Bernoulli process with 282 ky periodicity is detected in the R-N   reversals of the earth's magnetic field
  Investigating the polarity time scales for the last 118 My a Bernoulli process with p=0.5 overriding with a Gaussian noise have been detected for the R-N magnetic reversals. The Bernoulli trials are separated by 282 ky. The frequency of the Bernoulli process correlates to planetary cycles and consistent with an impact triggered global cooling mechanism. The detected pattern allows calculating the probability of an upcoming R-N reversal between any time intervals. 
Jozsef Garai