ABSTRACT Coastal regions, and in particular islands where precipitation from clouds formed out at sea occurs for the first time, are prime candidates for regions where 2H and 18O composition of precipitation will deviate significantly from the global mean geographic and physiographic trends of vapour-transport patterns. The results reported here are the outcome of a study that aimed to test this hypothesis by ‘isotopographically’ mapping the characteristic δ2H and δ18O signatures of Scottish freshwaters. The resulting isotope abundance landscapes or ‘isoscapes’ will underpin studies aiming to authenticate origin of Scottish produce but may also offer a baseline against which environmental changes could be assessed. Between April 2011 and May 2012 freshwater samples were collected from 127 different freshwater lochs and reservoirs across Scotland, and analysis results were compared to precipitation data provided by the British Geological Survey. Here we present the results of the 2H and 18O analyses of these water samples as well as the first detailed Scotland freshwater isoscapes with a grid resolution of about 5 × 5 km (0.05 degrees).

中文翻译：

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苏格兰大气淡水湖 2H 和 18O 组成的空间变异性

摘要 沿海地区，特别是首次出现海上形成的云降水的岛屿，是降水的 2H 和 18O 组成将显着偏离全球平均地理和地理趋势的地区的主要候选者。 . 此处报告的结果是一项研究的结果，该研究旨在通过“同位素”绘制苏格兰淡水的特征 δ2H 和 δ18O 特征来检验这一假设。由此产生的同位素丰度景观或“isoscapes”将支持旨在验证苏格兰产品起源的研究，但也可能提供一个基线，用于评估环境变化。2011 年 4 月至 2012 年 5 月期间，从苏格兰的 127 个不同的淡水湖泊和水库收集了淡水样本，并将分析结果与英国地质调查局提供的降水数据进行了比较。在这里，我们展示了这些水样的 2H 和 18O 分析结果，以及网格分辨率约为 5 × 5 公里（0.05 度）的第一个详细的苏格兰淡水等值线图。