Abstract. Water isotopes (δ²H and δ¹⁸O) were analyzed in samples collected in lakes associated to riverine systems in northeastern Germany throughout 2020. The dataset (Aichner et al., 2021) is derived from water samples collected at a) lake shores (sampled in March and July 2020); b) buoys which were temporarily installed in deep parts of the lake (sampled monthly from March to October 2020); c) multiple spatially distributed spots in four selected lakes (sampled in September 2020); d) the outflow of Müggelsee (sampled biweekly from March 2020 to January 2021). At shores, water was sampled with a pipette from 40–60 cm below water surface and directly transferred into a measurement vial, while at deeper parts of the lake a Limnos water sampler was used to obtain samples from 1 m below surface. Isotope analysis was conducted at IGB Berlin, using a Picarro L2130-i cavity ring-down spectrometer. The data give information about the seasonal isotope amplitude in the sampled lakes and about spatial isotope patterns in different branches of the associated riverine systems.

中文翻译：

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德国东北部湖泊水同位素的空间和季节模式

摘要。水同位素（δ ² H 和 δ ¹⁸O) 在整个 2020 年在德国东北部与河流系统相关的湖泊中收集的样本中进行了分析。数据集（Aichner 等人，2021 年）来自 a) 湖岸收集的水样（2020 年 3 月和 7 月采样）；b) 临时安装在湖水深处的浮标（2020 年 3 月至 10 月每月采样一次）；c) 四个选定湖泊的多个空间分布点（2020 年 9 月采样）；d) Müggelsee 的流出（2020 年 3 月至 2021 年 1 月每两周采样一次）。在岸边，用移液管从水面以下 40-60 cm 处取样并直接转移到测量瓶中，而在湖的更深处，使用 Limnos 水采样器从水面以下 1 m 处采集样品。同位素分析在柏林 IGB 进行，使用 Picarro L2130-i 腔衰荡光谱仪。这些数据提供了有关采样湖泊中季节性同位素振幅和相关河流系统不同分支中空间同位素模式的信息。