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您的检索式：作者名="Stepan Varlamov"
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| 1 | 雅库特铁路路堤富冰冻土的温度研究(英文)显示文摘由Tommot到Niznhy Bestyakh铁路建设和运行的主要难题是横贯高含冰量冻土区域。自2007年以来,监测研究已经由麦尔尼科夫冻土研究所在该铁路试验段进行。其中一个监测计划的主要目标是评估不同设计的堤防地面热状况。观测巷道中使用高、低和零堤防热管及保温绝缘材料。实地研究表明,每年高路堤的散热效果要小于低路堤。阴影边坡下方的土壤趋于低温,而更多的边坡下方的多年冻土上限是由于地表水的增温效应降低所导致。冬季冻土路堤材料导致其冻胀,其上升的速度使其形成更高的堤防。夏季,零堤的位置处于切除活跃层会导致常年解冻区域的发展,有着较厚的填充和更深层次季节性融化。热虹吸和绝缘材料使得上坡护堤和下坡护堤产生轻微冷却效果。悬雪棚并未证明可以有效地降低地面温度。建议采取额外措施,以降低地面温度,减少巷道的季节性融化。 | Stepan Varlamov | 2014 | 黑龙江大学工程学报2014，5，3： | 1 |
| 2 | 当前气候变化下的雅库特中部地区土壤温度状况预测(英文)显示文摘预测土壤温度采用通用的年平均气象数据中的空气温度和积雪深度。为改善冻土的预测可靠性,将每月的气象数据考虑在计算方法中。 | Peter Permyakov Stepan Varlamov Pavel Skryabin Yara Ckachkov | 2014 | 黑龙江大学工程学报2014，5，3： | 0 |
| 3 | 多年冻土区表层土壤冻融的季节动态(英文)显示文摘建立了考虑地基孔隙溶液迁移因素影响的冻胀计算数学模型。提出了管道下方土壤季节性冻融的数值试验结果。 | Peter Permyakov Georgy Popov Stepan Varlamov | 2014 | 黑龙江大学工程学报2014，5，3： | 0 |
| 4 | Current climate change effects on the ground thermal regime in Central Yakutia显示文摘The evolution of ground thermal state has been studied to assess impacts of current climatic warming on permafrost in Central Yakutia. The analysis of long-term data of regional weather stations has revealed one of the highest increasing trends in mean annual air temperature in northern Russia. A forecast of surface air temperature fluctuations has been made by applying a frequency analysis method. Monitoring of ground thermal conditions allows us to identify inter-annual and long-term variability among a wide range of natural conditions. Experimental research has indicated a long-term dynamics of ground thermal state evolution: ground temperatures at the depth of zero annual amplitude and seasonally thawed layer depth. Long-term variability of thaw depth shows near-zero to weak positive trends in small valleys in contrast to weak negative trends on slopes. With significant climatic warming, the thermal state of near-surface layers of permafrost demonstrates steadiness. Anthropogenic impacts on ground thermal regime in various terrain types have been qualitatively evaluated. Clear-cutting, ground cover stripping, and post-fire deforestation in inter-alas type terrains result in a significant increase of temperature and seasonal ground thaw depth, as well as adverse cryogenic processes. The dynamics of mean annual ground temperature in slash and burn sites have been evaluated in reference to stages of successive vegetation recovery. | Stepan Varlamov Yuri Skachkov Pavel Skryabin | 2014 | Research in Cold and Arid Regions2014，6，4： | 0 |
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