Ground Motion Models

Ground motion models (GMMs) forecast the range of ground motions that may be observed conditioned on the occurrence of various earthquakes. Internally, every earthquake in a Forecast is parameterized as a GMM_Input, for which ground motions can be calculated. See the source javadocs for implementation details.

Ground Motion Model File Structure

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<GroundMotionModels>
  <ModelSet maxDistance="150.0">
    <Model name="BA_08" weight="0.3333"/>
    <Model name="CB_08" weight="0.3333"/>
    <Model name="CY_08" weight="0.3334"/>
  </ModelSet>
  <ModelSet maxDistance="300.0">
    <Model name="BA_08" weight="0.5"/>
    <Model name="CB_08" weight="0.5"/>
  </ModelSet>
</GroundMotionModels>

Matlab Access

One convenient way to access the models outside this platform is via Matlab. A sample script contains all the necessary instruction to get started.