Shock parameter calculations at weak interplanetary shock waves [PDF]
Annales Geophysicae, 2005 A large set of interplanetary shock waves observed using the Ulysses spacecraft is analysed in order to determine their local parameters. For the first time a detailed analysis is extended to the thermodynamic properties of a large number of events ...
J. M. Gloag, A. Balogh
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Transit of the Interplanetary Shocks Associated with Type II Radio Bursts Within 1AU [PDF]
Journal of Astronomy and Space Sciences, 2007 Among the interplanetary shock (IP shock)s observed by ACE spacecraft at 1AU during 1997 to 2000, we have selected 31 IP shocks which had triggered the interplanetary type II radio bursts detected by the WIND spacecraft while those shocks were leaving ...
Su Yeon Oh, Yu Yi, Yong Ha Kim
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Physical Characteristics of Coronal Region Driving Out the Interplanetary Shock [PDF]
Journal of Astronomy and Space Sciences, 2008 Using the solar wind data of 2000 observed by ACE, We classified the interplanetary shock on basis of shock driver. We examined the physical properties of shock drivers such as the ratio of charge states(O7/O6) and thermal index(I_{th}).
Su Yeon Oh, Yu Yi
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Long-duration high-energy proton events observed by GOES in October 1989 [PDF]
Annales Geophysicae, 1998 We consider the prolonged injection of the high-energy (>10 MeV) protons during the three successive events observed by GOES in October 1989. We apply a solar-rotation-stereoscopy approach to study the injection of the accelerated particles from ...
A. Anttila +3 more
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Magnetic Cloud and Its Interplanetary Shock Sheath as a Modulator of the Cosmic Ray Intensity [PDF]
Journal of Astronomy and Space Sciences, 2008 Forbush Decreases (FDs) are representative events of abrupt decrease in galactic cosmic ray intensity. They are known to be strongly associated with solar wind events such as interplanetary shock (IP shock) and magnetic cloud (MC).
Su Yeon Oh
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In situ local shock speed and transit shock speed [PDF]
Annales Geophysicae, 1998 A useful index for estimating the transit speeds was derived by analyzing interplanetary shock observations. This index is the ratio of the in situ local shock speed and the transit speed; it is 0.6–0.9 for most observed shocks.
S. Watari, T. Detman
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Letter to the Editor
Forbush precursory increase and shock-associated particles on 20 October 1989 [PDF]
Annales Geophysicae, 2002 Strong interplanetary disturbances may affect cosmic ray protons tremendously with energies less than 1 GeV, increasing their intensity by hundreds of percents, but they are not so effective for protons of higher energies.
A. Struminsky +2 more
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Unusual enhancement of ~ 30 MeV proton flux in an ICME sheath region
Earth, Planets and Space, 2021 In gradual Solar Energetic Particle (SEP) events, shock waves driven by coronal mass ejections (CMEs) play a major role in accelerating particles, and the energetic particle flux enhances substantially when the shock front passes by the observer.
Mitsuo Oka +5 more
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Statistical study on interplanetary drivers behind intense geomagnetic storms and substorms
Earth and Planetary Physics, 2019 Geomagnetic storms and substorms play a central role in both the daily life of mankind and in academic space physics. The profiles of storms, especially their initial phase morphology and the intensity of their substorms under different interplanetary ...
Tian Tian +5 more
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Dynamics of He++ Ions at Interplanetary and Earth’s Bow Shocks
Universe, 2022 Experimental investigations of the fine plasma structure of interplanetary shocks are extremely difficult to conduct due to their small thickness and high speed relative to the spacecraft.
Olga V. Sapunova +3 more
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