{"title":"Variations of Atomic Oxygen Densities in the Thermosphere","authors":"G. Schmidtke, C. Muenther, K. Rawer, M. Rycroft","doi":"10.1515/9783112482124-032","DOIUrl":"https://doi.org/10.1515/9783112482124-032","url":null,"abstract":"","PeriodicalId":423960,"journal":{"name":"Sāo Paulo, S.P., Brazil - June 1974","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1975-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115353931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Lunar Magnetic Field","authors":"C. Russell, P. Coleman, G. Schubert","doi":"10.1515/9783112482124-083","DOIUrl":"https://doi.org/10.1515/9783112482124-083","url":null,"abstract":"","PeriodicalId":423960,"journal":{"name":"Sāo Paulo, S.P., Brazil - June 1974","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1975-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122816044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Eight-hourly (ter-diurnal) Component of Atmospheric Tides","authors":"M. Glass, J. Fellous, M. Rycroft","doi":"10.1515/9783112482124-027","DOIUrl":"https://doi.org/10.1515/9783112482124-027","url":null,"abstract":"","PeriodicalId":423960,"journal":{"name":"Sāo Paulo, S.P., Brazil - June 1974","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1975-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123013059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
L. Kashkarov, A. K. Lavrukhina, L. I. Genaeva, M. K. Antoshin, G. Spivak
{"title":"Track Investigations of Lunar Soil returned by Luna 20","authors":"L. Kashkarov, A. K. Lavrukhina, L. I. Genaeva, M. K. Antoshin, G. Spivak","doi":"10.1515/9783112482124-080","DOIUrl":"https://doi.org/10.1515/9783112482124-080","url":null,"abstract":"","PeriodicalId":423960,"journal":{"name":"Sāo Paulo, S.P., Brazil - June 1974","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1975-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123525244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"FROM MARS WITH LOYE","authors":"R. Young, D. Devincenzi","doi":"10.1515/9783112482247-016","DOIUrl":"https://doi.org/10.1515/9783112482247-016","url":null,"abstract":"","PeriodicalId":423960,"journal":{"name":"Sāo Paulo, S.P., Brazil - June 1974","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1975-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129549888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"High Energy Gamma Ray Astronomy","authors":"C. Fichtel, K. Greisen, D. Kniffen","doi":"10.1063/1.3069157","DOIUrl":"https://doi.org/10.1063/1.3069157","url":null,"abstract":"All the natural electromagnetic radiation reaching the Earth, whether from nearby or remote parts of the universe, brings with it information on the contents or structure of the region in which it originated. This is true of each part of the spectrum, from radio waves through the visible, ultraviolet and x‐ray regions, to the realm of high‐energy gamma rays which is our subject here. We will be concentrating on celestial gamma rays, with energies above about 10 MeV, which provide clear and in some respects unique information on the high‐energy particles and processes in the universe, both currently and in the remote past.","PeriodicalId":423960,"journal":{"name":"Sāo Paulo, S.P., Brazil - June 1974","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1975-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124790600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Periodic Oscillations in Stratosphere and Mesosphere","authors":"A. E. Cole, M. Rycroft","doi":"10.1515/9783112482124-025","DOIUrl":"https://doi.org/10.1515/9783112482124-025","url":null,"abstract":"Abstract : Periodic fluctuations in the annual temperature and density distributions based on rocket observations at heights between 30 to 90 km are presented in terms of amplitude and phase as a function of height and latitude. The phases of the semi-annual components in arctic and subarctic regions are markedly different at levels in the upper stratosphere if the analyses are based on monthly medians rather than monthly means. Means and medians are considerably different at these altitudes during the winter months in this region due to stratospheric and mesospheric warmings.","PeriodicalId":423960,"journal":{"name":"Sāo Paulo, S.P., Brazil - June 1974","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1974-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134362399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"NEW METHODOLOGY FOR ASSESSING THE PROBABILITY OF CONTAMINATING MARS","authors":"D. North, B. Judd, J. Pezier","doi":"10.1515/9783112482247-018","DOIUrl":"https://doi.org/10.1515/9783112482247-018","url":null,"abstract":"Methodology is proposed to assess the probability that the planet Mars will be contaminated by terrestrial microorganisms aboard a spacecraft. The present NASA methods are extended to permit utilization of detailed information on microbial characteristics, the lethality of release and transport mechanisms, and of other information about the Martian environment. Different types of microbial release are distinguished, and for each release mechanism a probability of growth is computed. Using this new methodology, an assessment was carried out for the 1975 Viking landings on Mars. The resulting probability of contamination for each Viking lander is 6 x 10 to the -6 power, and is amenable to revision as additional information becomes available.","PeriodicalId":423960,"journal":{"name":"Sāo Paulo, S.P., Brazil - June 1974","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1974-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131831005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
H. Bridge, A. Lazarus, K. Ogilvie, J. Scudder, R. Hartle, J. Asbridge, S. Bame, W. Feldman, G. Siscoe, C. Yeates, M. Rycroft
{"title":"Preliminary Report of Results from the Plasma Science Experiment on Mariner 10","authors":"H. Bridge, A. Lazarus, K. Ogilvie, J. Scudder, R. Hartle, J. Asbridge, S. Bame, W. Feldman, G. Siscoe, C. Yeates, M. Rycroft","doi":"10.1515/9783112482124-069","DOIUrl":"https://doi.org/10.1515/9783112482124-069","url":null,"abstract":"Preliminary measurements of electron number density and temperature near Venus and Mercury and some results on flow speeds are presented. It is concluded that the interaction of the solar wind with Venus probably results in a bow shock characterized by H/r = 0.01 (ratio of the ionospheric scale height to the planetocentric distance of the nose of the ionopause); an extended exosphere appears unlikely. This direct interaction is indicated by the behavior of electrons with energies of 100-500 eV. Some unusual downstream effects suggest a comet-like tail several hundred scale lengths long. Near Mercury, a fully developed bow shock and magnetosheath were observed. Inside the magnetosheath there is a region analogous to the magnetosphere of the earth and populated by electrons of lower density and temperature than those found in the solar wind. The solar wind ram pressure corresponds to a stagnation pressure equivalent to a 170 gamma magnetic field. The strong solar wind interaction with Mercury is definitely magnetic, but not ionospheric or atmospheric. Spectra and particle flux varied widely while the spaceship was within the magnetosphere itself; temporal events like substorms may be responsible.","PeriodicalId":423960,"journal":{"name":"Sāo Paulo, S.P., Brazil - June 1974","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1974-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131379652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Formation of Ionization Ledges in the Equatorial Topside Ionosphere","authors":"R. Rao, M. Sivaraman","doi":"10.1515/9783112482124-055","DOIUrl":"https://doi.org/10.1515/9783112482124-055","url":null,"abstract":"Topside ionograms obtained in the low-latitude region around the magnetic equator reveal cusp formation, indicating the existence of a ledge due to an enhancement of ionization in the vertical electron density profiles. The present work discusses two examples of ledge observations, one at noontime and the other at a pre-midnight hour. The noontime observations indicate that the ledge is formed in the region above the F2 layer maximum where O(+) ions are predominant. A mechanism for ledge formation is discussed, in which a field-aligned anomaly in neutral density and temperature plays a significant role. Such an anomaly inhibits plasma flow along the field line and causes an enhancement of ionization along a particular field line over the magnetic equator.","PeriodicalId":423960,"journal":{"name":"Sāo Paulo, S.P., Brazil - June 1974","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1974-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124800479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
