Automated method for calculating the DST-index based on the wavelet model of geomagnetic field variations

A method for calculating the geomagnetic activity index Dst ( Dst -index) based on a wavelet model of geomagnetic field variations is proposed. The method allows values of the Dst -index to be automatically obtained with a 1-minute resolution. The method is tested using data from equatorial stations [1]. The paper describes a calculation algorithm and presents estimation results. The calculation results are compared with the classical approach and the Kyoto method [2]. It is shown that the proposed method allows values of the Dst index to be obtained in the on-line mode with an admissible error.