Global convection electric field and current : Comparisons between model's predictions and data from STARE, SAINT-SANTIN and magnetometers
| Autor: | Erling Nielsen, C. Senior, C. Mazaudier |
|---|---|
| Přispěvatelé: | Centre de Recherche sur la Physique de l'environnement, Centre National de la Recherche Scientifique (CNRS), Max-Planck-Institut für Aeronomie (MPI Aeronomie), Max-Planck-Gesellschaft |
| Jazyk: | angličtina |
| Rok vydání: | 1987 |
| Předmět: |
Convection
Atmospheric Science Daytime 010504 meteorology & atmospheric sciences [SDE.MCG]Environmental Sciences/Global Changes Soil Science Magnetosphere Aquatic Science Oceanography Atmospheric sciences 01 natural sciences Geochemistry and Petrology Electric field 0103 physical sciences Substorm Earth and Planetary Sciences (miscellaneous) Interplanetary magnetic field 010306 general physics 0105 earth and related environmental sciences Earth-Surface Processes Water Science and Technology Physics Ionospheric dynamo region Ecology Paleontology Forestry Geophysics Space and Planetary Science [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology Physics::Space Physics Atmospheric electricity |
| Zdroj: | Journal of Geophysical Research Journal of Geophysical Research, American Geophysical Union, 1987, 92 (A6), pp.5991-5999 |
| ISSN: | 0148-0227 2156-2202 |
| Popis: | International audience; Ionospheric electric field and ground magnetic field measurements at high, middle and low latitudes are used to study the global pattern of the convection electric field on March 26, 1979. The IMF B: component was southward and relatively steady over a prolonged period of time. The data set is thus representative of a steady magnetospheric convection. A semi-analytical time-dependent convection model is used to interpret the observations. During the daytime the model steady state results roughly reproduces the mean observed convection pattern. Fluctuations of the observed electric field from the model predictionsa re interpreteda s resultingf rom (1) the transientr esponseso f the ionospheret o small time variations of the IMF, (2) substorm effects, (3) neutral wind disturbances. Only the first type of fluctuations can be reproduced by the initial state prediction of the convection model. |
| Databáze: | OpenAIRE |
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