NOPR Collection:http://nopr.niscpr.res.in/handle/123456789/373852026-10-10T19:11:32Z2026-10-10T19:11:32ZRelation between Disturbed Variations of Hydroxyl Emission & Radio Wave Absorption in D RegionRapoport, Z. Ts.Shefov, N. N.http://nopr.niscpr.res.in/handle/123456789/378382016-11-29T08:54:48Z1974-09-01T00:00:00ZTitle: Relation between Disturbed Variations of Hydroxyl Emission & Radio Wave Absorption in D Region
Authors: Rapoport, Z. Ts.; Shefov, N. N.
Abstract: The variations of hydroxyl emission and radio wave absorption after geomagnetic storms in middle latitudes are observed to be similar. A correlation between these values is noted.
Page(s): 314-3161974-09-01T00:00:00ZLunar Tidal Variations of Hydroxyl EmissionShefov, N. N.http://nopr.niscpr.res.in/handle/123456789/378372016-11-29T08:53:23Z1974-09-01T00:00:00ZTitle: Lunar Tidal Variations of Hydroxyl Emission
Authors: Shefov, N. N.
Abstract: The intensities and rotational temperatures of upper atmospheric hydroxyl emission have regular variations with a period of the moon's age. The values of Δ<i>I/I,</i> Δ<i>T<sub>rot</sub>/T<sub>rot</sub> </i> and Δ<i>T<sub>vibr.</sub>/T<sub>vibr.</sub> </i> Show variations with the moon's age and have a maximum of 30% in the case of intensity, 6% in the case of rotational temperature and 15% in the case of vibrational temperature for the mean annual lunar variations.
Page(s): 313-3141974-09-01T00:00:00ZSolar Flare Emissions & Geophysical DisturbancesSakurai, Kunitomohttp://nopr.niscpr.res.in/handle/123456789/378362016-11-29T08:50:03Z1974-09-01T00:00:00ZTitle: Solar Flare Emissions & Geophysical Disturbances
Authors: Sakurai, Kunitomo
Abstract: Various geophysical phenomena are produced by both wave and particle emission from solar flares. In understanding these phenomena, it is necessary to investigate the nature of these emissions and solar flare phenomena. Using the observed data for these emissions, a review is given on the nature of solar flares and their development. Geophysical phenomena are discussed by referring to the results for solar flare phenomena.
Page(s): 289-3121974-09-01T00:00:00ZHydrogen & Oxygen Ion Densities & Fluxes In Low & Midlatitude Topside IonosphereRao, B. C. NarasingaJain, V. C.http://nopr.niscpr.res.in/handle/123456789/378352016-11-29T08:48:57Z1974-09-01T00:00:00ZTitle: Hydrogen & Oxygen Ion Densities & Fluxes In Low & Midlatitude Topside Ionosphere
Authors: Rao, B. C. Narasinga; Jain, V. C.
Abstract: The daytime altitudinal variation of ion diffusion flaxes and their influence on H<sup>+</sup> and O<sup>+</sup> densities in the topside ionosphere in the low and midlatitudes are investigated theoretically, taking into account the ionosphere protonosphere coupling. The H<sup>+</sup> density is considered to be in chemical equilibrium at altitudes below 600 km and in dynamical equilibrium at altitudes above 600 km. Using the observed 0<sup>+</sup> ion densities, recently derived neutral hydrogen densities, and electron and ion temperature profiles, the transport fluxes of O<sup>+</sup> and H<sup>+</sup> ions are evaluated taking into consideration the geomagnetic field geometry. It has been shown that the relative sizes of the magnetospheric field tubes in the low and midlatitudes control the density variation in the topside ionosphere and produce lower proton densities in the midlatitudes compared to low latitudes. Also, the diffusive equilibrium profiles differ considerably from the dynamical equilibrium profiles.
Page(s): 284-2881974-09-01T00:00:00Z