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Stationary microtemperature borehole measurements and analysis of temporal impacts
Environmental Earth Sciences ( IF 2.8 ) Pub Date : 2021-01-16 , DOI: 10.1007/s12665-020-09353-0
Tamar Jimsheladze , Günter Buntebarth , Nino Kapanadze , George Melikadze

Highly resolved temperature records in a borehole in Western Georgia are applied and demonstrate several impacts during the registration of 15 months at depths of 100, 175 and 250 m. The long-term trend of the temperature at z = 100 m yields a surface temperature variation of 0.015 K/year which is going on since 90 to 110 years. It coincides with the settlement history where forest has been cut down to create cropland. Heavy rainfalls cause a water inflow to the borehole and change the water temperature at all depths by 0.6 to 1.3 K. The temperature equalization process results in the temperature diffusivity and thermal conductivity. Pressure-induced fluid flow is detected during the winter half year which is probably caused by regional subsurface water flow from the Caucasus mountains.



中文翻译:

固定式微温钻孔测量和时间影响分析

在佐治亚州西部的一个钻孔中使用了高度解析的温度记录,并显示了在15个月的记录中100、175和250 m深度的几种影响。z  = 100 m处温度的长期趋势会产生0.015 K /年的表面温度变化,此变化自90到110年以来一直持续。这与定居历史相吻合,在定居历史中,森林被砍伐成农田。大雨导致水流入井眼,使各个深度的水温变化0.6至1.3K。温度均衡过程导致温度扩散率和导热率。在冬季的半年中检测到压力引起的流体流动,这可能是由于来自高加索山脉的区域性地下水流引起的。

更新日期:2021-01-18
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