Data obtained from the world-wide network of stations during the IGY on the emission intensity of 5577 A (OI) have been used for the study of the diurnal variation. In addition to the overall diurnal variation, seasonal and sunspot cycle effects have been studied and a harmonic analysis has been carried out on the data. (Author).
This bibliography lists all AFCRL in-house reports, journal articles, and contractor reports from 1 October to 31 December 1969. Abstracts are included.
The use of a one-dimensional model atmosphere calculation incorporating dissociation of O2 and ionized species demonstrates that dissociation, through the production of atomic oxygen, can drive the vertical thermosphere and upper mesosphere into diurnal oscillations. It is further demonstrated that neutral mesospheric and lower thermospheric turbulence, through its control of atomic oxygen flow, can cause large amplitude variations of these oscillations. (Author).
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Astronomy and Astrophysics Abstracts. which appears in semi-annual volumes, is devoted to the re cording, summarizing and indexing of astronomical publications throughout the world. It is prepared under the auspices of the International Astronomical Union (according to a resolution adopted at the 14th General Assembly in 1970). Astronomy and Astrophysics Abstracts aims to present a comprehensive documentation of literature in all fields of astronomy and astrophysics. Every effort will be made to ensure that the average time interval between the date of receipt of the original literature and publication of the abstracts will not exceed eight months. This time interval is near to that achieved by monthly abstracting journals, com pared to which our system of accumulating abstracts for about six months offers the advantage of greater convenience for the user. Volume 3 contains literature published in 1970 and received before August IS, 1970; some older lite rature which was received late and which is not recorded in earlier volumes is also included.
