Mars does not have an intrinsic dipolar magnetic field like Earth,but features strong magnetic crustal fields on the southern hemisphere.The intensity of the crustal field suggests it should have an effect on Martian ions escape,but the efficiency of this effect is still doubted.Mars Atmosphere and Volatile Evolution(MAVEN)was launched on2013and its shorter orbital period and lower altitude can provide more information of Martian ionosphere.
展开▼
