Physics
Scientific paper
Apr 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jgr....93.2511z&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 93, April 1, 1988, p. 2511-2518.
Physics
156
Cosmic Rays, Geomagnetism, Magnetic Disturbances, Magnetic Flux, Solar Wind, Explorer 50 Satellite, International Sun Earth Explorer 3, Proton Energy
Scientific paper
Nineteen magnetic clouds are identified in the years from 1978 through 1982 and studied using superposed epoch analysis. The magnetic-field intensity, proton density and proton temperature are enhanced ahead of magnetic clouds that are preceded by shock, while strong magnetic-field intensity and low proton temperature are observed within the clouds. A relatively large (about 2.5 percent) decrease in cosmic-ray intensity is associated with magnetic clouds that are preceded by a shock, perhaps caused by the turbulent sheath behind an interplanetary shock ahead of the magnetic cloud, whereas only a small (0.5 percent) decrease in intensity is associated with the magnetic cloud itself. Magnetic clouds can produce geomagnetic activity with a decrease in Dst index of the order 100 gamma. The magnitude of the change in the Dst index for the case when southward fields arrive first is comparable to that for the case when northward fields arrive first, and the phase is such that geomagnetic activity is associated with southward fields.
Burlaga Leonard Francis
Zhang Guobao
No associations
LandOfFree
Magnetic clouds, geomagnetic disturbances, and cosmic ray decreases does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Magnetic clouds, geomagnetic disturbances, and cosmic ray decreases, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic clouds, geomagnetic disturbances, and cosmic ray decreases will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-849467