Results 161 to 170 of about 9,593 (201)
Some of the next articles are maybe not open access.
Journal of Geophysical Research, 1974
Magnetic field data from the Goddard Space Flight Center magnetometer experiment on board Ogo 5 are analyzed by the minimum-variance technique for two magnetopause crossings, believed to provide the best evidence presently available of magnetopause rotational discontinuities. Approximate agreement with predictions from MHD and first-order orbit theory
B. U. Ö. Sonnerup, B. G. Ledley
openaire +1 more source
Magnetic field data from the Goddard Space Flight Center magnetometer experiment on board Ogo 5 are analyzed by the minimum-variance technique for two magnetopause crossings, believed to provide the best evidence presently available of magnetopause rotational discontinuities. Approximate agreement with predictions from MHD and first-order orbit theory
B. U. Ö. Sonnerup, B. G. Ledley
openaire +1 more source
Tearing modes at the magnetopause
Journal of Geophysical Research: Space Physics, 1981This paper examines the possible occurrence of tearing modes in the dayside magnetopause. First, the expected magnetic signature of tearing, as obtained from existing theory, is reviewed. Magnetometer data from one terrestrial magnetopause crossing and one crossing of Jupiter's magnetopause are then examined in detail.
J. B. Greenly, B. U. Ö. Sonnerup
openaire +1 more source
Demarcating the magnetopause boundary
Reviews of Geophysics, 1995Determining the shape of the magnetopause is one of the oldest problems in space physics and one of its earliest success stories. Chapman and Ferraro [1931] were the first to recognize that the Earth's magnetic field carves out a cavity in the oncoming solar wind.
openaire +1 more source
1974
The distance from Earth to the magnetopause at very high latitudes has been measured on the HEOS-2 satellite. The wave experiment on this satellite measures magnetic and electric signals at five frequencies between 20 and 236 Hz. The transition from the magnetosphere into the sheath region is clearly indicated in these signals.
A. Bahnsen, I. B. Iversen, E. Ungstrup
openaire +1 more source
The distance from Earth to the magnetopause at very high latitudes has been measured on the HEOS-2 satellite. The wave experiment on this satellite measures magnetic and electric signals at five frequencies between 20 and 236 Hz. The transition from the magnetosphere into the sheath region is clearly indicated in these signals.
A. Bahnsen, I. B. Iversen, E. Ungstrup
openaire +1 more source
Ionospheric Signatures of Magnetopause Processes
1998Whilst it is well-accepted that short-duration changes to the Interplanetary Magnetic Field (IMF) and solar wind cause high-latitude ionospheric transients observed by magnetic, optical and radar techniques, a coherent explanation of the zoo of signatures remains illusive.
openaire +2 more sources
Magnetopause reconnection rate
Journal of Geophysical Research, 1974Discussion of certain aspects of the magnetic field reconnection process at the magnetopause. It is argued that the upper limits on reconnection derived by Petschek (1964), on the one hand, and Yeh and Axford (1970) and Sonnerup (1970), on the other, may be reconciled, at least qualitatively.
openaire +1 more source
The electrostatic field at the magnetopause
Planetary and Space Science, 1970Abstract The discharge through the magnetosphere-ionosphere circuit of the electrostatic field at the magnetopause is examined quantitatively using an idealized circuit analogue. The two geomagnetic flux tubes linking the magnetopause to the ionosphere are treated as uniform transmission lines and the magnetopause and ionosphere are regarded as ...
openaire +1 more source