Deutsch
 
Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

 
 
DownloadE-Mail
  On the horizontal currents over the Martian magnetic cusp

AlMutawa, S. A., Majeed, T., AlAryani, O., Bougher, S., Withers, P., Haider, S. A., Morschhauser, A. (2021): On the horizontal currents over the Martian magnetic cusp. - Advances in Space Research, 68, 8, 3218-3224.
https://doi.org/10.1016/j.asr.2021.06.005

Item is

Externe Referenzen

einblenden:

Urheber

einblenden:
ausblenden:
 Urheber:
AlMutawa, Shahd A.1, Autor
Majeed, Tariq1, Autor
AlAryani, Omar1, Autor
Bougher, Stephen.W.1, Autor
Withers, Paul1, Autor
Haider, Syed A.1, Autor
Morschhauser, Achim2, Autor              
Affiliations:
1External Organizations, ou_persistent22              
22.3 Geomagnetism, 2.0 Geophysics, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum, ou_146030              

Inhalt

einblenden:
ausblenden:
Schlagwörter: -
 Zusammenfassung: Localized crustal magnetization over heavily cratered southern hemisphere at Mars gives rise to open magnetic field configurations which interact with the solar wind magnetic field to form magnetic cusp. The downward acceleration of energetic electrons in these cusps can produce aurora and an extended topside ionospheric structure over regions of magnetic anomalies. We report plasma collisions with the neutral atmosphere at one of the Martian cusps located at 82oS and 180oE, where the crustal field is strong with a radial component ~35° from the local zenith. We find that the dynamo region in the upper ionosphere of Mars is located between altitudes of 102 km and 210 km. The electrons in this region are constrained to gyrate along magnetic field lines while ions are dragged by neutrals and move along the direction of applied force. In the absence of the electric field, the horizontal current in the Martian dynamo is generated by the differential motion of ions and electrons. We find that the bulk of the current density is equatorward and confined within the Martian dynamo near the ionospheric peak with a magnitude of ~3.5 µA/m2. We also find that the eastward current density of magnitude ~0.4 µA/m2 peaking near the upper boundary of the Martian dynamo is generated by magnetized ions in the F × B direction.

Details

einblenden:
ausblenden:
Sprache(n): eng - Englisch
 Datum: 2021-06-112021
 Publikationsstatus: Final veröffentlicht
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: DOI: 10.1016/j.asr.2021.06.005
GFZPOF: p4 T3 Restless Earth
 Art des Abschluß: -

Veranstaltung

einblenden:

Entscheidung

einblenden:

Projektinformation

einblenden:

Quelle 1

einblenden:
ausblenden:
Titel: Advances in Space Research
Genre der Quelle: Zeitschrift, SCI, Scopus
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 68 (8) Artikelnummer: - Start- / Endseite: 3218 - 3224 Identifikator: CoNE: https://gfzpublic.gfz-potsdam.de/cone/journals/resource/journals13
Publisher: Elsevier