Identification method of stochastic nonlinear dynamics using dynamical phase analysis—application to Forsmark data

We have proposed a new method to identify stochastic nonlinear dynamics of neutron fluctuation with “dynamical phase analysis (DPA)”. Availability of the method DPA is demonstrated with the use of neutron noise data from Forsmark. Also, the features of competing spatial global and regional modes in Forsmark data are discussed physically from the identified stochastic nonlinear model.