Magnetometer measurements from the Cassini Earth swing-by
| Autor: | David J. Southwood, George Siscoe, Christopher T. Russell, Edward J. Smith, A. Balogh, Stanley W. H. Cowley, F. Gleim, Bruce T. Tsurutani, G. Erdos, Michele K. Dougherty, Karl-Heinz Glassmeier, Fritz M. Neubauer |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Atmospheric Science
Magnetometer Soil Science Magnetosphere Plasmasphere Aquatic Science Oceanography law.invention Magnetosheath Geochemistry and Petrology law Saturn Earth and Planetary Sciences (miscellaneous) Earth-Surface Processes Water Science and Technology Physics Ecology Spacecraft business.industry Paleontology Forestry Geophysics Space and Planetary Science Physics::Space Physics Magnetopause Astrophysics::Earth and Planetary Astrophysics business Noise (radio) |
| Zdroj: | Journal of Geophysical Research: Space Physics. 106:30109-30128 |
| ISSN: | 0148-0227 |
| Popis: | Magnetometer data recorded by the Cassini spacecraft during the spacecraft's Earth swing-by maneuver in August 1999 are discussed. The primary purpose of this paper is to show the instrument's performance in detection of magnetic phenomena in a planetary environment. Companion papers put the data in a broader geophysical context. The low noise and high time resolution of the instrument coupled with the unusual orbit did produce new information about old phenomena (e.g., a whistler-like signal inside the near-subsolar magnetopause, lower hybrid noise in the current sheets around a magnetosheath field null, and sharp changes in the ion cyclotron wave spectrum between the boundary layer and magnetosphere proper). The detection of irregular isolated 1–2 s duration small-amplitude field strength dips in the vicinity of the nightside plasma trough appear to constitute a new discovery, tentatively identified as being evidence of plasmasphere interchange instability during a lull in background convection. The absolute scalar element of the instrument worked to plan, operating within 4 RE of Earth in parallel with the fluxgate sensors. In all respects, instrument performance bodes well for the Saturn orbital phase of the mission. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text