Estimation of lake water—groundwater interactions in meromictic mining lakes by modelling isotope signatures of lake water
Estimation of lake water—groundwater interactions in meromictic mining lakes by modelling isotope signatures of lake water
复制标题
通过模拟湖水的同位素特征来估计分聚采矿湖中湖水与地下水的相互作用
DOI：
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发表时间：
2008
影响因子：
1.3
通讯作者：
K. Knoeller
中科院分区：
文献类型：
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作者：
A. Seebach;Severine Dietz;D. Lessmann;K. Knoeller
摘要提出了一种利用气象参数和野外资料模拟湖水同位素特征来评价湖水-地下水相互作用的方法。δ 18 O和δD变化的模拟提供了有关地下水流入一个部分混合的Lusatian矿湖的信息。因此，水平衡模型与同位素水平衡模型相结合，以估计模拟和测量的同位素签名之间的相似性在湖泊水体。该模型在不同的蒸发率下运行，预测了一个仅受天气条件控制的湖泊中的δ 18 O和δD值，该湖泊没有地下水流入或流出。模拟和测量的同位素值之间的比较表明，该湖是否由地下水或没有。此外，我们的研究表明，一个适应的克雷格和戈登模型[H. L.I.克雷格戈登氘和氧-海洋和海洋大气中的18种变化。在海洋学研究和古温度中的稳定同位素，斯波莱托，E。Tongiorgi（Ed.），pp. 9-130，Consiglio Nazionale delle Ricerche，Appropriatorio di Geologia Nucleare，比萨（1965）.]在温带地区的特定条件似乎是必要的。
Abstract A method is presented to assess lake water–groundwater interactions by modelling isotope signatures of lake water using meteorological parameters and field data. The modelling of δ18O and δD variations offers information about the groundwater influx into a meromictic Lusatian mining lake. Therefore, a water balance model is combined with an isotope water balance model to estimate analogies between simulated and measured isotope signatures within the lake water body. The model is operated with different evaporation rates to predict δ18O and δD values in a lake that is only controlled by weather conditions with neither groundwater inflow nor outflow. Comparisons between modelled and measured isotope values show whether the lake is fed by the groundwater or not. Furthermore, our investigations show that an adaptation of the Craig and Gordon model [H. Craig, L.I. Gordon. Deuterium and oxygen-18 variations in the ocean and the marine atmosphere. In Stable Isotopes in Oceanographic Studies and Paleotemperature, Spoleto, E. Tongiorgi (Ed.), pp. 9–130, Consiglio Nazionale delle Ricerche, Laboratorio di Geologia Nucleare, Pisa (1965).] to specific conditions in temperate regions seems necessary.