Large-scale coherence and high velocities of the Earth's bow shock on February 12, 1969
| Autor: | E. W. Greenstadt, Christopher T. Russell, P. C. Hedgecock |
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| Rok vydání: | 1972 |
| Předmět: |
Shock wave
Atmospheric Science Soil Science Magnetosphere Astrophysics Aquatic Science Oceanography Earth radius symbols.namesake Magnetosheath Geochemistry and Petrology Earth and Planetary Sciences (miscellaneous) Earth-Surface Processes Water Science and Technology Physics Ecology Ecliptic Paleontology Forestry Geodesy Solar wind Geophysics Mach number Space and Planetary Science Bow wave symbols |
| Zdroj: | Journal of Geophysical Research. 77:1116-1122 |
| ISSN: | 0148-0227 |
| Popis: | The earth's bow shock exhibited a clean laminar profile at low Mach number as it crossed and recrossed Ogo 5, Heos 1, and Explorer 33 on February 12, 1969. The approximate 120 earth radii distance between Heos and Explorer during one set of crossings indicated the abrupt character of the laminar shock 'front' and the absence of magnetosheath turbulence both in the dayside hemisphere above the ecliptic and in the flank of the shock 75 earth radii behind the earth and below the ecliptic. The abruptness of the shock and coplanarity of the loci of Ogo and Heos with the local shock normal permit the most reliable estimates yet obtained of shock velocities along the normal. These mean velocities ranged from 11 to at least 100 km/sec over distances of 2-7 earth radii. |
| Databáze: | OpenAIRE |
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