Acuña M H, Ness N F
Science. 1980 Jan 25;207(4429):444-6. doi: 10.1126/science.207.4429.444.
The intrinsic magnetic field of Saturn measured by the high-field fluxgate magnetometer is much weaker than expected. An analysis of preliminary data combined with the preliminary trajectory yield a model for the main planetary field which is a simple centered dipole of moment 0.20 +/- 0.01 gauss-Rs(3) = 4.3 +/- 0.2 x 10(28) gauss-cm(3) (1 Rs = 1 Saturn radius = 60,000 km). The polarity is opposite that of Earth, and, surprisingly, the tilt is small, within 2 degrees +/- 1 degrees of the rotation axis. The equatorial field intensity at the cloud tops is 0.2 gauss, and the polar intensity is 0.56 gauss. The unique moon Titan is expected to be located within the magnetosheath of Saturn or the interplanetary medium about 50 percent of the time because the average subsolar point distance to the magnetosphere is estimated to be 20 Rs, the orbital distance to Titan.
由高场磁通门磁力计测量的土星固有磁场比预期的要弱得多。对初步数据与初步轨道进行分析后得出了一个主要行星磁场模型，该模型是一个简单的中心偶极子，其磁矩为0.20±0.01高斯·Rs³ = 4.3±0.2×10²⁸高斯·厘米³（1 Rs = 1个土星半径 = 60,000千米）。其极性与地球相反，令人惊讶的是，倾斜度很小，在旋转轴的2度±1度范围内。云顶处的赤道场强为0.2高斯，极场强为0.56高斯。由于估计日下点到磁层的平均距离为20 Rs（即土卫六的轨道距离），所以预计独特的卫星土卫六约有50%的时间处于土星的磁鞘或行星际介质中。
