The north polar cap of Mars

Thickness of the north polar cap as seen by MARSIS and SHARAD at 213 locations. Thickness of the polar cap as predicted by MOLA assuming that the basement follows the long-wavelength regional slope.在213个测点上，由火星地下与电离层探测雷达（MARSIS）与火星浅层地下雷达（SHARAD）探测获取的火星北极冰盖厚度。基于基底遵循长波长区域坡度的假设，由火星轨道激光高度计（MOLA）预测得到的冰盖厚度。