Glacier recession in response to climate warming has resulted in an increase in the size and number of glacial lakes. Glacial lakes are an important focus for research as they impact water resources, glacier mass balance, and some produce catastrophic glacial lake outburst floods (GLOFs). Glaciers in Peru have retreated and thinned in recent decades, prompting the need for monitoring of ice- and water-bodies across the cordilleras. These monitoring efforts have been greatly facilitated by the availability of satellite imagery. However, knowledge gaps remain, particularly in relation to the formation, temporal evolution, and catastrophic drainage of glacial lakes. In this paper we address this gap by producing the most current and detailed glacial lake inventory in Peru and provide a set of reproducible methods that can be applied consistently for different time periods, and for other mountainous regions.

The new lake inventory presented includes a total of 4557 glacial lakes covering a total area of 328.85 km². In addition to detailing lake distribution and extent, the inventory includes other metrics, such as dam type and volume, which are important for GLOF hazard assessments. Analysis of these metrics showed that the majority of glacial lakes are detached from current glaciers (97%) and are classified as either embedded (i.e. bedrock dammed; ~64% of all lakes) or (moraine) dammed (~28% of all lakes) lakes. We also found that lake size varies with dam type; with dammed lakes tending to have larger areas than embedded lakes. The inventory presented provides an unparalleled view of the current state of glacial lakes in Peru and represents an important first step towards (1) improved understanding of glacial lakes and their topographic and morphological characteristics and (2) assessing risk associated with GLOFs.

应对气候变暖的冰川衰退导致冰川湖的规模和数量增加。冰川湖是研究的一个重要焦点，因为它们会影响水资源、冰川物质平衡，并且一些会产生灾难性的冰川湖溃决洪水 (GLOF)。近几十年来，秘鲁的冰川已经消退和变薄，这促使需要对整个科迪勒拉山脉的冰体和水体进行监测。卫星图像的可用性极大地促进了这些监测工作。然而，知识差距仍然存在，特别是在冰川湖的形成、时间演变和灾难性排水方面。

新公布的湖泊清单包括共计 4557 个冰川湖泊，总面积 328.85 平方公里². 除了详细说明湖泊分布和范围外，清单还包括其他指标，例如大坝类型和体积，这些对于 GLOF 危害评估很重要。对这些指标的分析表明，大多数冰川湖泊与现有冰川分离（97%），并被归类为嵌入（即基岩筑坝；约占所有湖泊的 64%）或（冰碛）筑坝（约占所有湖泊的 28%） ) 湖泊。我们还发现湖泊大小因大坝类型而异；堰塞湖的面积往往比嵌入式湖泊的面积更大。所提供的清单提供了对秘鲁冰川湖现状的无与伦比的看法，代表了迈向 (1) 提高对冰川湖及其地形和形态特征的了解以及 (2) 评估与 GLOF 相关的风险的重要第一步。