- By Shibra Arshad
- Tue, 03 Feb 2026 10:02 PM (IST)
- Source:JND
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It is estimated that an earthquake occurs on Earth every 30 seconds; the majority of them are not felt due to their weak magnitude.
A magnitude 4.0 earthquake releases energy roughly equivalent to the detonation of about 15 tons of TNT, according to standard seismological conversions, though some reports cite around 6 tons for similar low magnitudes, depending on the exact scale and calculation method.
The Richter scale (and modern equivalents like the moment magnitude scale) is logarithmic in base-10, meaning each whole-number increase represents a roughly 31.6-fold jump in released energy (not 10-fold, as that's only for amplitude).
