Journal ArticleDOI
Observations of interaction regions and corotating shocks between one and five AU: Pioneers 10 and 11
Edward J. Smith,John H. Wolfe +1 more
TLDR
In this article, the interaction regions between adjacent solar-wind streams have been identified between 1 and 5 AU by Pioneer 10 and 11 magnetic-field and plasma measurements, and a relatively large fraction of the interactions are accompanied by either forward shocks, reverse shocks, or shock pairs.Abstract:
Interaction regions between adjacent solar-wind streams have been identified between 1 and 5 AU by Pioneer 10 and 11 magnetic-field and plasma measurements. Beyond 1 AU, a relatively large fraction of the interaction regions have been found to be accompanied by either forward shocks, reverse shocks, or shock pairs. The observations are consistent with previous theoretical proposals that the interaction between adjacent streams leads to the development of corotating interplanetary shocks.read more
Citations
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Journal ArticleDOI
Origin of interplanetary southward magnetic fields responsible for major magnetic storms near solar maximum (1978–1979)
TL;DR: In this article, simultaneous ISEE-3 field and plasma data were used to examine interplanetary phenomena associated with 10 major magnetic storms detected from August 16, 1978, to December 28, 1979, in a study of Gonzalez and Tsurutani (1987), and, in particular, to determine the origins of the southward magnetic fields which caused the storms.
Journal ArticleDOI
Interplanetary origin of geomagnetic storms
TL;DR: In this article, the authors examined the effects of a combination of a long-duration southward sheath magnetic field, followed by a magnetic cloud Bs event, and showed that double, and sometimes triple, IMF Bs events are important causes of such events.
Journal ArticleDOI
Corotating solar wind streams and recurrent geomagnetic activity: A review
Bruce T. Tsurutani,Bruce T. Tsurutani,Walter D. Gonzalez,Alicia L. Clúa de Gonzalez,Fernando L. Guarnieri,Nat Gopalswamy,Manuel Grande,Yohsuke Kamide,Yoshiya Kasahara,Gang Lu,Ian R. Mann,Robert L. McPherron,Finn Søraas,Vytenis M. Vasyliunas +13 more
TL;DR: In this paper, it was shown that geomagnetic storms associated with high-speed streams/CIRs will have the same initial, main, and recovery phases as those associated with ICME-related magnetic storms but that the interplanetary causes are considerably different.
Journal ArticleDOI
Interplanetary origin of geomagnetic activity in the declining phase of the solar cycle
Bruce T. Tsurutani,Walter D. Gonzalez,Alicia L. Clúa de Gonzalez,Frances Tang,J. K. Arballo,Masaki Okada +5 more
TL;DR: In this article, the authors compared the Earth's magnetic field and plasma data with ground-based geomagnetic Dst and AE indices to determine the causes of magnetic storms, substorms and quiet during the descending phase of the solar cycle.
Journal ArticleDOI
Formation and evolution of corotating interaction regions and their three dimensional structure
J. T. Gosling,V. J. Pizzo +1 more
TL;DR: The corotating interaction regions (CIRs) as discussed by the authors are a consequence of spatial variability in the coronal expansion and solar rotation, which cause solar wind flows of different speeds to become radially aligned.
References
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Mariner 2 observations of the solar wind. 1. average properties
TL;DR: In this paper, the authors summarized the properties of the positive ion component of the solar wind observed during the four months of the Mariner 2 flight to and past Venus in 1962, and calculated the ions' velocity, temperature and density from ∼35,000 energy/charge spectrums by fitting the data to isotropic Maxwell-Boltzmann distributions in a reference frame moving away from the sun at the solar-wind velocity.
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Solar wind structure at large heliocentric distances: An interpretation of Pioneer 10 observations
A. J. Hundhausen,J. T. Gosling +1 more
TL;DR: In this paper, the Pioneer 10 observations give the first confirmation of the general concept of solar wind stream evolution employed in these models, i.e., that solar wind speed inhomogeneities appear to steepen to form shock waves and that the wave amplitudes decay slowly as the shock waves propagate outward from the sun.
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Solar wind stream evolution at large heliocentric distances: Experimental demonstration and the test of a model
TL;DR: In this article, a stream propagation model which neglects all dissipation effects except those occurring at shock interfaces was used to compare Pioneer-10 solar wind speed observations, during the time when Pioneer 10, the earth, and the sun were coaligned, with near-earth Imp-7 observations of the solar wind structure.
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Nonlinear model of high‐speed solar wind streams
TL;DR: In this paper, a hydrodynamic model describing the generation and propagation of high-speed plasma streams in the solar wind is presented, based upon numerical integrations of the conservation equations for a time-dependent, spherically symmetric, radial flow of interplanetary plasma.
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Interpretation of Kp index and M-region geomagnetic storms
A. J. Dessler,J.A. Fejer +1 more
TL;DR: The k sub p index as mentioned in this paper measures the flucuations of the sum of plasma plus magnetic pressure acting on the outer boundary of the magnetosphere, and is defined as a measure of the flueuations of a single particle.