冻土层

“我们认为这些甲烷没有泄露的原因是海边的永久冻土层象盖子一样把这些气体封在原处”，Semiletov说。

" It was assumed that these stores of methane have not been leaking , because the sub-sea permafrost served as a lid keeping hydrates and natural gas in place ," Semiletov said .

确定大兴安岭地区多年冻土层上限的工程勘察方法

A Investigation Method of Determining Permafrost Table in the Greater Xing ′ an Mountains

冻土层温度上升0.5～1℃，厚度减小了10～20m；

The temperature of frozen earth storey had rised 0.5-1 ℃, its thickness thined 10-20 m ;

当输入高频Elcentro波时，在中、低频段，含冻土层路基的地震加速度反应谱较不含冻土层路基的地震加速度反应谱大；

In the mid and low frequency stage , the values of earthquake acceleration response spectrum for roadbed with frozen soil are larger than that without frozen soil when input is El Centro wave .

冻土层完全融通时，地表蒸发逐渐增强，表层0～10cmc处的土壤变得既干又硬。

When complete facilities permafrost , surface evaporation gradually strong at the surface 0 ~ 10cmc soil becomes very dry hard .

季节冻土层对房屋地震破坏的影响

Influence of Seasonally Frozen Ground on the Seismic Damages of Buildings

冻土层对多层砖房动力特性的影响

Effects of frozen soils on response of multistory brick buildings

冻土层对桥梁地震反应的影响

Effect of frozen soil layer on seismic response of bridges

冻土层下球状药包爆破方法

A blasting method with spherical charges beneath frozen ground

考虑了冻土层和无限边界的影响。

The influence of frozen earth layers is analyzed .

视电阻率法测井在划分多年冻土层的应用效果

Effect of Identifying Permafrost by Apparent Resistivity Logging

保温层等效冻土层系数取值方法的探讨

Discussion on Valuation Method of Equivalent Coefficient of Frozen Soil Layer of Thermo Insulating Layer

现在这些冻土层正在融化。

And the permafrost is thawing .

值得注意的是，温室效应使得北冰洋周围的冻土层受热，

This is a problem because the warming heats up the frozen ground around the Arctic Ocean ,

季节冻土层影响下冻土墙温度场模型试验研究

Experimental Study of the Temperature Field in a Frozen Wall Influenced by a Seasonal Frozen Soil Layer

在冻土层越厚·冻土层及冻土层之下沉积层的地温梯度越小的地区，最有利于水合物发育。

Gas hydrate is propitious to occur where frozen layer is thicker and thermal gradient is lower .

无季节冻土层的人工冻结耗能远远高于有季节冻土层时人工冻结耗能。

The energy consumption of artificial freezing without seasonally frozen ground outclass that with seasonally frozen ground .

冻土层的变化与地气交接面的能量交换过程有直接的联系。

Variations of frozen soil layer have direct relation with the energy exchange between the ground and atmosphere .

提出了关于冬季强夯加固处理冻土层的理论依据。

The theoretical basis for reinforcing of dynamic compaction in winter and treating the frozen soil layer is presented .

而它们的根也不会长得很深，这样永久冻土层便不会阻碍其生长。

And their roots don 't grow very deep , so the permafrost doesn 't interfere with their growth .

等效冻土层系数是反映保温层消减冻土层厚度的一个重要参数。

Equivalent coefficient of frozen soil layer is an essential parameter showing ablation of frozen soil layer by thermo insulating layer .

进一步假定不同的冻土层厚度，计算得到地震动峰值参数和反应谱随冻层厚度变化的规律，以此分析了冻土层对地震动效应的影响。

Furthermore , different depths of the frozen layer are assumed and peak ground motion parameters and response spectra are calculated .

冻土层等效导热系数λ是保温防冻设计中保温层厚度计算的重要参数。

Equivalent coefficient of heat conductivity , is an essential parameter to calculate thickness of thermo insulating layer in the design .

介绍了季节性冻土层下球状药包爆破方法以及爆破漏斗的形状。

This paper presents a blasting method with spherical charges beneath a seasonal frozen ground and the shape of blasting crater .

讨论了具有季节冻土层的场地上地震动反应分析的输入问题，包括边界条件、地震动时程和土层参数。

The input for the ground motion analysis , such as boundary conditions , seismic records and soil parameters are discussed .

冻土层的存在，对桥梁结构抗震安全性的影响是一个值得重视的问题。

It is worth attaching importance to the problem that the frozen earth layer has influence upon the aseismatic safety of bridges .

大部分品种的企鹅在露天地上筑巢，将卵产在浅滩凹陷处，埋入冻土层中。

Most species make their nests on bare ground , and lay their eggs in shallow hollows scraped in the icy dirt .

通过人工模拟实验证实，幼虫以休眠状态在冻土层越冬，身体皱缩、发黄。

Artificial simulated experiment confirmed that larvae overwintered in a dormant state with its body shrinked , and its body became yellow .

冻结滞水指因冬季的冻结作用在包气带冻土层内形成的季节性固态地下水。

The frozen perched groundwater is the seasonal soild state groundwater formed in the aeration frozen layer as a result of winter freezing .

根据爆破漏斗试验结果并从冻土层受力破碎特点出发，对冻土层的破碎机理进行了定性分析。

The mechanism of frozen ground fragmentation is qualitatively studied based on the results of crater tests and from the characteristics of frozen ground fragmentation .