论文标题
冲刺，伸展断层和冰川的影响对冥王星最大的月亮夏隆的覆盖记录：对Kuiper Belt物体进化的影响
Impacts of thrusting, extensional faulting, and glaciation on cratering records of Pluto's largest moon Charon: Implications for the evolution of Kuiper belt objects
论文作者
论文摘要
使用新视野航天器获得的最高分辨率图像的系统地貌映射和详细的地貌分析揭示了冥王星最大的冥王星月亮夏隆（Charon）的一系列可区分地形的存在，这些地形未经早期研究详细研究。我们工作的最重要发现包括（1）大型火山口（直径> 30-40 km）及其火山口边缘脊沿几个北向东的东部边缘，向东，向东，在Oz Terra中施加范围，（2）凸脊旋转，lobate knob trabors and tobrins of thrab and prosem opem ope glace opempial glace resemprine rosempriand rosempriand rosempriand rosemprial comemmbling glace resemmbling（树突状通道系统包含悬挂山谷，（4）由平行脊，旋钮列和凹槽定义的本地横向表面，长度大于40-50 km。可以通过景观进化模型来解释上述观察结果和夏隆遇到半球的地形二分法，该模型涉及（i）巨大的影响，产生了巨大的影响，该模型造成了vulcan Planitia盆地和沿北部边缘的扩展断层区（II），（ii）持续的N2-冰的底层水上的瞬时大气层，并具有延伸的水，并延伸了水上的水。 （iii）区域冰川侵蚀和较早的影响的射流岩石沉积物从Oz Terra的高地沉积到瓦肯耕种的低地盆地，（iv）Syn-Graciation Northtrent趋势的推力解释为Charon distinning的dispinning诱导，并在全球范围内的Dem-Ice plania coperia plania coperface N2 Ice in 2 cool coperface coperface N2 Ice层面上。瓦肯计划的填充本来可以伴随着冰毒的填充。冲击火山口的广泛修饰意味着，当用于测试Kuiper带对象的形成机理时，来自Charon的火山口尺寸频率分布应作为下限。
Systematic geomorphological mapping and detailed landform analysis using the highest resolution images obtained by the New Horizons spacecraft reveal the presence of a range of differentiable terrains on Charon, the largest moon of Pluto, that were not examined in detail by the early studies. The most important findings of our work include (1) truncation and omission of large craters (diameters > 30-40 km) and their crater rim ridges along the eastern edges of several north-trending, eastward-convex, arcuate ranges in Oz Terra, (2) lobate ridges, lobate knob trains, and lobate aprons resembling glacial moraine landforms on Earth, (3) dendritic channel systems containing hanging valleys, and (4) locally striated surfaces defined by parallel ridges, knob trains, and grooves that are > 40-50 km in length. The above observations and the topographic dichotomy of Charon' s encountered hemisphere can be explained by a landscape-evolution model that involves (i) a giant impact that created the Vulcan Planitia basin and the extensional fault zone along its northern rim, (ii) a transient atmosphere capable of driving N2-ice glacial erosion of the water-ice bedrock and transporting water-ice debris to sedimentary basins, (iii) regional glacial erosion and transport of earlier emplaced impact ejecta deposits from the highlands of Oz Terra into the lowland basin of Vulcan Planitia, (iv) syn-glaciation north-trending thrusting interpreted to have been induced by Charon' s despinning, and (v) the development of a water-ice debris cover layer over subsurface N2 ice below Vulcan Planitia during global deglaciation. The infilling of the Vulcan Planitia could have been accompanied by cryovolcanism. The extensive modification of impact craters means that the crater size-frequency distributions from Charon should serve only as a lower bound when used to test the formation mechanism of Kuiper belt objects.
