| 钻孔温度恢复及平衡态温度确定 |
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| 引用本文： | 王保来.钻孔温度恢复及平衡态温度确定[J].冰川冻土,1993,15(4):535-541. |
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| 作者姓名： | 王保来 |
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| 作者单位： | 中国科学院兰州冰川冻土研究所 加拿大渥太华大学地球科学系 |
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| 摘 要： | 多年冻土温度场在气候变化研究重要意义，因为多年冻土具有记忆古温度场的能力。钻探过程对冻土原状温度具有深刻影响，深钻孔在几个内难以恢复到天然状态。热扩散理论表明，５０年后钻孔温度才能恢复至平衡状态。控制钻孔温度恢复的对数方程为求得冻土平衡态温度场提供了有效手段。
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| 关 键 词： | 多年冻土 温度 钻孔 平衡态温度 |
Temperature Return and Determination of Equilibrium Temperature |
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| Wang Baolai.Temperature Return and Determination of Equilibrium Temperature[J].Journal of Glaciology and Geocryology,1993,15(4):535-541. |
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| Authors: | Wang Baolai |
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| Abstract: | Deep permafrost thermal regime has significant implications in climatic change studies because it preserves information on the history of near-surface temperatures.
The disturbance caused by drilling to permafrost thermal condition is so profound that even after several years of drilling deep boreholes can not return to their thermal equilibrium (undisturbed) state. Heat dissipation theory indicates that the time necessary for a borehole of several hundred metres deep to attain temperature equilibrium is approximately 50 years. The temperature return in a borehole is a remarkably good fit to the logarithmic relationship which provides an effective means of determining undisturbed (equilibrium) temperatures. |
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| Keywords: | permafrost temperature return borehole heat dissipation equilibrium temperature |
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