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impending
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    Statistical Analysis for the Total Characteristics of the Impending Earthquake Burst Anomaly of the Nine Strong Earthquakes in China
    中国11次大地震震突发性异常总体特征的统计分析
短句来源
    ANALYSIS FOR SHORT IMPENDING ANOMADY OF CHAO YANG EARTHQUAKE WITH M_L4.2
    朝阳4.2级地震短异常分析
短句来源
    IMPENDING EARTHQUAKE PREDICTION BY BOREHOLE STRAIN ANOMALIES FOR BACHU M 4. 2 EARTHQUAKE
    巴楚北4.2级地震震预报及钻孔应变异常分析
短句来源
    The Precursory Information of Impending Earthquake Learnt from the Strong Earthquakes of the Past Few Years in Japan
    近几年日本强地震的震前兆信息
短句来源
    THE SHORT-TERM AND IMPENDING EARTHQUAKE PREDICTION FOR GONGHE EARTHQUAKE WITH M_S5.8 ON FEB.16,1994.
    1994年2月16日共和5.8级地震短预报实况
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  临震
    Statistical Analysis for the Total Characteristics of the Impending Earthquake Burst Anomaly of the Nine Strong Earthquakes in China
    中国11次大地震临震突发性异常总体特征的统计分析
短句来源
    IMPENDING EARTHQUAKE PREDICTION BY BOREHOLE STRAIN ANOMALIES FOR BACHU M 4. 2 EARTHQUAKE
    巴楚北4.2级地震临震预报及钻孔应变异常分析
短句来源
    The Precursory Information of Impending Earthquake Learnt from the Strong Earthquakes of the Past Few Years in Japan
    近几年日本强地震的临震前兆信息
短句来源
    Character of the dip pulsation cluster and impending earthquake prediction
    倾斜脉动特征与临震预报
短句来源
    Underground Stress Method in Impending Earthquake Prediction
    地震临震预测预报的地应力方法
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  “impending”译为未确定词的双语例句
    Preliminary inquiry into the causes of anomaly increase of air temperature by an impending earthquake
    Preliminary inquiry into the causes of anomaly increase of air temperature by an impending earthquake
短句来源
    COMPREHENSIVE MARK OF SHORT-TERM AND IMPENDING ANOMALY IN NORTH CHINA AND STUDY ON PREDICTION INDEX
    华北地区地震短临异常综合标志及预报指标的研究
短句来源
    STUDY ON THE DECISION METHOD OF SHORT-TERM AND IMPENDING PRECURSORY ANOMALY OF EARTH RESISTIVITY
    地电阻率短临前兆异常的判定方法研究
短句来源
    STUDY ON THE DYNAMIC TRACING FOR IMPENDING EARTHQUAKE IN XINJIANG'S SEISMIC RISK ZONING
    新疆地震危险区短临跟踪预报研究
短句来源
    ANALYSIS ON SHORT-TERM AND IMPENDING PRECURSORS OF NO.19 HORIZONTAL FAULT METER IN XINJIANG
    新疆19号水平断层仪短临前兆异常分析
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  impending
Some circumstances impending analysis of these data are discussed.
      
Gradients and phase velocities of ULF geomagnetic disturbances used to determine the source of an impending strong earthquake
      
Directions from sources of impending earthquakes appear in the distribution of phase velocity vector directions.
      
Suggestion of EFS-small satellite system for impending earthquake forecast
      
The main purpose of the system is the impending forecast of earthquakes.
      
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In this paper the complexity of the short-term and impending earthquake precursors is studied with the anisotropic and quasi-elastic medium model and the source-composite model by using the finite-element numerical simulation. The result shows that the exhibitory degree depends on the closed degree of the observational site to the seismogenic structure. The closer the distance between the observational site and seismogenic structure, the more obvious the anomaly is. For the temporal distribution, the anomaly...

In this paper the complexity of the short-term and impending earthquake precursors is studied with the anisotropic and quasi-elastic medium model and the source-composite model by using the finite-element numerical simulation. The result shows that the exhibitory degree depends on the closed degree of the observational site to the seismogenic structure. The closer the distance between the observational site and seismogenic structure, the more obvious the anomaly is. For the temporal distribution, the anomaly initially indicated the feature of anomaly propagation from the out-ring to the epicenter. In addition, the observations of the multiple techniques (multiple physical quantities) at same site often show obvious difference of the anomaly exhibition due to that the multiple physical quantities depend on the different variable factors during the seismogenic process.

本文选用各向异性的准弹性介质模型和震源组合模型,应用有限元数值模拟方法,研究了短临阶段地震前兆的复杂性。给出:临震异常的显现程度取决于观测点距发震构造的贴近程度。观测点越接近发震构造,异常越明显。在时间分布上,异常先在外围出现后在震中区出现,呈现为异常从外围向震中传播的特征。此外,对于在同一观测点上的多手段(多种物理量)观测,由于不同物理量各自依赖于孕震过程中不同的变化因子,因此,同一观测点上的不同物理量监测,其异常显示的情况往往也有明显的差异。

The variations of dynamic characteristics, mainly the form and spectrum pf seismic waves before large earthquakes have been studied, and some prediction indices among which, some may be prospective in application to short-term(within half year) earthquake prediction, are found. These indices include: temporal and spatial linearity of wave form of initial part of S,P wave, its average half-period, the peak frequency, corner frequency, relative width of frequency domain, relative value of peak spectrum and the...

The variations of dynamic characteristics, mainly the form and spectrum pf seismic waves before large earthquakes have been studied, and some prediction indices among which, some may be prospective in application to short-term(within half year) earthquake prediction, are found. These indices include: temporal and spatial linearity of wave form of initial part of S,P wave, its average half-period, the peak frequency, corner frequency, relative width of frequency domain, relative value of peak spectrum and the absolute slope value of high frequencies.At same time, it also analysed short-term(half year) and impending(9 days) precursory variations of linearity and spectral characeristics of short-term microseism waveform. And found precursory variations of linearity and spectral characteristics,average half-period,peak frequency,maximum frequency, corner frequency is obvious. Therefore, they may be considered as the indices for short-term and impending earthquake prediction.All the prediction indices of dynamic characteristics variation of seismic waves given in this paper are checked through Gonghe MS6.9 earthquake on April 26, 1990; Datong As6.1 earthquake on Oct. 19, 1989; Changshu MS5.1 earthquake on Feb 9, 1990 and some moderate earthquakes with MS4.5 occurred in recent years in Tangshan region,and partly through the Haicheng earthquake AS7.3 in 1975 and Tangshan earthquake MS7.8 in 1976.

本文研究大地震前地震波动力学特征的变化,主要是波形和频谱的变化,并从中提取出可望在短期(半年以内)地震预报中应用的一些预报指标。这些指标包括:P波初始部分波形的时间线性度和空间线性度,初始段平均半周期,S、P波频谱的峰值频率、拐角频率、相对频带宽度、相对频谱峰值、高频段的谱线斜率绝对值等。同时还研究了短周期地脉动的波形线性度及频谱特征量(峰值频率等)在大震前出现的短期(半年以内)和临震(9天以内)的前兆异常变化,发现其波形时间线性度与空间线性度、平均半周期及频谱的最大频率、峰值频率、拐角频率等的前兆异常变化明显,因而可作为短临地震预报指标。 本文所提出的地震波动力学特征变化指标已经过1990年青海共和6.9级地震、1989年10月山西大同6.1级地震、1990年常熟5.1级地震、近年来唐山老震区的几次4.5级左右地震以及1975年海城7.3级地震和(1976年唐山7.8级地震的震例分析检验。

In this paper the features of comprehensive variation of the short-term and impending anomlies are induced based on analysis of various short-term and impending anomlies befor 16 moderate strong esrthquakes in North China. The authors proposed two quantitative comprehensive marks of seismogenic process transited from the medium-term to the short-term on basis of the comprehensive feature of the short-term and impending anomlies; at same time authors studied that if it can issue comprehensive...

In this paper the features of comprehensive variation of the short-term and impending anomlies are induced based on analysis of various short-term and impending anomlies befor 16 moderate strong esrthquakes in North China. The authors proposed two quantitative comprehensive marks of seismogenic process transited from the medium-term to the short-term on basis of the comprehensive feature of the short-term and impending anomlies; at same time authors studied that if it can issue comprehensive prediction indices of M>5.0 earthquakes based on quite a few observed short -term and impending anomalies.Finally,the authors examined the comprehensive marks and indices before 8 earthquakes. The result has practical significance in the short-term and impending prediction.

本文对华北16次中强以上地震前多种前兆短临异常进行了分析,归纳出短临异常的综合变化特征。依据短临异常的综合特征,提出在中期异常背景上孕震过程由中期向短期过渡的两个定量化综合标志。研究了孕震后期在观测到较多数量短临异常情况下,能否发布5级以上地震预报意见的预报指标。作为本文结果的检验,计算了8次地震前的综合标志和预报指标。本研究工作在短临预报中具有一定的实用价值。

 
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