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Study of modulation parameters of galactic cosmic rays based on the three dimensional anisotropy

We study behavior of the three dimensional (3-D) anisotropy of galactic cosmic rays in the minimum epochs of solar activity for different polarity periods of solar magnetic cycle. We also analyze long-period variations of the radial Ar and longitudinal Aφ components of the GCR anisotropy for the period of 1970-2005. We use for analysis data of the 3-D GCR anisotropy found by IZMIRAN’s group. Solving the convection-diffusion flux equation using three dimensional anisotropy of galactic cosmic rays we estimate the ratios II K K and II d K K of the perpendicular K and drift d K diffusion coefficients to the parallel II K diffusion coefficient. Also based on some additional assumptions we deduce heliolatitudinal galactic cosmic ray intensity gradient. Calculations are performed for different polarities of Sun’s global magnetic field and for sector structure.