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Table of Content

    24 August 1996, Volume 16 Issue 3 Previous Issue    Next Issue
    论文
    SUB-ALFVENIC FLOWS IN THE QUIET AND RECURRENT SOLAR WINDS
    Zhang Gong-hang
    1996, 16 (3):  167-171.  doi: 10.11728/cjss1996.03.167
    Abstract ( 1594 )   PDF (331KB) ( 915 )   Save
    Observational facts are displayed in this paper showing that the sub-Alfvenic flow may be formed in the quiet and recurrent low-speed solar wind streams.Such kind of flow appears in a region with abnormal enhancement of Alfvenic speed,and associates with a certain specific magnetic configuration.
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    THE FRESNEL STRUCTURE IN INTERPLANETARY SCINTILLATION POWER SPECTRUM AND SOLAR-WIND VELOCITY
    Ye Pin-zhong
    1996, 16 (3):  172-177.  doi: 10.11728/cjss1996.03.172
    Abstract ( 1685 )   PDF (2571KB) ( 880 )   Save
    The Fresnel structure of interplanetary scintillation(lPS)power spectrum is discussed in weak scattering.If there isn't interplanetary disturbance,numerical results show that the knee frequency of IPS poWer spectrum is equal to Fresnelfrequency and Fresnel oscillation consists of a series of small platforms for ε<35°.Interplanetary disturbances don't change knee frequency and solar wind velocity in disturbed region determines Fresnel oscillation.
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    FORMATION OF CURRENT SHEETS
    Li Xing
    1996, 16 (3):  178-186.  doi: 10.11728/cjss1996.03.178
    Abstract ( 1697 )   PDF (567KB) ( 613 )   Save
    Using two dimensional three component dissipative MHD model,a numerical simulation is presented concerning the current formation process in a quadrupolar potentiel magnetic field caused by photospheric shear motion. Separator plays a key role in the evolution Of the magnetic field f Current mainly builds up in separatrices and the magnetic loops in which the foot shear gradient is muximum.In separator;the current density reaches its maximum value.The photospheric shear inchon may lead to Separator splitting into strong current sheet,parallel or vertical to photosphere, depending on the location and gradient of the shear.
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    A THEORETICAL STUDY ON THE FLUX DISTRIBUTION OF HEAVY ION O+ IN THE MAGNETOSPHERE
    Shi Jian-Kui;Liu Zhen-xing;Pu Zu-yin
    1996, 16 (3):  187-192.  doi: 10.11728/cjss1996.03.187
    Abstract ( 1500 )   PDF (396KB) ( 998 )   Save
    Based on the distribution function got by solving the dynamic equation,the flux distribution and its features of ionospheric heavy ion O+ originating in the auroral zone on the meridian plane are studied.The results show that:1.the flux distribution of the O+ along the z-direction mainly appears as a peak--like structure,its maximum reduces as the geo-centre distance increasing and more quickly in near geo-space than that in far geo-space;2.the ion O+ exists in larger geo-space and the flux peak is less prominent when Kp=3-5 than that when Kp=0;3.the calculated flux of the ion O+ in the boundary of the plasmasheet is about 105cm2.s-1.The results are consistent with the observation.
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    HF WAVE PROPAGATION AND SCATTERING IN TURBULENT IONOSPHERE WITH ANISOTROPIC BACKGROUND
    Liang Jun;Wan Wei-xing
    1996, 16 (3):  193-199.  doi: 10.11728/cjss1996.03.193
    Abstract ( 1413 )   PDF (416KB) ( 1019 )   Save
    This paper discusses the question of HF wave propagation and scattering in random turbulent ionosphere with anisotropic and inhomogeneous background.Under the "Forward scattering approximation",The fluctuation of HF reflected wave caused by ionospheric irregularities is deduced.In the condition of vertical sounding,the statistical properties of the fluctuation of wave phase and amplitude are also presented.
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    NONSTEADY INTERACTION RESEARCH BETWEEN MOVING BODIES AND PLASMA IN REGION OF COMPRESSION
    Ma Shan-jun;Yang Qian-li;Luo Kai-ji
    1996, 16 (3):  200-207.  doi: 10.11728/cjss1996.03.200
    Abstract ( 1548 )   PDF (451KB) ( 988 )   Save
    In this paper, nonsteady interaction between moving body with antenna system and plasma in region of compression is investigated in detail.The dominant equations describing the interaction under the action of high-frequency field of strong antenna radiation source are obtained'After calculation,it is shown that as a pumping source,the radiation from antenna system of moving body can excites a strong electromagnetic soliton via the modulational instabilities.
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    SPACE CRYSTAL GROWTH OF PROTEINS WITH DOMESTIC FACILITY
    Bi Ru-chang
    1996, 16 (3):  208-215.  doi: 10.11728/cjss1996.03.208
    Abstract ( 1688 )   PDF (582KB) ( 2003 )   Save
    The cytstal growth of proteins and other biomacromolecules is an important study in space science'Using tube-like vapour diffusion apparatus made in China,two missions of protein crystallization have been carried out on Chinese re-entry satellites.52% and 80% of 48 samples prepared by 10 different kinds of proteins yielded crystals in the two space experiments respectively,and among them,a few of the proteins preduced better-quality Crystals.The results of the two missions show that the microgravity environment in space benefits improvement of protein crystal growth, and in the case with good enough optimized crystallization conditions,the space-grown protein crystals have larger size,better morphology and higher intend order than the Earth-grown crystals of the same protein.The effect of microgravity on protein crystal growth and its exploitation are also discussed in the paper.
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    CORRELATION BETWEEN SOLAR MICROWAVE BURSTS AND HARD X-RAY FLARES
    Fu Qi-jun;Liu Yu-ying;Ll Chun-sheng
    1996, 16 (3):  216-220.  doi: 10.11728/cjss1996.03.216
    Abstract ( 1642 )   PDF (283KB) ( 869 )   Save
    Much attention is given to the correlation between solar microwave bursts and hard X-ray flares'The solar microwave bursts with fine structures(FS) at 2.84GHz observed at BAc are compared with hard x-ray flares(HXB)recorded with YOHKOH satellite from Oct. 1991 to Dec.1992.It is found that during this time interval only 12 out of 20 microwave FS events are related with HXB of YOHKOH observation.The June 7,1991 events is analysed.The quasi-period pulsations with an average period of about one hundred seconds which explained with MHD oscillation is found in the descending phase of the event at both 10cm and HXB. Some parameters.of source region are also deduced.
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    THE SURGE ON DECEMBER 30,1982
    Hu Ju;Ni Xiang-bin;Fang Cheng
    1996, 16 (3):  221-226.  doi: 10.11728/cjss1996.03.221
    Abstract ( 1450 )   PDF (429KB) ( 791 )   Save
    The feature of the flare surge(S10 W20) on Dec.30,1982 is introduced in this paper.The change of the surge velocity with time is shown.The result of the surge spectral analysis shows that the rotation velocity of the surge is about 20-30km/ s in its rising phase.The rotation velocity decreases with time.
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    VHF RADAR OBSERVATIONS OF INERTIAL GRAVITY WAVE CRITICAL LAYERS IN THE POLAR MESOSPHERE
    Zhang Shao-dong;Yi Fan;J. Klostermeyer;R. Ruster
    1996, 16 (3):  227-232.  doi: 10.11728/cjss1996.03.227
    Abstract ( 1671 )   PDF (407KB) ( 1549 )   Save
    This paper studies the characteristics of inertial gravity wave critical layers in the mesosphere with mobile SOUSY VHF radar observations at Andφya (69° N,10°E)Norway June 1987.Data analysing shows, near critical layers, inertial gravity waves suddenly decay,wave energy are absorbed by background wind, the horizontal and vertical propagation directions may change repidly through critical layers,that indicates a downward prapogating energy source will be there at critical layer.The observations further show there is a maximum echo intensity at critical layers, strongly suggesting that critical layers play an important role on the generation of radar echo.
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    SPECTRAL ANALYSIS OF ATMOSPHERIC FLUCTUATIONS IN THE POLAR MESOSPHERE
    Xiong Jian-gang;Yi Fan;J. Klostermeyer;R. Ruster
    1996, 16 (3):  233-239.  doi: 10.11728/cjss1996.03.233
    Abstract ( 1720 )   PDF (465KB) ( 1006 )   Save
    Observations with the mobile SOUSY VHF radar at Andφya (69°N,16°E)during the MAC /SINE campaign in the summer of 1987 are used to calculate the Vertical wavenumber spectra and frequency spectra.Vertical wavenumber spectra have slopes close to -2.70, -2.65 and-1.55 for the zonal,meridional and vertical winds,respectively. Frequency spectra have slopes close to -1.44,- 1.30 and -0.27 in the range 6h-30min periods for the three velocity components.It is found that the horizontal wind spectra are in resonable accord with the 2D turbulence theory or gravity wave spectral theory.The inconsistency of vertical wind spectra to the gravity wave spectral theory can not be explained by the Doppler-shifting effects. This shows that the spectra of atmospheric waves may consist of components other than the gravity waves.
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    VARIATIONS NITRIC OXIDE COOLING RATE AND ITS EFFECT
    xu kin-juan
    1996, 16 (3):  240-244.  doi: 10.11728/cjss1996.03.240
    Abstract ( 1437 )   PDF (332KB) ( 949 )   Save
    The cooling rate of Nitric Oxide is calculated by using recently developed empirical formula of Nitric Oxide density.The effeCt of solar and.geomagnetic activity on Nitric Oxide cooling rate is studied.The main results obtained are:(1)the cooling rate and the height of maximum cooling rate occurrence periedicly varies with solar activity;(2) the variation rule with solar zenith angle are not symmetry.before and after noon;(3) it is found that the cooling rate of Nitric Oxide is not only larger than Oxigen atoms,but also its response to solar and geomagnetic activity is far more sensitive than Oxigen atoms. It is proved that Nitric Oxide cooling is a major cooling process above 120Km in the thermosphere.
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    RESPONSE OF THE LOWER STRATOSPHERIC TEMPERATURE TO VARIATIONS OF THE GALACTIC COSMIC RAYS INTENSITY
    Qin Guo-tai
    1996, 16 (3):  245-250.  doi: 10.11728/cjss1996.03.245
    Abstract ( 1433 )   PDF (2618KB) ( 933 )   Save
    In this paper,the galactic cosmic ray(GCR)intensity observed by neutron moritor at Oulu.Finland for three succesive solar minima and meteorological data at 30 and 100hpa form 4 Chinese stations are used to find the correlations between GCR intensity and lower stratospheric temperature,The results show a negative correlation, the temperature changes 2℃ to 3℃ between GCR intensity maxima and minima.The magnetued of this chang decreasing as latitudes lowering.
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