Omori's law of aftershocks
Ley de Omori de las réplicas
- Date
- 1894 · confidence high
- Place
- Imperial University, Tokyo, Japan
- Credited to
- Ōmori Fusakichi
- People
- 👤 Fusakichi Omori1868–1923
- Field
- Cosmos & Earth
What was discovered
An empirical law by which the number of aftershocks decays roughly with the inverse of time after a large earthquake. It remains the basis of aftershock forecasting.
Formulated from the 1891 Nōbi earthquake.
What it led to
- statistical aftershock forecasting
- the Omori-Utsu law (1961)