Technical Abstracts - U. S. Goddard Space Flight Center, Volume 5

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U.S. Government Printing Office, 1967 - Space flight
 

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Page 2 - Clearing House for Federal Scientific and Technical Information, US Department of Commerce, 5285 Port Royal Road, Springfield, Virginia 22151.
Page 29 - An elementary introduction to the inverse problem of radiative transfer as applied to remote measurements of infrared radiation from planetary atmospheres is presented along with a review of work which has been done on the problem. Particular attention is given to the problems of inferring vertical temperature profiles and water vapor distributions in the Earth's atmosphere. The principle methods which have been developed for solving these problems are discussed briefly. Examples of applications...
Page 16 - ... interplanetary field that lowers the Alfven Mach number to 1.5. The transition region magnetic field adjacent to the shock interface is exceptionally stable in contrast to a number of theoretical predictions and the typical shocks observed at high Mach numbers, (d) The magnetopause in the sunward hemisphere is most typically observed as a smooth transition over a dimension comparable to the ion cyclotron radius...
Page 16 - ... radius, (e) The correlation of negative bay onsets in the auroral belt with OGO-A observations on the night side of the earth supports more general morphological arguments that the onset originates within the closed magnetosphere or auroral ionosphere and is not dependent on being triggered by a sudden change in the solar wind plasma or field. The view is advanced that the onset results from short-circuiting effects in the ionosphere...
Page 18 - Leaton give results within a few degrees of the latest more accurate models; (3) use of the eccentric dipole approximation gives errors that range from a few tens of kilometers at high latitude to several hundred kilometers near the equator; and (4) the secular change of conjugatepoint locations is very small, averaging 1 to 10 km/ yr.
Page 28 - The global average of the radiation balance for all five subperiods was between -0.007 and +0.002 cal cm"2 min"1 indicating that the earth-atmosphere system is nearly in radiative equilibrium. These values are, however, within the limits of uncertainty of the computed fluxes of incoming and reflected solar radiation and the thermal radiation. The global average of the albedo was found to be about 30%, suggesting that other authors who found a value of about 35% from climatological data might have...
Page 15 - ... and 52 inclination. Equipment functioned normally. Satellite reentered Aug. 17. (Aero ^ Tech, 8/14/67, 13; GSFC SSR, 8/31/67) • Explorer XXXV, launched July 19, had completed 33 orbits of the moon. Results from GSFC'S magnetic field experiment aboard spacecraft indicated moon was not magnetized. Capture of interplanetary magnetic field lines by the moon and formation of lunar magnetosphere (theorized by T. Gold in 1966) was not substantiated. A lunar bow shock wave had not yet been observed...
Page 13 - A best current model of the main geomagnetic field is presented as a response to a need for an "International Geomagnetic Reference Field". This model is described by a series of 120 spherical harmonic coefficients and their first and second time derivatives from an epoch 1960.0.
Page 13 - This model is described by a series of 120 spherical harmonic coefficients and their first and second time derivatives from an epoch 1960.0. It was derived from a sample of all magnetic survey data available from the interval 1900-1964 plus a recent global distribution of preliminary total field observations from the OGO-2 (1965-81A) spacecraft for epoch 1965.8.
Page 18 - L 2 5 the field line passes through regions where the field intensity is sufficiently weak that conjugate point determinations should include realistic estimates (not now available) of the distortions due to plasma interactions. Over the past few years our knowledge of the exact structure of the geomagnetic field has increased considerably. Not only is the main field known to a high accuracy but also some of the gross features of its distortions by external pressures are becoming clear. The purpose...

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