noun
Richter scale
Refers to the scale for measuring earthquake magnitude. Often used in news or scientific contexts.
その地震はリヒタースケールでマグニチュード7.0を記録した。
The earthquake registered a magnitude of 7.0 on the Richter scale.
Variant spelling with a middle dot; less common but still seen.
マグニチュード is the general term for earthquake magnitude, while リヒタースケール specifically refers to the Richter scale, a particular magnitude scale.
Borrowed from English 'Richter scale', named after seismologist Charles Richter.