Abstract

Isotope studies (δD and δ¹⁸O) were performed for the glaciers of Severny Island (Novaya Zemlya Archipelago). The studied glaciers were characterized by narrow range-of δD and δ¹⁸O values (from –15.4 to –17.6 ‰ and from –110.9 to –127.1‰, respectively). The samples of glacier ice form a linear trend within the δD–δ¹⁸O coordinates with low slope (s < 7). The isotope signature of water runoff from Severny Island point mainly to the glacial origin of the waters. The isotope parameters of glacial ice from the Novaya Zemlya Archipelago deviated from the values expected for western transfer of air masses under the latitudinal effect compared to glacial ice from other Arctic archipelagoes (Svalbard, Severnaya Zemlya, and Franz Josef Land). These parameters were similar to those for atmospheric precipitation over the continent near the town of Amderma. The slope of the trend, deuterium excess values, and narrow variation range of δD and δ¹⁸O values of ice might be caused by seasonal freezing of meltwater in firn layers within the closed system condition.

中文翻译：

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Novaya Zemlya群岛的Severny岛的冰川同位素参数（δD，δ18 O和d）的形成和水径流

摘要

同位素研究（δD和δ ¹⁸ O）的谢韦尔内岛（新地岛群岛）的冰川进行。由窄范围δD-的和δ所研究的冰川进行了表征^18个O值（从-15.4至-17.6‰和从-110.9至-127.1‰，分别地）。冰川冰样品在δD–δ ¹⁸ O坐标内以低斜率（s<7）。从塞韦尼岛出发的径流的同位素特征主要是水域的冰川起源。与其他北极群岛（斯瓦尔巴群岛，塞韦尔纳亚·泽姆利亚和弗朗茨·约瑟夫·兰德）的冰川冰相比，诺瓦亚·泽姆利亚群岛的冰川冰的同位素参数与纬向作用下西向气团转移在纬向效应下的期望值有所偏离。这些参数与Amderma镇附近大陆上的大气降水参数相似。的趋势，过量氘值，以及δD的窄的变化范围和δ的斜率^18个冰的O值可能是由在封闭系统内的条件粒雪层融水的季节性冻结引起的。