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11.
Ts.N. Gogosheva V.N. Grigorieva Ts.T. Evgenieva B.D. Mendeva N.I. Kolev D.G. Krastev B.H. Petkov 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》2009
This presentation deals with the recent investigations of the dynamics of the total ozone content (TOC) and of the lower troposphere ozone over Bulgaria, South-Eastern Europe. 相似文献
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Ts.P. Dachev K.B. Serafimov A. Bochev I.S. Kutiev I.G. Rumchev Yu.N. Matviichuk G.R. Carignan 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》1985,5(4):293-297
This paper reports the results of the first direct comparison of near simultaneous measurements obtained by the INTERCOSMOS-BULGARIA-1300 and the DYNAMICS EXPLORER-B satellites. The ICB-1300 is in a near circular orbit at a mean height of about 850 km. The DE-B satellite in an elliptical orbit is sometimes directly below the ICB-1300 satellite providing an opportunity to investigate the response of the thermosphere to particle fluxes from the magnetosphere. Energy fluxes in the range 0.2–15 keV are obtained from an energetic particle analyzer on board the ICB-1300 satellite. The thermospheric composition and density are obtained by a neutral gas mass spectrometer (NACS) on the DE-B satellite. During the period 20 August–20 November, 1981, observations show tht the times and locations of maxima in magnetospheric energy deposition coincide with regions of maximum thermospheric upwelling characterized by composition changes. 相似文献
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I. Ivanov Ts. Dachev Yu. Matviichuk D. Krezhova D. Gochev I. Rumchev 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》1982,2(7):93-95
On December 21-st, 1981, at 18.35 hours UT from the territory of the USSR (coordinates - 49°N/L 2/) in implementation of scientific objectives and in accordance with the ‘INTERCOSMOS’ Programme, there was launched the heavy geophysical rocket ‘VERTICAL-10’. The scientific payload included a low-energy two-channel spectrometer for measuring the differential flows of electrons and protons within the energy range 0.1 to 10 keV, covered by 15 exponentially distributed energy levels. 相似文献
15.
P. Velinov G. Nestorov Ch. Spasov Ts. Dachev Y. Tasev 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》1984,4(4):163-166
The effect of the proton flare of 22 November 1977 on the various levels in the middle atmosphere and the bottom-side ionosphere is studied in order to compare synchronous phenomena in the middle atmosphere with phenomena in upper regions and to investigate the response of middle atmosphere to the penetration of high energy solar particles and radiation. 相似文献
16.
M.M. Gogoshev G.M. Grechko K.B. Serafimov V.P. Rumin Ts.N. Gogosheva A.I. Simonov 《Acta Astronautica》1982,9(12):741-744
The results from the electrophotometric investigation of the equatorial and tropical ionospheric arcs on board the orbital station “Salyut-6”, carried out with Bulgarian photometer “Duga”, intended for measurements of the self-radiation of the Earth's upper atmosphere in the lines λ = 6300 Å, λ = 5577 Å, λ = 4278 Å and λ = 6563 Å, are analyzed. From the obtained results of the intensity of the measured emissions is established by calculation that the cause of these arcs is the plasma drift downwards, which leads to intensification of the dissociative recombination of the ions O2+ and of the radiative recombination of O+. 相似文献
17.
B.D. Mendeva M.M. Gogoshev I.D. Mendev Ts.N. Gogosheva K.B. Serafimov 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》1985,5(7):47-49
The optical complex of the satellite Interkosmos-Bulgaria-1300 includes the UV-spectrometer “Photon-1”, and the scanning spectrometer EMO-5 operating in the visible spectrum. Using the intensities of the OI 1356 and 6300 nm emission as measured by these two spectrometers, a theoretical evaluation of the two main F-layer parameters has been made: hmF, the height of the F2-maximum and NmF, the electron density at this height, together with the constant Ao characterizing the Ne(h) distribution in the IRI. The MSIS and CIRA-72 models are used for determining the distribution of the neutral component. If we had used CIRA-72, lower NmF values and higher hmF values had been obtained than with MSIS. The results obtained show that the method is very sensitive to the assumed neutral model, particularly when determining hmF. This work demonstrates the possibility of probing the F-region near its peak on a global scale using comperatively cheap and easily available optical methods. 相似文献