火星表面典型壁垒撞击坑地貌晕染图

封面图片展示了火星表面一个典型的壁垒撞击坑 (Rampart Crater)，其直径为 27.86 km，中心坐标为 (23.21° N, 207.76° E)。中国首次火星探测任务“天 问一号”的“祝融号”火星车着陆的乌托邦平原 (Utopia Planitia) 广泛分布各种规模的壁垒撞击坑。通过对这些壁垒撞击坑的空间分布、形貌特征、形 成年代和撞击挖掘深度等开展深入研究，并结合“祝融号”火星车和“天问一号”轨道器次表层探测雷达的解译结果，将有助于分析地下水冰层的时空特 征，重建区域地下水冰环境演变历史。相关研究进展，详见《遥感学报》2021 年第 7 期 第 1374—1384 页“火星伊西底斯平原的壁垒撞击坑：遥感分 析及环境启示意义”一文。

Relief map of a typical Rampart Crater on the surface of Mars

The cover image shows a typical rampart crater on the surface of Mars. The diameter of the crater is 27.86 km, and the center coordinates are (23.21° N, 207.76° E). The Utopia Planitia, where China's first Mars rover Zhurong landed, is widely distributed with rampart craters of various sizes. Through in-depth research on the spatial distribution, morphological characteristics, formation age and excavation depth of these rampart craters, and combine with the interpretation of the data acquired by the subsurface exploration radar onboard the Zhurong rover and the Tianwen-1 orbiter. It will help analyze the temporal and spatial characteristics and reconstruct the evolution of the regional subsurface water/ice-rich layer. For more relevant research, please refer to pages 1374—1384, 2021, Issue 7, of the “Rampart Craters in the Isidis Planitia, Mars: Remote sensing analysis and environment implications.”