Results 171 to 180 of about 4,343 (197)

Extreme interplanetary rotational discontinuities at 1 AU

Journal of Geophysical Research: Space Physics, 2005
This study is concerned with the identification and description of a special subset of four Wind interplanetary rotational discontinuities (from an earlier study of 134 directional discontinuities by Lepping et al. (2003)) with some “extreme” characteristics, in the sense that every case has (1) an almost planar current sheet surface, (2) a very large ...
R. P. Lepping, C.‐C. Wu
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Progress in the Study of Interplanetary Discontinuities

AIP Conference Proceedings, 2010
This paper summarizes some of the recent rebirth of interest in interplanetary discontinuities. Vasquez et al. have developed a new method of searching for discontinuities that allows the study of structures with small angles of rotation. Those discontinuities are consistent with the in situ generation of discontinuities by Alfvenic turbulence ...
Marcia Neugebauer, Joe Giacalone, M. Maksimovic, K. Issautier, N. Meyer-Vernet, M. Moncuquet, F. Pantellini   +6 more
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Alfvén waves and directional discontinuities in the interplanetary medium

Journal of Geophysical Research, 1975
The properties of directional discontinuities occurring in selected periods of interplanetary magnetic field data are investigated. Microscale fluctuations in these selected periods have previously been identified as being predominantly Alfvenic on time scales ranging from 5 min to a few hours. We argue that the majority of directional discontinuities
John W. Belcher, Craig V. Solodyna
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A review of interplanetary discontinuities and their geomagnetic effects

Journal of Atmospheric and Solar-Terrestrial Physics, 2011
Abstract Interplanetary discontinuities and their geomagnetic effects are reviewed for magnetospheric/space weather researchers. Discontinuities are particularly useful as diagnostics since they are clearly identifiable in interplanetary data and their geomagnetic effects are unambiguous most of the time.
B.T. Tsurutani, G.S. Lakhina, O.P. Verkhoglyadova, W.D. Gonzalez, E. Echer, F.L. Guarnieri   +5 more
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Alfvén waves, magnetic decreases, and discontinuities in interplanetary space

Advances in Space Research, 2001
The Ulysses mission goes to the polar regions of the heliosphere and therefore is an ideal mission to study Alfven waves and discontinuities.
B.T. Tsurutani, B. Buti, J.K. Arballo, T. Hada, E.J. Smith, A. Balogh   +5 more
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Observed properties of interplanetary rotational discontinuities

Journal of Geophysical Research, 1973
In a prior study, discontinuities were identified as tangential or rotational principally on the basis of the existence or absence of a magnetic field component perpendicular to the plane of the discontinuity. The observed properties of the rotational discontinuities are described in this paper.
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Interplanetary discontinuities and Alfvén waves at high heliographic latitudes: Ulysses

Journal of Geophysical Research: Space Physics, 1996
This paper presents the results of the first statistical study of interplanetary directional discontinuities at both low and high heliographic latitudes measured by the Ulysses magnetometer. There is a gradual decrease in the rate of occurrence of interplanetary discontinuities (ROIDs) with increasing radial distance.
Bruce T. Tsurutani, C. M. Ho, J. K. Arballo, E. J. Smith, B. E. Goldstein, M. Neugebauer, A. Balogh, W. C. Feldman   +7 more
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Angular distribution of discontinuity normals of the interplanetary magnetic field

Astronomische Nachrichten, 2013
AbstractHigh time resolved (6 s) magnetic field data from the Helios‐1 and Ulysses spacecrafts were used to investigate MHD discontinuities in the heliosphere. The identification of discontinuities was based on the rotation of the field vectors relative to the distance to the plasma in which the vectors were supposed to be frozen.
K. Lukács, G. Erdős
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Identification of interplanetary tangential and rotational discontinuities

Journal of Geophysical Research, 1973
Discontinuities in the interplanetary magnetic field detected by the Mariner 5 magnetometer have been analyzed to distinguish tangential and rotational discontinuities. The method used was based on finding the field component normal to the plane of the discontinuities that vanishes for tangential discontinuities and is nonzero for rotational ...
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Plasma field characteristics of directional discontinuities in the interplanetary medium

Journal of Geophysical Research, 1977
The paper examines plasma and magnetic-field changes occurring across 1359 directional discontinuities taken from interplanetary data spanning almost four solar rotations. The plasma field characteristics of these events exhibit a distinct variation with large-scale solar-wind velocity.
Craig V. Solodyna, James W. Sari, John W. Belcher   +2 more
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