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首页> 外文期刊>Permafrost and Periglacial Processes >A model for stable isotopes of residual liquid water and ground ice in permafrost soils using arbitrary water chemistries and soil-specific empirical residual water functions
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A model for stable isotopes of residual liquid water and ground ice in permafrost soils using arbitrary water chemistries and soil-specific empirical residual water functions

机译：多余水化学和土壤特定经验剩余水分稳定液体水和土壤残留液水和地面冰稳定同位素的模型

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摘要

We present the basic theory of stable isotopes (delta(O-18) and delta(D)) of freezing water solutions in the environment set within a water isotope-augmented version of FREZCHEM(V15). We validate this model with a couple of examples. The isotope-capable FREZCHEM is simplified to run much faster using set-piece initial chemistries to calculate the freezing temperature of the remaining water. The fast version is embedded in a semi-empirical model for residual liquid water in sub-zero soils. A uniform specific soil column is driven with a defined seasonal temperature wave. The co-isotopes of the residual water and ice are calculated as a function of time and depth. The model is applied to clayey soils of the sort sampled in detail in a 10 (10 to 20 m) core suite from the Mackenzie Delta, Canada. The stable isotopes are compared to the model ones and the match is quite good except in the uppermost 2.5 m, where an upturn in the model delta(O-18) curve is smaller. If the upper 2.5 m of icy soil is populated with "modern" water, and below by late glacial meltwater the size of the upturn in delta(O-18) starting at 2.5 m is reproduced by the model.
机译：我们介绍了在弗里茨姆（V15）的水同位素的环境中设定的环境中的冷冻水溶液的稳定同位素（Delta（O-18）和Delta（D））的基本理论。我们用几个示例验证此模型。有能力的Frezchem简化了使用设定件初始化学物质来计算剩余水的冷冻温度的速度更快。快速版本嵌入在零土壤中残留液态水的半实验模型中。用限定的季节性温度波驱动均匀的特定土柱。残留水和冰的共同同位素作为时间和深度的函数计算。该模型应用于加拿大Mackenzie Delta的10（10至20米）的核心套件中详细采样的粘土土壤。将稳定同位素与模型稳定的同位素进行比较，并且除了最高的2.5米外，匹配非常好，其中模型Δ（O-18）曲线中的UPTURE较小。如果将2.5米的冰冷土壤填充有“现代”水，低于晚期冰川熔融水，则达到2.5米的达达（O-18）的转型的大小是由模型再现的。

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