Using Natural Stable Hydrogen and Oxygen Isotopes for Studying the Conditions of Ground Ice Formation   总被引：1，自引：0，他引：1  

Brezgunov  V. S.  Derevyagin  A. Yu.  Chizhov  A. B. 《Water Resources》2001,28(6):604-608

The isotopic composition of ground ice in lacustrine deposits of different age in the Taimyr Peninsula is discussed. It is shown that the combined use of two isotopic indicators (²H and ¹⁸O) provides additional information (unavailable when any of the isotopes is used alone) about the conditions of formation of segregated ground ice.  相似文献   

Results from the Indo-USSR ozonesonde intercomparison experiment     

B. H. Subbaraya  K. S. Appu  K. P. Chatterjee  A. F. Chizhov  V. D. Grinchinkov  A. Jayaraman  G. A. Khokin  V. A. Kononkov  I. S. Moshnikov  V. Narayanan  S. P. Perov  O. V. Shtrikov  Y. V. Somayajulu  C. R. Sreedharan  K. S. Zalpuri 《Journal of Earth System Science》1987,96(1):25-40

A total of seventeen vertical profiles of ozone were obtained during an Indo-USSR collaborative experiment on ozonesonde intercomparison conducted at Thumba during March 1983. The vertical distribution of ozone was measured using rocket-borne, balloon-borne as well as ground-based instruments. Four different rocket ozonesondes from India and USSR and the balloon ozonesonde were used to makein situ observations of ozone concentrations in addition to the Dobson spectrophotometric observations of total ozone and Umkehr. The rocket and the balloon launchings were effected in three salvos and measurements were made at different times of the day as well as during night. The results of all these measurements are used to obtain a mean ozone vertical distribution over Thumba foT the spring equinoxial period. The mean profile shows the maximum ozone concentration at 27 km with a value of (3.86±0-52)×10¹² molecules per cc. Comparison of this mean profile with available satellite data for the equatorial regions shows that, in general, the Thumba values are lower by 10–15% at altitudes below 40 km and larger at altitudes above 50 km compared to the satellite results. The data also show evidence for a day-to-day variability and a possible day-to-night variability in the ozone vertical distribution with the night-time values higher than the daytime values at all altitudes above 35 km and the difference is found to increase with the increasing altitude.  相似文献   

Non-GUT baryogenesis and large-scale structure of the Universe     

D. P. Kirilova  M. V. Chizhov 《Monthly notices of the Royal Astronomical Society》2000,314(2):256-262

We discuss a mechanism for producing baryon density perturbations during the inflationary stage, and study the evolution of the baryon charge density distribution in the framework of the low-temperature baryogenesis scenario. This mechanism may be important for large-scale structure formation in the Universe and, in particular, may be essential for understanding the existence of a characteristic scale of 130  h ⁻¹ Mpc (comoving size) in the distribution of the visible matter.
A detailed analysis shows that both the observed very large scale of the visible matter distribution in the Universe and the observed baryon asymmetry value could naturally appear as a result of the evolution of a complex scalar field condensate, formed at the inflationary stage.
Moreover, according to our model, the visible part of the Universe at present may consist of baryonic and antibaryonic regions, sufficiently separated, so that annihilation radiation is not observed.  相似文献