Physics of auroral phenomena : proceedings of the 38th annual seminar, Apatity, 2-6 march, 2015 / [ed. board: A. G. Yahnin, N. V. Semenova]. - Апатиты : Издательство Кольского научного центра РАН, 2015. - 189 с. : ил., табл.

Diamagnetizm ofplasma andformation o flocal decreases o f the magneticfields near the equatorialplane Existence of local magnetic holes and humps is important not only for the clarification of the mechanism of substorm expansion phase onset. Myagkova et al. [2010] show that local increases of fluxes of energetic electrons can be quasistationary observed to the pole of the outer electron radiation belt and suggested that the observed increases can be connected with the formation of local magnetic traps. Particle trajectories at the equatorial plane in such traps do not surround the Earth. Antonova et al. [2011] show that not surrounding the Earth contours 5z=const appear in Mead and Faierfield and different versions of Tsyganenko models. Riazantseva et al. [2012] demonstrate the location of quasistationary increases of energetic electrons at the latitudes of the auroral oval. Vovchenko and Antonova [2014] show that hole/hump effect appears in the process of the modeling of the dipole magnetic field distortion by azimuthally asummetric plasma pressure and explained the formation of local plasma traps at the latitudes of the auroral oval. All such results show the real perspectives of the analysis of quasiequilibrium plasma pressure configurations in the magnetosphere of the Earth. However such analysis is only on the first stages of its development. Acknow ledgments .Authors are greatly thankful for the possibility to use data of AMPTE/CCE from the site ftp://spdf.gsfc.nasa.gov/pub/data/ampte/cce/CHEM/. The work is supported by RFBR grants 15-05-04965, 13-05-00233, by the Ministry of the education and science of Russian Federation (contract RFMEFI60414X0127) and by the program No 16 of the Presidium of RAS. References Akasofu, S.I., and S. Chapman, Solar-terrestrial physics, Oxford at the Clarendon press, 1972. Antonova, E.E., I.M. Myagkova, M.V. 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