Analysis of Jupiter's Deep Jets Combining Juno Gravity and Time-varying Magnetic Field Measurements

被引:15
作者
Duer, Keren [1 ]
Galanti, Eli [1 ]
Kaspi, Yohai [1 ]
机构
[1] Weizmann Inst Sci, Dept Earth & Planetary Sci, 234 Herzl St, IL-76100 Rehovot, Israel
关键词
magnetohydrodynamics (MHD); planets and satellites: atmospheres; planets and satellites: gaseous planets; planets and satellites: interiors; planets and satellites: magnetic fields; SECULAR VARIATION; MOLECULAR-HYDROGEN; ZONAL FLOW; MODEL;
D O I
10.3847/2041-8213/ab288e
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Jupiter's internal flow structure is still not fully known, but can be now better constrained due to Juno's highprecision measurements. The recently published gravity and magnetic field measurements have led to new information regarding the planet and its internal flows, and future magnetic measurements will help to solve this puzzle. In this study, we propose a new method to better constrain Jupiter's internal flow field using the Juno gravity measurements combined with the expected measurements of magnetic secular variation. Based on a combination of hydrodynamical and magnetic field considerations we show that an optimized vertical profile of the zonal flows that fits both measurements can be obtained. Incorporating the magnetic field effects on the flow better constrains the flow decay profile. This will get us closer to answering the persistent question regarding the depth and nature of the flows on Jupiter.
引用
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页数:7
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