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zuan kong wen du hui fu ji ping heng tai wen du que ding
Author(s): 
Pages: 535-541
Year: Issue:  4
Journal: Journal of Glaciology and Geocryology

Keyword:  permafrosttemperature returnborehole heat dissipationequilibrium temperature;
Abstract: 多年冻土温度场在气候变化研究中具有重要意义,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,深钻孔在几年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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