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前兆异常时间
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  precursor time
     ON NONLINEAR CHARACTERISTICS OF EARTHQUAKE PRECURSOR TIME WITH REFERENCE TO HAICHENG AND TANGSHAN EARTHQUAKES
     地震前兆异常时间分布非线性特征的初步探讨——以海城地震和唐山地震为例
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  “前兆异常时间”译为未确定词的双语例句
     COMPARATIVE ANALYSIS ON TIME PROGRESS AND SPATIAL DISTRIBUTION CHARACTERISTIC FOR PRECURSOR ANOMALY OF DEFORMATION BEFORE SOME STRONG EARTHQUAKES
     几次强震形变前兆异常时间进程和空间分布特征的对比观测研究
短句来源
     The anomalous time of underground water precursors in the focal area which was ohrained by using the equations developed by whitcomb and Nut similar to above mentioned abnormal time.
     对震源区的地下水前兆异常时间用怀特卡姆,奴尔理论公式计算.
短句来源
     The characteristics of anomaly for earthquake group mainly are: (1) the temporal span of anomaly is large, and the anomaly, which behaves tendency anomaly, generally run through the whole earthquake group;
     成组地震的异常特征主要表现为:(1)成组地震前兆异常时间跨度大,一般贯穿整个地震组始终,表现为长期的趋势异常。
短句来源
     It is meaningful that these theoretical results have been applied to explain preliminarily the characteristics of stage variation of spatial temporal evolution, the pattern and quadrant distribution of earthquake precursors, the changeability, spontaneity and complexity of short term and imminent term precursors.
     这些结果对地震前兆的形态特征、前兆的象限性、前兆时空演化的阶段性、短临前兆突发性以及前兆异常时间的地区性等的解释具有启示意义 .
短句来源
     (3) The theoretical results have been applied to explain tentatively follow questions; the stage variety of the spatial temporal evolution, shape and quadrant distribution characteristics of earthquake precursors, spontaneity, variety and relativity with external agencies of immediate precursors and so on.
     ③将理论结果对地震前兆的形态特征、前兆的象限性、前兆时空演化的阶段性、短临前兆突发性、多变性以及与外因相关性、前兆异常时间的地区性等进行了初步解释,这为地震前兆物理模式的建立提供了理论基础,并将在实现地震的物理预报方面发挥显著作用。
  相似匹配句对
     THE DETERMINATION OF BEGINNING TIME OF PRECURSORY ANOMALIES FOR FIXED POINT DEFORMATION
     定点形变前兆异常起始时间的判别
短句来源
     precursor anomalies had seldom recurrence;
     前兆异常缺乏重现性;
短句来源
     STUDY ON THE DISCRIMINATION OF EARTHQUAKE PRECURSOR ANOMALY BY POWER SPECTRUM TIME FUNCTION
     用功率谱时间函数识别地震前兆异常
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     Time
     时间
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     Time is...
     时间
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  precursor time
In this case the uplifted area had a radius of approximately 200 km, and the precursor time may have been about 30 years.
      
It is demonstrated that the precursor time interval (τ) vs.M relation approximately fits in that for the τ vs.
      
The precursor time observed 9±1.5 years is in fairly good agreement with current magnitude-precursor time relations.
      
Empirical relations are given between earthquake magnitude and the epicentral distance of the farthest groundwater anomaly, and between earthquake magnitude and the precursor time of groundwater.
      
It is obviously impossible to demonstrate in this study whether or not there is any relation between precursor time and earthquake magnitude.
      
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Based upon the statistical analysis of the groundwater anomaly before Haircheng earthquake with magnitude 7.3. it can be found that the abnormal time before the earthquake have a varied tendency as arithmetic series progressively of decrease. The anomalous time of underground water precursors in the focal area which was ohrained by using the equations developed by whitcomb and Nut similar to above mentioned abnormal time. Thus it can suggest that the anomaly time of earthpuake precursors controlled bythe identical...

Based upon the statistical analysis of the groundwater anomaly before Haircheng earthquake with magnitude 7.3. it can be found that the abnormal time before the earthquake have a varied tendency as arithmetic series progressively of decrease. The anomalous time of underground water precursors in the focal area which was ohrained by using the equations developed by whitcomb and Nut similar to above mentioned abnormal time. Thus it can suggest that the anomaly time of earthpuake precursors controlled bythe identical focus in the focal area and its surrounding region are consistent what their gener regardless of nature and process of precursors. This idea will provide a basisfor studing the quantitative marker oral of anomaly time bafore an earthquake in future.

通过海城7.3级地震前地下水异常资料的统计分析,发现震前异常时问有呈递减等差级数的变化趋势.对震源区的地下水前兆异常时间用怀特卡姆,奴尔理论公式计算.求得异常时间与前者相仿,因此可认为受同一震源体控制的地震前兆,不管生成过程怎样.其震源区与外围区前兆在时间上有统一性,这一认识为今后研究地震前地下水异常定量指标—异常时间(T)提供理论根据

The direct method of fuzzy pattern recognition has been applied to the synthetic recognition of medium-short-term (several months) earthquake precursors of different kinds observed at different stations.The basic technique of this method is to construct a suitable membership function for each single precursor at each single station and then the comprehensive membership function for several precursors of different kinds or for the same precursor observed at different stations.By using this method,the precursors...

The direct method of fuzzy pattern recognition has been applied to the synthetic recognition of medium-short-term (several months) earthquake precursors of different kinds observed at different stations.The basic technique of this method is to construct a suitable membership function for each single precursor at each single station and then the comprehensive membership function for several precursors of different kinds or for the same precursor observed at different stations.By using this method,the precursors observed in the Tokai area and its vicinity of Japan are studied with emphasis. They are the radon content in ground water,groundwater level,tilt,tide and volume strain. The abundant observational data from 3 tilt stations,2 tide stations,2 stations for observation of radon content in ground water,2 stations for observation of water level and 30 stations for observation of volume strain are used. Two possible precursor patterns for medium-short-term earthquake prediction in the Tokai area were proposed. One is applied to the synthetic analysis of several precursors of different kinds and at different stations,the other is applied to the synthetic analysis of one-kind of precursor (volume strain) observed at different stations.For comparison,the result of synthetic recognition of medium-short-term precursors of radon content in ground water at many stations before the great M = 7.8 Tangshan earthquake of 1976 and its M = 6.9 strong aftershock observed in the Beijing-Tianjin-Tangshan area and its vicinity of China is introduced. The precursor pattern obtained corresponds to the second precursor pattern for the Tokai area of Japan.

本文把模糊模式识别的直接方法用于综合分析多台多种手段观测到的地震前兆资料,以便提取较大地震前几个月内可能出现的中短期前兆异常信息。 所用方法的基本技巧是,对每一个台的每一种前兆观测手段建立起适当的前兆从属函数,并进而确定出多手段或多台的综合前兆从属函数。首先以综合前兆从属函数为基础,识别出某一地区较大地震前出现的中短期前兆异常,然后将其归纳成可用于地震预报的中短期前兆模式。 借助于所提出的方法,本文着重分析处理了1979—1986年间日本东海地区及其邻近地区3个倾斜台、2个验潮站、2个水氡观测站、2个水位观测点和30个体积应变观测点的大量前兆观测资料,识别出了这一期间在该地区内发生的10余次6级以上地震前的中短期前兆异常时间,并得出了两类地震前兆模式:第一类前兆模式适用于在该地区内进行多种前兆手段的综合分析预报;第二类前兆模式适用于单种前兆手段(体积应变)的多台综合分析预报。 为对比起见,文中同时给出了我国唐山7.8级地震及其6.9级强余震前多台水氡含量变化的中短期前兆综合分析识别结果,所得出的前兆模式与日本东海地区的第二类前兆模式相符。

Based on the analysis of precursory anomalies of some strong earthquake (Ms>>>>>>7.0) cases in China Mainland, this paper illustrated the large-scale characteristics of the time-space distribution of strong earthquake precursors in China Mainland: (1) the precursory field of strong earthquakes and the affected field after earthquakes are vast, which might extend all over China Mainland; (2) the abnomal time of some precursors is longer, which may be related with several strong earthquakes, even some leap over...

Based on the analysis of precursory anomalies of some strong earthquake (Ms>>>>>>7.0) cases in China Mainland, this paper illustrated the large-scale characteristics of the time-space distribution of strong earthquake precursors in China Mainland: (1) the precursory field of strong earthquakes and the affected field after earthquakes are vast, which might extend all over China Mainland; (2) the abnomal time of some precursors is longer, which may be related with several strong earthquakes, even some leap over the 4th seismic high-tide period (1966-1976) in China Mainland since this century. In addition, before strong earthquakes, the precursory anomalies occurred throughout China Mainland are relatively concentrated at the shortimpen-ding stage, formed an anomalous peak value, and some precursory anomalies are of obvious coseismic effect features. The region where the coseismic effect anomalies occur will probably be the causative area of future earthquakes. According to this, we proposed the "China-Mainland comprehensive precursory method", for earthquake prediction.

依据对中国大陆一些强震(M_s≥7.0)震例前兆异常的分析,初步阐述了中国大陆强震前兆时空分布的大尺度特征:①强震的前兆场及震后的影响场是广阔的;②有些前兆异常的时间较长,可能与几个强震有关,持续十几年。

 
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