抄録
A new formula
logn=(1-M/Mx)
connecting the magnitude M and the number n of earthquakes is proposed, where
n0……number of earthquakes having a magnitude 0,
Mx……magnitude of the largest conceivable earthquake.
This formula represents observational facts very nicely. It involves only one constant log n0, in a contrast with the formula by GUTENBERG and RICHTER
logN=a+b(8-M)
which involves two. a and b in the above formula have beee found not to be quite independent.
The new formula implies that n(M) is equal to n0f(M), instead of being equal to n0·φ(M), as is usually taken for granted.
