read John's blog.
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