Arctic lake drainage types and drainage month (2000-2020)

Lake drainage events may cause catastrophic flooding in the Arctic, impacting topography, ecosystems, and permafrost carbon dynamics. Among the 3,955 drainage events recorded between 2000 and 2020, lateral drainage was the predominant type, with most events occurring in May and June. In this context, lake drainage events are defined as those involving lakes with an initial area greater than 10 hectares and a loss of more than 50% of their surface area.湖泊排水事件可能在北极地区引发灾难性洪水，对地形、生态系统以及永久冻土碳动态产生影响。在2000年至2020年记录的3955起排水事件中，侧向排水（lateral drainage）为主要类型，且多数事件发生于5月和6月。在此背景下，湖泊排水事件被定义为初始面积大于10公顷、地表面积损失超过50%的湖泊相关事件。