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Vol. 1 (1998 year), No. 2
Namgaladze A.A., Martynenko O.V., Volkov M.A., Namgaladze A.N., Yurik R.Yu.
High-latitude version of the global numerical model of the Earth's upper atmosphere
The global numerical model describing the thermosphere, ionosphere and protonosphere of the Earth as a single system has been modified for the polar upper atmosphere studies. The spatial and time resolution of the model has been significantly enhanced by the use of the variable latitudinal steps of numerical integration. The model is being developed to encompass modelling of the inner part of the magnetosphere confined by the closed geomagnetic field lines and the mesosphere. The results of the model calculations for the quiet magnetic conditions have been compared with the data of the empirical ionospheric and thermospheric models as well as with the EISCAT data and, in general, reasonable agreement between theoretical and empirical data has been found. The new high-latitude version of the model has been applied as well to the investigations of the disturbed behaviour of the Earth’s upper atmosphere during geomagnetic substorms and storms and during disturbances in the cusp region. The physical mechanisms of the upper atmosphere responses to the solar wind and magnetospheric forcings have been understood by the use of the model in several case studies.
(in English, стр.62, fig. 44, tables. 0, ref 145, MS Word 95, MS Word 95 956 Kb)
Vol. 2 (1999 year), No. 1
Martynenko O.V.
Psychology of gifted children. From experience of work with pupils of Murmansk Polytechnical Lyceum
In the paper the problem of school teacher scientific guiding of the pupil, and also psychological aspects of interaction of the pupil and teacher during realization of scientific research work are considered. The recommendations for the teacher are given.
(in Russian, стр.4, fig. 0, tables. 0, ref 8, MS Word 95, MS Word 95 12 Kb)
Vol. 12 (2009 year), No. 2
Namgaladze A.A., Zolotov O.V., Zakharenkova I.E., Shagimuratov I.I., Martynenko O.V.
Ionospheric total electron content variations observed before earthquakes: Possible physical mechanism and modeling
Some experiments have been carried out by phase association and infrasonic sources location using the Apatity infrasound array and Finnish-Swedish acoustic network. Several events from the area of Plesetsk spaceport have been detected and located. The analysis of variation of backazimuth estimations has been done basing on signals from repeating military explosion in Northern Finland. Estimations of the location accuracy for the explosions have been obtained. It has been confirmed that cause-effect relation exists between facts of presence or absence of infrasonic wave first arrivals and weather conditions.
(in English, стр.8, fig. 6, tables. 0, ref 29, Adobe PDF, Adobe PDF 0 Kb)
Vol. 13 (2010 year), No. 3
Martynenko O.V., Gladkikh M.M., Artamonov I.V.
Object-oriented hierarchical data structure for Framework Atmospheric Model
The history matching problem in connection to an effective reservoir model concept is defined as a multi-well data inversion problem for a class of process-driven deterministic reservoir models. A two-stage strategy of the production data inversion has been introduced and considered in detail. The strategy includes parametrical upscaling as a pre-processing part and model calibration as a final part. The computer aided approach has been recommended for the parametrical upscaling. It is based on combination of standard step-wise local optimization techniques and active expert-user interface. The fully automatic approach is suggested for the model calibration process. The relevant data inversion algorithm is developed, which combine multi-start strategies (Evolution and Simulated Annealing) with the multi-start mode of a gradient method. The pilot computer programs are created and tested on 2D testbed and on multidimensional synthetic prototypes of a real history matching problem. The results are analyzed based on set of parametrical upscaling and calibration sessions.
(in English, стр.4, fig. 2, tables. 0, ref 6, Adobe PDF, Adobe PDF 0 Kb)
Vol. 13 (2010 year), No. 4
Martynenko O.V., Botova M.G.
Peculiarities of diffusion formation of the plasmasphere spatial structure: Completely symmetrical statement of the problem
The formation of the plasmasphere has been simulated by the numerical simulation method under the influence only of ionization/recombination, charge exchange reactions and field-aligned diffusion of ions O+ and H+ in a completely symmetrical 3D statement of the problem: coincided of magnetic and geographic axes for the moment of the equinox. As a result, we have got realistic enough 3D distribution of the plasma density and composition with a number of large-scale structural features: 3 night-time ionosphere electron density maxima – sub-auroral, mid-latitudinal and near-equatorial, and the corresponding peaks of ion O+ density in the outer plasmasphere and ion H+ density in the mid-latitudinal plasmasphere. The physical mechanisms of these features formation have been explained. It has been shown that together with geometry of the magnetic field determinative contribution to the formation of these features gives the spatial heterogeneity of Ti.
(in Russian, стр.8, fig. 8, tables. 0, ref 15, Adobe PDF, Adobe PDF 0 Kb)
Vol. 14 (2011 year), No. 3
Botova M.G., Martynenko O.V., Namgaladze A.A.
Numerical modeling of the ion temperature influence
The formation of three-dimensional structure of the "plasmasphere – ionosphere" system under the influence of ionization / recombination, charge exchange reactions and field-aligned (along the geomagnetic field lines) diffusion of ions O+ and H+ has been investigated by the numerical simulation method using the global upper atmosphere model (UAM). A few large-scale structural features: 3 night-time ionospheric electron density maxima – sub-auroral, mid-latitudinal and near-equatorial, and corresponding peaks of n(O+) in the outer plasmasphere and n(H+) in the mid-latitudinal plasmasphere have been obtained. The geometry of the geomagnetic field and the spatial non-homogeneity of the ion temperature give a determinative contribution to the formation of these features.
(in Russian, стр.6, fig. 1, tables. 0, ref 17, Adobe PDF, Adobe PDF 0 Kb)