Radiocarbon dating of the natural groundwater in the Ob-Zaisan folded region (Russia)

IF 4.9 Q2 ENGINEERING, ENVIRONMENTAL Groundwater for Sustainable Development Pub Date : 2024-09-07 DOI:10.1016/j.gsd.2024.101335

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Abstract

Groundwater in the Ob-Zaisan folded region (Russia) has significant differences in the stable isotope composition of oxygen and hydrogen, which cannot be explained by the geographical and relief features of the region. A probable reason for these differences could be climatic changes in the study area over the past tens of thousands of years. The method of the radiocarbon dating can be perfectly suited in order to determine such small geological ages. The dating of waters using ¹⁴C data gives an understanding of their residence time. It will make it possible to differentiate periods of recharge and accumulation of water in aquifers and track the changes of the water stable isotope composition over time. The estimated water age ranges from 650 to 19,000 years. The enrichment of δD and δ¹⁸O values with the decreasing of the water age indicates a gradual warming of the Novosibirsk region climate. These results logically complement the meteorological observations over the last century and may be useful for paleoclimate reconstructions of the region.

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奥布-斋桑褶皱地区（俄罗斯）天然地下水的放射性碳年代测定

俄罗斯奥布-泽桑褶皱地区的地下水在氧和氢的稳定同位素组成方面存在显著差异，该地区的地理和地形特征无法解释这种差异。造成这些差异的可能原因是研究地区过去数万年的气候变化。放射性碳年代测定法完全可以用来确定这些小的地质年代。利用 14C 数据对水域进行测年，可以了解其停留时间。这样就可以区分含水层中水的补给和积聚时期，并跟踪水的稳定同位素组成随时间的变化。水的年龄估计在 650 至 19 000 年之间。随着水年龄的降低，δD 和 δ18O值的富集表明新西伯利亚地区气候逐渐变暖。这些结果从逻辑上补充了上个世纪的气象观测结果，可能有助于该地区的古气候重建。

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来源期刊

Groundwater for Sustainable Development Social Sciences-Geography, Planning and Development

CiteScore

11.50

自引率

10.20%

发文量

152

期刊介绍： Groundwater for Sustainable Development is directed to different stakeholders and professionals, including government and non-governmental organizations, international funding agencies, universities, public water institutions, public health and other public/private sector professionals, and other relevant institutions. It is aimed at professionals, academics and students in the fields of disciplines such as: groundwater and its connection to surface hydrology and environment, soil sciences, engineering, ecology, microbiology, atmospheric sciences, analytical chemistry, hydro-engineering, water technology, environmental ethics, economics, public health, policy, as well as social sciences, legal disciplines, or any other area connected with water issues. The objectives of this journal are to facilitate: • The improvement of effective and sustainable management of water resources across the globe. • The improvement of human access to groundwater resources in adequate quantity and good quality. • The meeting of the increasing demand for drinking and irrigation water needed for food security to contribute to a social and economically sound human development. • The creation of a global inter- and multidisciplinary platform and forum to improve our understanding of groundwater resources and to advocate their effective and sustainable management and protection against contamination. • Interdisciplinary information exchange and to stimulate scientific research in the fields of groundwater related sciences and social and health sciences required to achieve the United Nations Millennium Development Goals for sustainable development.