= Jeanne L. Hardebeck
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<Jeanne L. Hardebeck> coauthored a <focal mechanism> method that propagates uncertainty in first-motion polarity, source position and seismic structure. Synthetic tests and closely spaced earthquake groups provide checks on the inferred solutions.<A New Method for Determining First-Motion Focal Mechanisms by Jeanne L. Hardebeck and Peter M. Shearer>[Abstract: uncertainty representation and validation]{ref}
The method matters for stress studies because a sharply fitted mechanism can still change substantially when an assumed ray path changes.
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