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变化幅度
相关语句
  variation amplitude
    Taking the vertical component as example, this paper analysis the irregularity of rhe daily variation, the amplitude of the daily variations, the values taken at O o'clock and 12 o'clock and the menthly mean values, and proposes the standard deviation of the two statiohs and the relationship between the variation amplitude and distance.
    本文以垂直分量为例,分析了日变、日变幅、0点值、12点值和月均值的不规律性,给出两台差值的标准偏差和变化幅度与距离的关系。
短句来源
    For example, when the distance between two stations is 600 km, the standard deviation of daily range difference should be 4r and the variation amplitude of the daily range should be more than 10r. This might cause false seismo-magnetic anomalies to the mobile goemagnetic measurement.
    例如,两台相距600公里时,日变差值的标准偏差为4γ,日变差值一天内的变化幅度10γ以上,这可能给流动磁测造成假的震磁异常。
短句来源
    The standard deviation and the variation amplitude at O o'clock are small, whereas the same parameters are much bigger for thr daily variation amplitude, the 12 o'clock values and monthly mean values. All of them might cause false seismo-geomagnetic anomalies.
    0点值差值的标准偏差和变化幅度稍小,日变幅、12点值和月均值的这些参数较大,它们都可能形成假的震磁异常。
短句来源
    The oblique baseline data show obvious drop started in the first half year of 1974 and opposite change in late 1975. The variation amplitude of Q angzilu baseline data before the earthquake was about 2-3×10-5. There were a slow rise for about three years before the earthquake and a relatively steady trend of Xiaoshuiyi baseline data after the earthquake.
    斜交基线测量资料则在1974年上半年出现明显下降变化,而在1975年底出现反向变化。 墙子路基线测量资料在震前的变化幅度约为(2~3)×10~(-5)。
短句来源
    The variation amplitude of Xiaoshuiyi data before the earthquake is about 1-2×10-5. After the data processing the anomalous changes of Qiangzilu and Xiaoshuiyi baseline there existed obviously horizontal movement along related fault before the Tangshan earthquake.
    变化幅度约为(1~2)×10~(-5)。 经过处理后的基线测量资料表明,断层在唐山地震前存在明显的水平方向运动。
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  “变化幅度”译为未确定词的双语例句
    The element content in the fine-grainedfraction ( <0.063mm) of the core is great. The correlation coefficient between the elements in the coarse-grained is high, which indicate that the coarse-grained sediments derived from the same provenance.
    柱样中细粒级(<0.063mm)元素含量较粗粒级(>0.063mm)高,变化幅度大,从元素之间相关性来看,粗粒级的元素之间相关系数高,表明粗粒级物质具有统一来源。
短句来源
    For example, the variable amplitudes of waterradon are 15%, 13.5% and 7.5% in thh ZK12 well with the different press sur;
    氧气随压力的增加而变化,如ZK12钻孔水氡变化幅度分别为15%、13.5%、7.5%;
短句来源
    The mean value of sandstone and mudstone from SE China appears to be 3. 41 ±1. 22W/m. K and 3. 59±1. 19w/m. K respectively and it varies in a wide range.
    砂岩和泥岩的平均热导率值分别为3.41±1.22W/m.K和3.59±1.19w/m.K,而且在区域上同类岩石的热导率值变化幅度很大。
短句来源
    The thickness of low-velocity layer in upper-mantal underneath NE China and the belt of transition from Asia to Pacific vary in the rangeof 0-100km and the thickness of the crust in the area is about 30-44km with the changingrange of 14km.
    在中国东北及亚太过渡带上地幔低速层厚度在0~100km之间变化,计算数据表明,本区地壳厚度为30~44km,变化幅度为14km。
短句来源
    The evident changing rate occures when the pH is equal to 2, the average of α1-2 increases 147.6 percent, the average of c,decreases 57. 1% and 34.8% respectively.
    pH=2.0时,变化幅度显著增大,其中α1-2平均增大了147.6%,c与的平均值分别降低57.1%和34.8%.
短句来源
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  variation amplitude
The character of the air bubble oscillations in water is investigated in relation to the initial bubble radius and the fluid pressure variation amplitude.
      
The position of the maximums of these belts (Lmax = 2.9 and 3.1) coincides with the known dependence of Lmax on the magnetic storm Dst variation amplitude: |Dst|max = 2.75 × 104/Lmax4.
      
WPIO's maximum volume variation amplitude is 66% larger over the annual mean value.
      
However, two calculated dδ18O/dT curves display the distinct difference: the variation amplitude of slope series II is larger than that of slope series I.
      
Daily rainfall data obtained from ECMWF reanalysis are obviously better than those from NCEP reanalysis in terms of long period daily mean, local correlation, variation amplitude, fluctuation pattern and frequency.
      
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A new quantity -maximum correlation time-is introduced to describe thephase relation between the daily variations of the vertical component of geomagnetic field at two stations. The maximum correlation time is computed by using adequate data processing technique from the hourly readings of vertical component at the Peking and Wuhan stations. The mean value of the maximum correlation time is shown to be nearly equal to the difference of local times for these stations. Moreover, it exhibits remarkable seasonal...

A new quantity -maximum correlation time-is introduced to describe thephase relation between the daily variations of the vertical component of geomagnetic field at two stations. The maximum correlation time is computed by using adequate data processing technique from the hourly readings of vertical component at the Peking and Wuhan stations. The mean value of the maximum correlation time is shown to be nearly equal to the difference of local times for these stations. Moreover, it exhibits remarkable seasonal variation which has a period of one year and ranges to about 0.7 hour. Fourier analysis of the maximum correlation time shows that it also conta-ins two appreciable harmonics with periods 29.8 ± 0.6 and 13.7 ± 0.2 days respectively,, and with amplitudes of about 0.06 hour for both harmonics.

本文用最大相关时间描写两台地磁场垂直分量日变形态的位相关系。通过恰当的数据处理方式,从两台(北京台和武汉台)地磁垂直分量的整点值计算出最大相关时间。它的平均值等于两台的地方时差。此外最大相关时间还有明显的以年为周期的季节性变化,变化幅度约为0.7小时。对最大相关时间作了傅氏分析,结果表明它含有周期为29.8±0.6天和13.7±0.2天,振幅约为0.06小时的周期变化。

Such features as higher stability, quick operation, and convenient maintenance of the proton precession magnetometer in the use of geomagnetic total field measurement make it very suitable to be installed in dense network of geomagnetic observatories or survey sites for monitoring the seismo-magnetic phenomena. But some people propose that it is necessary to measure the geomagnetic component, especially the vertical, to monitor the seismo-magnetic phenomena.In this paper the effectiveness of the total field...

Such features as higher stability, quick operation, and convenient maintenance of the proton precession magnetometer in the use of geomagnetic total field measurement make it very suitable to be installed in dense network of geomagnetic observatories or survey sites for monitoring the seismo-magnetic phenomena. But some people propose that it is necessary to measure the geomagnetic component, especially the vertical, to monitor the seismo-magnetic phenomena.In this paper the effectiveness of the total field measurement in monitoring the seismo-magnetic phenomena is proved on the basis of the formula separating local anomaly origin into external and internal parts. It is shown that the range of anomaly of the total field, △F, can not be zero anywhere in the entire anomalous region and that it is comparable with the range of the component anomalies, △H or △Z. This makes it possible to monitor in seismic region the whole process of the seismo-magnetic phenomena, specially and temporally with a set of dense observatories or survey sites using PPM.

质子旋进磁强计(PPM)作为地磁场总强度标量测量的仪器,具有稳定、操作简便、测量迅速等优点.其性能很适于地震磁现象的观测.可是,总强度在震磁现象观测中是否有效,中外从事此项研究工作的学者看法不一.本文以区分局部地磁异常的源场公式为基础,论证了在地表地震磁异常的全域内,总强度的变化不能为零,其变化幅度,ΔF 与垂直分量的变化幅度ΔZ应大体相当,这与实际震例和地震磁效应模型计算结果相吻合.这就使我们有可能充分利用PPM 作为总强度标量测量仪器的优越性,在重点地区布署以总强度测量为主的台站和流动测网,以尽力捕捉地震磁现象时空变化的全过程.

We used the method of ground resistivity measurement to show the variation with time of the earth's electrical resistivity near the surface as the precursor of an earthquake. It has been found that the variation of the resistivity is really very complicated even under conditions of no earthquake and assured accuracy of measurement, thus making the quantitative or even qualitative analysis of the resistivity variation rather difficult.In this paper, the data of variations of earth resistivity observed at a number...

We used the method of ground resistivity measurement to show the variation with time of the earth's electrical resistivity near the surface as the precursor of an earthquake. It has been found that the variation of the resistivity is really very complicated even under conditions of no earthquake and assured accuracy of measurement, thus making the quantitative or even qualitative analysis of the resistivity variation rather difficult.In this paper, the data of variations of earth resistivity observed at a number of stations were analysized for empirical regularities, and on the basis of which a "model of profile section of varying resistivity" was proposed to describe the complex nature and the possible cause of the variation of resistivity in case no earthquake is to occur. From this model section, a formula is obtained for calculating the amplitude of relative apparent annual variation of resistivity at a station characterized by two resistivity layers. Through computations, it is found that, the use of stationary variations of resistivity data might be a possible way to resolve the above difficulty and a concrete method of its application is given.

观测地壳浅层电阻率随时间变化以寻找地震信息是地电阻率方法的目的。实际工作中,在保证观测精度的前提下,发现正常(无震)情况的地电阻率仍然存在着复杂的变化,给定量和定性分析地震异常带来相当大的困难。 本文分析了一些台站正常地电阻率的变化规律,并在此基础上提出“变化电性剖面模式”,来阐明一些台站正常地电阻率变化的复杂过程及其产生的可能原因。从此观点出发,导出以二层电性剖面为特征的台站正常地电阻率相对似年变化幅度公式。通过典型计算,提出获取平稳的正常原始资料是解决上述困难问题的方向,并指出了获取平稳正常变化资料的具体途径。

 
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