Age estimation of individual lunar simple craters using the topography degradation model

These Python codes are designed for estimating model ages of individual lunar simple craters using topography degradation model. We provide topography data of South Ray crater to facilitate testing the codes. While running a single code to output all predicted formation ages for individual craters may seem straightforward, it can result in excessively long computation times due to the repeated iterative calculations involved (though iteration steps can be manually adjusted). To address this, the dating method has been split into multiple code files, each using different original topographic profiles with depth-to-diameter ratios of 0.218 (mean), 0.193 (shallow), and 0.232 (deep). Although this approach introduces some complexity in the overall structure, it makes each individual code more concise and user-friendly. Additionally, it helps keep the computation times manageable for each code.本套Python代码旨在基于地形退化模型，估算单个月球简单撞击坑的模型形成年龄。我们提供了南雷撞击坑（South Ray crater）的地形数据，以供代码测试使用。 尽管运行单个代码即可输出所有单个撞击坑的预测形成年龄，看似简便直接，但由于其中涉及重复迭代计算（迭代步数可手动调整），会导致计算时长过长。为解决该问题，本定年方法被拆分为多个代码文件，每个文件采用不同的原始地形剖面，其径深比（Depth-to-Diameter Ratio）分别为0.218（平均值）、0.193（浅型）与0.232（深型）。尽管该方案会增加整体结构的复杂度，但可使单个代码更为简洁易用，同时也能将每个代码的计算时长控制在合理范围内。