助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   seasonal frozen depth 的翻译结果: 查询用时:0.036秒
图标索引 在分类学科中查询
所有学科
地球物理学
更多类别查询

图标索引 历史查询
 

seasonal frozen depth
相关语句
  季节冻结
     It is not cold enough to form permafrost. According to the temperature measurement from pits and boreholes (in July 1992), the ground temperature is 5 0~8 4℃ in the depth of 1 0~2 2 m, and shallow ground water temperature is 6 0~7 8℃. The seasonal frozen depth is 1 0~2 0 m.
     据1992年7月间试坑和钻孔测温,在1.0~2.2m深处地温为5~8.4℃,浅层地下水温6.0~7.8℃,由此判断不存在多年冻土,季节冻结深度为1.0~2.0m。
短句来源
  季节冻结深度
     It is not cold enough to form permafrost. According to the temperature measurement from pits and boreholes (in July 1992), the ground temperature is 5 0~8 4℃ in the depth of 1 0~2 2 m, and shallow ground water temperature is 6 0~7 8℃. The seasonal frozen depth is 1 0~2 0 m.
     据1992年7月间试坑和钻孔测温,在1.0~2.2m深处地温为5~8.4℃,浅层地下水温6.0~7.8℃,由此判断不存在多年冻土,季节冻结深度为1.0~2.0m。
短句来源
  相似匹配句对
     The hazard of seasonal frozen soil
     季节性冻土的危害分析
短句来源
     Water Movement in Seasonal Unsaturated Frozen Soil
     水分在季节性冻土中的运动
短句来源
     Frozen Yogurt
     冷冻酸奶
短句来源
     STATISTICAL CHARACTERISTICS OF SEASONAL PERMAFROST IN JILIN, CHINA AND THE METHOD FOR DETERMINING THE FROZEN DEPTH
     吉林省季节冻深的统计特征及计算冻深的确定方法
短句来源
     Interdecadal Variability of Seasonal Frozen Ground Depth and Its Climatic Reasons in Hexi Corridor of Gansu
     甘肃河西季节冻结深度年代际变化特征及其气候成因分析
短句来源
查询“seasonal frozen depth”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
没有找到相关例句


The climate in the Qinghai-Xizang Plateau has been becoming warmer since the late 1970's. The obvious warmer winter and smaller annual range of air temperature have resulted in a regional permafrost degradation in the pla teau. The evidences which include the decrease of seasonal thawing depth, increase of seasonal freezing depth and the thawed layer are found between the active layer and the underlain permafrost in the regions near the permafrost lower altitudinal limit or near taliks. The...

The climate in the Qinghai-Xizang Plateau has been becoming warmer since the late 1970's. The obvious warmer winter and smaller annual range of air temperature have resulted in a regional permafrost degradation in the pla teau. The evidences which include the decrease of seasonal thawing depth, increase of seasonal freezing depth and the thawed layer are found between the active layer and the underlain permafrost in the regions near the permafrost lower altitudinal limit or near taliks. The ground te mperatures from surface to 40 m depth, especially to 20 m depth, have been affected by the climate warming in various degrees. Comparision of the ground temperature in the past 15-20 years shows that the mean annual ground temperatures rise about 0.3-0.5℃ in the regions of seasonal frozen ground, river taliks and island permafrost regions where ice content of soil is relatively small. In the regions underlain continuously by permafrost, the mean annual ground temperature rises about 0.1-0.3 ℃. According to the research results of climate prediction and taking the man-made factors into consideration, the permafrost changes in the following 50 years are estimated in the paper. Given a 1 ℃ air temperature warming in another 50 years, the mean annual ground temperature in the permafrost region will increase by about 0.4-0.5 ℃ ; the lower limit of permafrost will rise about 150- 200 m; most of the present permafrost of which the thickness is less than 10 m will be melted; the main body of the present island permafrost will disappear, leaving traces of frozen ground lay deeply under the ground surface (of which the upper table will be deeper than 10 m); and the total area of permafrost will diminish dramastically.

青藏高原从70年代后期气温持续转暖,造成高原多年冻土呈区域性退化状态,已不同程度地影响到40m深以上的地温,特别是20m以上的浅层地温最为明显。近15~20a以来地温对比表明,高原上季节冻土区,河流融区及岛状冻土区内含冰(水)量较小的地段,年平均地温升高0.3~0.5℃,大片连续多年冻土区内上升0.1~0.3℃。另外,考虑高原气候变化趋势及人为因素的影响对未来50a高原多年冻土进行预测。

Field investigation shows no permafrost in the interior of the Zoige Plateau. The mean annual air temperature is 0.6~3.3℃, and the annual range of air temperature is 19.1~21 2℃ . It is not cold enough to form permafrost. According to the temperature measurement from pits and boreholes (in July 1992), the ground temperature is 5 0~8 4℃ in the depth of 1 0~2 2 m, and shallow ground water temperature is 6 0~7 8℃. The seasonal frozen depth is 1 0~2 0 m. Permafrost has formed above 4150~4200 m a.s.l....

Field investigation shows no permafrost in the interior of the Zoige Plateau. The mean annual air temperature is 0.6~3.3℃, and the annual range of air temperature is 19.1~21 2℃ . It is not cold enough to form permafrost. According to the temperature measurement from pits and boreholes (in July 1992), the ground temperature is 5 0~8 4℃ in the depth of 1 0~2 2 m, and shallow ground water temperature is 6 0~7 8℃. The seasonal frozen depth is 1 0~2 0 m. Permafrost has formed above 4150~4200 m a.s.l. in the mountainous around the plateau according to a permafrost investigation and pit prospecting. The swamp evolution reveals that a part of swamp has been drained and another part will be drained. The degeneration and desertification of grass lands becomes an important problem to ecological environment, impacts livestock.

若尔盖高原内部年平均气温0.6~3.3℃,气温年较差19.1~21.2℃,已不具备多年冻土形成和保存的气候条件。据1992年7月间试坑和钻孔测温,在1.0~2.2m深处地温为5~8.4℃,浅层地下水温6.0~7.8℃,由此判断不存在多年冻土,季节冻结深度为1.0~2.0m。据冻土现象和试坑资料判断,周围山地海拔4150~4200m以上发育山地岛状多年冻土。区内沼泽演化表明,部分沼泽已疏干或向疏干趋势发展,草场退化和草原沙化已成为本区生态环境的重要问题,并已影响畜牧业发展

In this paper a model of thermal stability is put forward, which is expressed by ratio \%Q\%\-t/ \%Q\%\-+, where \%Q\%\-t is the total heat of thawing sediment from the bottom of seasonal thawing layer to the potential seasonal freezing depth and the heat spent in temperature rising to 0 ℃ of the bottom seasonal freezing layer, and \%Q\%\-+ is the absorbed heat in the warm season. Based on the monitor data of frozen soil along the Qinghai-Tibetan Highway, the thermal stability model...

In this paper a model of thermal stability is put forward, which is expressed by ratio \%Q\%\-t/ \%Q\%\-+, where \%Q\%\-t is the total heat of thawing sediment from the bottom of seasonal thawing layer to the potential seasonal freezing depth and the heat spent in temperature rising to 0 ℃ of the bottom seasonal freezing layer, and \%Q\%\-+ is the absorbed heat in the warm season. Based on the monitor data of frozen soil along the Qinghai-Tibetan Highway, the thermal stability model is used to analyze the relationships among thermal stability, mean annual ground temperature, permafrost table temperature and seasonal thawing depth. \ \ Analysis results show that thermal stability can well reflect the change of frozen soil under natural state and human activity. Thermal stability has a close relationship with mean annual ground temperature, temperature at the bottom of seasonal thawing layer, and seasonal thawing depth. Permafrost thermal stability linearly changes with permafrost table temperature and mean annual ground temperature Thermal stability increases with mean annual ground temperature decreasing. The higher the MAGT is, the smaller the ratio \%Q\%\-t/ \%Q\%\-+ is. Permafrost is easy changing with environmental factors. The relationship between permafrost thermal stability and seasonally thawing depth is an exponential one. When permafrost thermal stability is stronger, the absorbed heat in warm season can only result in slight thawing in the sediments from the bottom of the active layer to the potential seasonally freezing depth, and is unable to raise the temperature at the bottom of the active layer to 0 ℃. With permafrost thermal stability weakening, the absorbed heat in warm season can result in greatly thawing in the sediments from the bottom of the active layer and the potential seasonally freezing depth, and is able to raise the temperature at the bottom of the active layer to 0 ℃. \ \ According to the classification of permafrost stability, permafrost table change and thermal regime along the Qinghai-Tibetan Highway, permafrost can be divided into four types: thermal stable permafrost, transitional thermal stable permafrost, thermal unstable permafrost and extreme thermal unstable permafrost. Thermal stability reflects the change of comprehensive factors of frozen soil and sensitively responds to the change of environmental factors under human activities.

提出了用季节融化层底板到潜在季节冻结深度区间沉积物融化所需要的热量与季节冻结层底板温度升高至 0℃所需要的热量之和 (Qt) ,与夏半年土体吸收的热量 (Q+ )的比值来描述冻土热稳定性 (ST=Qt/Q+ ) .根据青藏公路沿线地温温度场的监测资料 ,对多年冻土热稳定性模型进行了计算 ,并分析了多年冻土热稳定性与年平均地温、多年冻土顶板温度和季节融化深度间的关系 .根据人类工程活动对多年冻土影响 ,将多年冻土热稳定性分为 4类 :热稳定型、热稳定过渡型、热不稳定型和热极不稳定型多年冻土

 
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关seasonal frozen depth的内容
在知识搜索中查有关seasonal frozen depth的内容
在数字搜索中查有关seasonal frozen depth的内容
在概念知识元中查有关seasonal frozen depth的内容
在学术趋势中查有关seasonal frozen depth的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社