abnormal events | Energy Glossary

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abnormal events

1. n. [Geophysics]

A term to indicate features in seismic data other than reflections, including events such as diffractions, multiples, refractions, and surface waves.

Although the term suggests that such events are not common, they often occur in seismic data.

See: diffractioneventmultiple reflectionreflectionrefractionsurface wave