We'd like to use analytics cookies to understand which symbols people look up, so we know what to research next. They are not used for advertising and we set none of them unless you say yes. What we store.
A number on a logarithmic scale, subscripted by method.
Also known as: Moment magnitude, Richter scale
Earthquake magnitude is logarithmic: each whole step is about thirty-two times more energy. Several scales exist and are distinguished by a subscript, and the Richter scale specifically has not been the working scale for large earthquakes for decades.
States an earthquake's size on a logarithmic scale, each whole unit representing roughly thirty-two times the energy release.
Contexts: Technical drawing, Maps
Is measured by several different methods distinguished by subscript, with moment magnitude used for large events rather than the Richter scale it superseded.
Contexts: Technical drawing, Maps
Is distinct from intensity, which measures shaking at a place and takes a different value at every location for one earthquake.
Contexts: Technical drawing, Maps
A capital M with a small subscript letter, followed by a numeral with one decimal place.