Simulation of Centrifugally Driven Convection in Jovian Inner Magnetosphere Using the Rice Convection Model

Wang, Yuxian1,2,3; Yang, Jian4; Guo, Xiaocheng1,2,3; Wang, Chi1,2,3; Blanc, Michel5,6

2023-03-01

10.1029/2022JA031132

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS   影响因子和分区

2169-9380

2169-9402

The dynamics of the Jovian inner magnetosphere are dominated by centrifugally driven convection. We use the newly developed Rice Convection Model-Jupiter to simulate the interchange instability and the plasma transport in the Jovian inner magnetosphere (L < 20 R-J). The model explicitly incorporates the active Io plasma source and its related pickup effect. A series of runs are performed to parametrically investigate how ionospheric conductances and Io source rate affect the convection system. Simulation results show that the iogenic plasma is transported outward in the form of elongated fingers. The outflow radial velocity in the quasi-steady state increases with further distances, reaching a value of over similar to 30 km/s at L = 20 R-J, and is in general higher than that of the inflow. It is found that the interchange instability and the convection can be significantly affected by the conductance and Io source rate. A larger Pedersen conductance sigma(p) or a lower source rate produces a slower radial inflow/outflow and a less prominent corotation lag of the outflow throughout the inner magnetosphere, while the angular velocity for the inflow is always near zero and not significantly affected. Furthermore, a uniform Hall conductance(sigma(H)) exerts little influence on the convection system, while the inhomogeneity of sigma(H) can significantly regulate the plasma convection.

Jupiter inner magnetosphere interchange instability simulation

SCI

英语

其他

National Key R&D program of China[2021YFA0718600] ; NNSFC["42150105","42188101"] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB 41000000] ; Key Research Program of the Chinese Academy of Sciences[ZDRE-KT-2021-3]

Astronomy & Astrophysics

Astronomy & Astrophysics

WOS:000943538200001

AMER GEOPHYSICAL UNION

SPACE SCIENCE

Web of Science

1.Chinese Acad Sci, Natl Space Sci Ctr, State Key Lab Space Weather, Beijing, Peoples R China
2.Chinese Acad Sci, Natl Space Sci Ctr, Key Lab Solar Act & Space Weather, Beijing, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
4.Southern Univ Sci & Technol, Dept Earth & Space Sci, Shenzhen, Peoples R China
5.Univ Toulouse III, Inst Rech Astrophys & Planetol, CNRS, CNES, Toulouse, France
6.Aix Marseille Univ, Lab Astrophys Marseille, CNRS, Toulouse, France

Wang, Yuxian,Yang, Jian,Guo, Xiaocheng,et al. Simulation of Centrifugally Driven Convection in Jovian Inner Magnetosphere Using the Rice Convection Model[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2023,128(3).

Wang, Yuxian,Yang, Jian,Guo, Xiaocheng,Wang, Chi,&Blanc, Michel.(2023).Simulation of Centrifugally Driven Convection in Jovian Inner Magnetosphere Using the Rice Convection Model.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,128(3).

Wang, Yuxian,et al."Simulation of Centrifugally Driven Convection in Jovian Inner Magnetosphere Using the Rice Convection Model".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 128.3(2023).