Ceres has an abundance of long runout landslides with more slides near the poles. Here we simulate these landslides using a discrete element model. Our simulations indicate that long runout landslides on Ceres do not require the presence of fluid or slippery ice to explain their mobility. We find that lower fall heights and larger volumes lead to increased slide mobility while the relatively low surface gravity of Ceres, compared to the Earth and Mars, reduces slide mobility and affects slide morphology. We show that latitudinal trends in number of slides and slide morphology are more consistent with trends in topography than expected trends in near‐surface ice content. These morphological trends with topography are also consistent with the results of our landslide simulations. We argue that landslide morphology cannot be used to draw conclusions about local ice content and composition. However, the higher abundance of long runout landslides on Ceres relative to Vesta may be related to its higher global ice content or greater endogenic activity.

中文翻译：

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地形控制谷粒的滑坡形态和流动性

谷神星有大量的长跳动滑坡，两极附近有更多的滑坡。在这里，我们使用离散元模型来模拟这些滑坡。我们的模拟表明，谷神星上的长跳动滑坡不需要流体或滑冰来解释它们的活动性。我们发现，与地球和火星相比，较低的坠落高度和较大的体积导致增加的滑坡活动性，而谷神星的相对较低的表面重力降低了滑坡活动性并影响了滑坡形态。我们发现，与近地表冰含量的预期趋势相比，滑坡数量和滑坡形态的纬度趋势与地形趋势更加一致。这些具有地形的形态趋势也与我们的滑坡模拟结果一致。我们认为滑坡形态不能用来得出有关局部冰含量和组成的结论。然而，相对于Vesta，Ceres上长径流滑坡的丰度较高，可能与其较高的全球冰含量或较高的内生活动有关。