Showing papers in "Planetary and Space Science in 1964"

TL;DR: In this paper, a working model of simultaneous auroral activity over the entire polar region is presented in terms of the auroral substorm, which has two characteristic phases, an expansive phase and a recovery phase.

TL;DR: In this paper, it was shown that viscous interaction between the solar wind and the Earth's magnetosphere can satisfy the energy requirements of a typical magnetic storm, due mainly to turbulence of a compressible nature.

TL;DR: In this article, the motion of charged particles in magnetic fields is reviewed for the purpose of understanding the observed net streaming of cosmic rays through interplanetary space, and it is shown that the large-scale fields (which often reverse) give no steady streaming by themselves.

TL;DR: Ring current effects on axisymmetric development of geomagnetic storm fields in low and middle latitudes were studied in this paper, showing that ring current effects have a strong influence on the development of magnetic storm fields.

TL;DR: In this article, the interpretation of coronal observations in X-ray, ultra-violet visible and radio wavelengths is reviewed, and the authors present a survey of the results.

TL;DR: In this article, a nighttime F layer maintained by hydrogen ions providing source of oxygen ions through charge exchange or by upward drift of ionization is described, where hydrogen ions are replaced by oxygen ions.

TL;DR: In this paper, a hartree-fock approximation for the final states of atomic oxygen photoionization was proposed, based on the H-FOCK algorithm. But this approximation is not suitable for all cases.

TL;DR: In this paper, it was shown that the rate of thermal He+ loss in reaction with N2 is 1·2 ± 0·3 times the rate for reaction with O2.

TL;DR: In this article, the angular velocity of the upper atmosphere is determined by examining the changes in orbital inclination of all suitable satellites, covering the years 1958-63, height of 200-300 km and latitudes from 0-60°.

TL;DR: In this article, the production of bremsstrahlung X-rays associated with energetic auroral electron streams is computed, and the ionization rate due to the Xrays is deduced.

TL;DR: In this paper, the role of energetic neutral hydrogen atoms is examined as a possible source of the energy for the ring current belt and auroral substorms, and a possible conversion mechanism of the ring currents energy into the auroral energy is suggested.

TL;DR: In this article, the problem of determining the content of a column of molecules making an angle χ with the zenith is considered, particularly for large solar Zenith distances.

TL;DR: The analysis of geomagnetic pulsations simultaneously recorded at the German observatories Wingst, Gottingen, and Furstenfeldbruck by means of standardized equipment, has yielded a systematic increase of the period with increasing geOMagnetic latitude as far as the H -components of pc-and pse-type pulsations are concerned as mentioned in this paper.

TL;DR: Interaction of shock wave in medium upstream from nuclei of comets with solar wind may produce green and red lines in comet spectrum as mentioned in this paper, which may be used to detect comets.

TL;DR: In this paper, the authors examined the flow of the solar wind plasma about the Moon in two limiting cases and found that the flow pattern of the plasma can be controlled by either flow pattern or flow pattern, while accretion from solar wind can be important only under rather restrictive conditions.

TL;DR: In this article, a model is presented by which changes in the direction of the interplanetary magnetic field can cause energy from the solar wind to be coupled to the magnetosphere.

TL;DR: In this article, it was shown that the photo-ionization by extreme ultraviolet radiation of the Sun is not likely to change seriously the initial degree of ionization of the chromospheric plasma during its passage to the Earth's distance.

TL;DR: In this paper, the problems relating to the differentiation of flares with respect to terrestrial effects remain numerous and stem not only from difficulties in securing and understanding flare observations but also from similar uncertainties in respect to the increasingly complex geophysical data.

TL;DR: In this article, it is shown that the solar plasma flow by itself may be a necessary condition for the development of geomagnetic storms, but not a sufficient condition for additional factors such as ring current and auroral activity.

TL;DR: In this paper, radio noise observations at frequencies of 0·700 Mc and 2·200 Mc were made at altitudes between 3000 and 11,000 km from a Blue Scout Jr. high-altitude rocket probe on 30 July 1963.

TL;DR: In this paper, the assumptions and constants used by Rayleigh in his absolute calibration have been carefully checked, with a resulting small change in the absolute intensity that he had reported, and a discussion of current knowledge of the night-sky continuum and its correlation with the green line has also been included.

TL;DR: In this paper, the perturbation of satellite orbits by aerodynamic lift is investigated and two simple variations of lift around the orbit are considered and the changes in eccentricity and argument of perigee are determined.

TL;DR: In this article, it was shown that the nocturnal hydrogen content of the geocorona is of an optical thickness large enough to account for observed Lyman- alpha excitntion.

TL;DR: In this article, it was shown that the propagation velocity of irregularities, of any strength and shape, depends on the neutral ionization drift produced by the currents applied and induced by the magnetic field.

TL;DR: In this paper, a study of the emission from a luminous cloud produced by a TNT explosion suggests that the temperature in the 200-220 km region of the twilight atmosphere is about 1250°K or rather less.