1) active layer
活动层
1.
Accordingly,an active layer close to the supporting system of tunnel is formed in the surrounding rock under seasonal thawing and freezing.
高原多年冻土区隧道的修建,将不可避免地影响到隧道背后多年冻结围岩的热稳定性,并形成季节融化与冻结的活动层。
2.
An asymptotic expansion,which satisfies all the boundary conditions including at upper boundary with time-dependent and phase-change ridge,of temperature in permafrost active layer is formulated.
对微分形式的热传导方程进行积分变换,将其转变成等价的积分形式的热传导方程式,然后应用渐近序列方法于非定常边界条件下存在相变的多年冻土活动层的温度计算中,提出新的多年冻土活动层温度解析近似计算公式。
3.
By monitoring the heat and water process of the active layers for some sites(included sand-gravel site,removed vegetation site and meadow site beneath the original surface and the effect of engineering activity near Beiluhe,Tibetan Plateau,the effect of engineering activity on the characteristics of heat and water transfer and of freezing and thawing are compartively analyzed.
通过对青藏高原北麓河附近天然状态和工程活动状态下不同场地(砂砾路面、铲除植被、草甸地表)的活动层水热状态监测研究,对比分析了不同工程活动对场地活动层的水热传输特征和冻融过程的影响。
2) fault movement
断层活动
1.
For studying the coorelation between the crustal deformation and fault movement caused by the reservoir impoundment the tilt data of two fixed deformation stations(Zhouping and Yichang) are analysed and processed with wavelet transformation method.
为研究三峡水库蓄水所引起的库区地壳形变和断层活动,运用小波变换分析和处理了大坝附近两个定点形变台(周坪台和宜昌台)的倾斜观测数据,发现蓄水后库区仙女山断裂带的活动发生了一些变化,库区周围的倾斜场发生微动态变化,库区下游区域的倾斜场没有发生明显的变化。
2.
As regards the fault movement,in the west,the faults are predominantly normal and in the east the thrust faults are the most.
华北地区 (特别是西部 )的断层活动主要具有正断性质 ,但华北东部的逆断活动比例高于西部。
3.
The deformation fields raised by fault movement and a general inverse algorithm are discussed.
讨论了断层活动引起的变形场及一般性反演方法。
3) fault activity
断层活动
1.
This paper presents the quantitative analysis of fault activity intensity and regularity of Guantao formation and the systematic study of its effect on controlling the hydrocarbon accumulation.
在定量分析济阳坳陷馆陶组断层活动强度和总结断层活动规律的前提下,系统研究了该时期断层活动对油气成藏的控制。
2.
The available geological and geophysical methods fail to estimate variations of fault activity in real time intervals, such as months, years or decades.
已有的地质和地球物理方法无法对年、月、旬等现今时间尺度上的断层活动变化进行有效预测。
3.
The component,arrangement and technical indexes of the field continuous monitoring system for fault activity are intruduced.
介绍野外型断层活动连续监测系统的组成、布设及主要技术指标。
4) active fault
活动断层
1.
The application of RS in the research of active fault;
遥感技术在活动断层研究中的应用
2.
Microscopic observation method for active faults in soft sediments.;
松散沉积物中活动断层的微观探测方法
3.
Microstructural and microsedimentologic observations of active faults in loess area.;
黄土地区活动断层的显微构造和显微沉积学探测
5) Ground variation
岩层活动
6) active faults
活动断层
1.
Tectonic earthquakes are closely related to active faults.
地震发生在活动断层上,而断层活动不一定都发震,为进行地震危险性分析,确定未来可能发生地震的地段和强度。
2.
However,active faults are usually developed in soft sediments,and sometimes do not leave any macroscopically observable trace.
目前中国正在广泛开展城市活动断层的探测。
3.
By the use of the previous information of M\-L 612 earthquake in the west of Beijing in 1730 together with the data of drills,electromagnetism and gravity,the Qinglongqiao\|Qiliqu and Shahe active faults are identified for the first time.
在前人研究1730年北京西郊612级地震的基础上,综合井孔、电磁和重力资料,经分析初步确定了青龙桥—七里渠活动断层和沙河断陷南缘活动断层的存在及其位置、规模和基本特征,认为这两条活动断层是此次地震的发震构造,其中青龙桥—七里渠断层在此次地震中起主导作用。
补充资料:活动层
活动层
active layer
huodongeeng活动层(aetive layer)能够完全吸收净辐射的物质层。在作物层中,辐射的吸收和放射、水分的蒸发和凝结等的热转换过程,不只发生在一个面上,而常发生在一定厚度的物质层中,这就是活动层,又称作用层。不同物质的活动层,对长波辐射和短波辐射的吸收各不相同,活动层厚度也不一样。例如,就短波辐射而言,在砂性土壤中,活动层厚达几毫米,在水中可达几米甚至几十米;就长波辐射而论,在雪被和水域上,活动层厚仅几分之一毫米;在疏松的耕地上,可增至几厘米。在农田中,不论短波或长波辐射,作物层就是农田活动层。 活动层的厚度和性质,决定于活动面的种类、状态以及到达活动面的辐射性质。活动面状况不同,活动层性质也不同,下垫面辐射性质也随之而异,形成不同的辐射状况,产生不同的小气候特点。 (江广恒)
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参考词条