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recent earthquake
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  近期地震
     STATiSTiCAL ANALYSIS FOR THE FEATURES OF RECENT EARTHQUAKE ACTIVITY iN THE NORTHWESTERN AREA OF HUbEI PROVINCE
     鄂西北地区近期地震活动特征的统计分析
短句来源
     Discussion on recent earthquake situation of the Southeastern Coastal Seismic Belt
     东南沿海地震带近期地震形势探讨
短句来源
     RECENT EARTHQUAKE TREND AND SEGMENTED PROBABILITIES OF EARTHQUAKE OCCURRENCE IN THE KEY REGON OF EARTHQUAKE MONITORING AND DEFENDING IN WESTERN SICHUAN
     川西地震重点监视防御区的近期地震趋势及分段发震概率
短句来源
     In this paper,the conference reports and session reports submitted to the 13~(th)World Conference on Earthquake Engineering (13WCEE) are summarized,which includes conference reports and 6 fields of study (Engineering Seismology,Geotechnical Engineering, Structure Engineering,Lifeline,Integrated Seismic Risk Reduction & Social Economic Problems and Lessons from Recent Earthquake & Earthquake Engineering in Practice).
     介绍了第13届世界地震工程大会的概况。 内容涉及大会报告和6个专题(工程地震、岩土地震工程、结构工程、生命线工程、综合减灾与社会经济问题以及近期地震的经验教训与地震工程实践)。
短句来源
  近代地震
     Based on the distribution of active falt and recent earthquake centre,the bordering land ofNingxia and Nei Mongol can be divided into 8 tectonic earthquake belts,and the characteristicsof the earthquake energy which has be released since 1970 as well as of the temperal-spatial distr-bution is studied for 8 tectonic earthquake belts.
     根据活动断裂和近代地震震中分布,对宁夏内蒙古交界地区做了构造地震带的划分。 研究了该区8个构造地震带1970年以来地震能量释放特征及地震时空分布特征。
短句来源
     The character of history and recent earthquake activity has been analyzed in North China. The result shows that the M≥5.5 earthquake activity since 1800 approaches to Poisson distribution if aftershock were ignored.
     分析了华北地震区历史和近代地震活动特征 ,得到该区 180 0年以来 5 5级以上地震活动 ,在删除余震后接近泊松过程 ,并在此基础上估计了该区未来地震活动趋势 ;
短句来源
  “recent earthquake”译为未确定词的双语例句
     Generally speaking, a calibration of design spectrum has to be done for all recent earthquake engineering work, such as the seismic micro-zoning, and risk analysis for major construction sites.
     近年的工程地震工作,如地震小区划、重大工程场地的危险性分析等,一般都要做设计谱标定。
短句来源
     Based on the abundant historic and recent earthquake intensity data, the quantitative relation between the intensity attenuation and magnitude along the confined 8 earthquake belts (or areas) in Yunnan Has been studied in this paper.
     本文用云南地区丰富的历史和现代地震的烈度资料,研究了云南划分的8个地震带区的烈度哀减与震级的定量关系。
短句来源
     The recent earthquake action inherits also original active condition.
     近期广西地震活动也明显具继承性。
短句来源
     Performance Evaluation and Statistical Test of Candidate Earthquake Precursors: Revisit in the Perspective of Geodynamics——Critical Review on the Recent Earthquake Prediction Debate
     地震前兆检验的地球动力学问题 对地震预测问题争论的评述(之三)
短句来源
     The results shdw that: the active faults of Kekexili in Qinghai are succession in Holocene and have prehistorical and recent seismic repture deformation zones, are major triggering seismic fault, in it, Wulanwulahu-Gangqiqu active fault is major triggering seismic fault of recent earthquake and has 9km long repture deformation of Tanggula earthquake with Ms=7.0 on April, 5, 1988.Through field survey, the author didn' t find volcanic activity on July, 16, 1973 was reported by abroad.
     其中乌兰乌拉湖─岗齐曲活动断裂带是现代地震的主要发震断裂,地表出露有1988年4月5日唐古拉Ms=7.0级地震的破裂形变带,长达9公里。 通过对可可西里地区的野外考察,未发现国外报道的1973年7月16日青海可可西里地区火山活动的事实。
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  recent earthquake
The main reason is not this recent earthquake by itself, but the significant increase in the mmax magnitude in the seismic source where the city and the epicenter are included.
      
The possibility of delayed strain release by aseismic faulting following a main shock is studied in relation to the recent earthquake off Nemuro peninsula, Hokkaido, Japan 17 June, 1973.
      
The fault plane solution for the Alaska earthquake of October 24, 1927, is obtained and is found to be similar to that of the more recent earthquake of July 10, 1958, which occurred in the same general region.
      
The recent earthquake of 21 January 2003 (Intensity up to VII-VIII MM in Colima state) was used to discuss some problems of application of RADIUS methodology in various locations, such as in Latin America.
      
Historical earthquakes and recent earthquake swarms indicate a moderate to high seismicity in SONATA belt that is due to high strain accumulation, flexuring of the crust and neotectonic movements of the faults in the rift zones.
      
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The North-South Seismic Zone of China has been proposed only recently. There are many questions regarding this zone which need to be discussed. In this paper we try to describe the limits of this zone, and to show certain aspects of its activity from the point of view of the time, space and magnitude distributions of historical and contemporary earthquakes occured in this zone.We find that this zone extends nearly along the meridian 104° E, all the way from North to South; it is divided into two sections...

The North-South Seismic Zone of China has been proposed only recently. There are many questions regarding this zone which need to be discussed. In this paper we try to describe the limits of this zone, and to show certain aspects of its activity from the point of view of the time, space and magnitude distributions of historical and contemporary earthquakes occured in this zone.We find that this zone extends nearly along the meridian 104° E, all the way from North to South; it is divided into two sections at about the latitude 33° N. It seems that the locations of epicenters of large earthquakes have been migrating from the north toward the south section, since 1700 A. D. indicating possibly the two sec-tions of the zone can be connected as one. This point may be further evidenced by the unison of focal mechanism solutions of recent earthquakes occurring in this zone.

中国南北地震带是最近提出的概念,有许多问题需要讨论。本文试图从该带发生的地震的时间、空间和强度分布的角度,叙述该地震带的范围及其地震活动性的特征。 我们看到此带基本上沿东经104°线从北向南延伸,北纬33°处被分为南北两段。强地震似乎从1700年以来,正从北段向南迁移,表明两段可能是连接的。这一点,从近代该带上发生的地震的震源机制解也有一些证据。

Adaptive pattern recognition has been applied to predict possible location of earthquakes and their magnitude in the Beijing-Tianjin area and its adjacent regions. It consists of discrimination between two pattern classes on the basis of binary attributes. A trial set of coefficients are progressively modified until maximum discrimination is obtained. The basic steps in the adaptive pattern recognition algorithm are as follows:1. Set power vector W to zero;2. Set a counter K to zero;3. In the epicentres of known...

Adaptive pattern recognition has been applied to predict possible location of earthquakes and their magnitude in the Beijing-Tianjin area and its adjacent regions. It consists of discrimination between two pattern classes on the basis of binary attributes. A trial set of coefficients are progressively modified until maximum discrimination is obtained. The basic steps in the adaptive pattern recognition algorithm are as follows:1. Set power vector W to zero;2. Set a counter K to zero;3. In the epicentres of known earthquakes order first of all, compute the discriminant score for first epicentre area, using equation D1 = WY1;4. If this epicentre area belongs to group A go to 5, otherwise go to step 8;5. If D1>0 go to step 11;6. Increase K by 1;7. Recompute the W from the formula W'=W+αY, and go to step 11;8. If D1<0 go to step 11;9. Increase K by 1;10. Recompute the W from the formula W'=W -αY, and go to stcp 11;11. Repeat step 3-10 for second epicentre area and others;12. If K is zero then none of the epicentres areas are misclassified namely Di = WYi correctly discriminates between two groups;If K is positive, go to step 2.First, analysis is made of the geological features of historical and recent earthquake epicentres and are then grouped to 16 factors.Strong earthquake epicentres in Beijing-Tianjin area are classified into two pattern classes: epicentres of earthquakes with magnitude of 6.0-7.0 and those above 7.0.Then previously uncatagorized or unknown earthquake areas are classified into one of the two pattern classes, based on the discriminant function produced by the computer. The results then obtained from pattern recognition are noteworthy. The Tangshan earthquake occurred just between the two areas which after the calculation are shown to be the most dangerous zones.After the Tangshan earthquake another prediction was made of future earthquake location and their magnitude. No matter whether this prediction will be accurate or not, we still consider that adaptive pattern recognition may be a promising method for prediction of earthquake location and their time of occurrance and for the study of numerical prediction of earthquake or say predictive geology.

本文应用自适应图象识别预报京津及邻区可能发生强震的地点和强度。自适应图象识别方法仅是根据二进制标志作两种图象等级的判别。此方法开始用一组试验系数逐步修改直到达到最大判别。在地震数值预报研究中,可能是一条有希望的途径。

The seismicity pattern of China, especially that seen in North China is. described in this paper. Strong earthquakes with magnitudes of M≥7.5 are found to occur at certain definite intervals of distance. In North China, recent earthquakes with magnitudes M≥7.0 occurred within a belt in the form of a stripe. The seismicity immediately before the strong earthquakes show a similar distribution pattern. The strong earthquakes of given separate regions are thus obviously correlatable. Such...

The seismicity pattern of China, especially that seen in North China is. described in this paper. Strong earthquakes with magnitudes of M≥7.5 are found to occur at certain definite intervals of distance. In North China, recent earthquakes with magnitudes M≥7.0 occurred within a belt in the form of a stripe. The seismicity immediately before the strong earthquakes show a similar distribution pattern. The strong earthquakes of given separate regions are thus obviously correlatable. Such a correlation can neither be shown to be due to a process of propagation nor be explained by the assumption that correlatable earthquakes are linked by faults. It is thought to be possibly the result of the action of an ambient stress field over a broad region. Medium and small shocks, whose numbers maintain certain constant ratios, are usually observed as preludes to the strong earthquakes.All of these facts may be considered to be the results of buckling of crustal layers under an ambient stress field. According to this view-point, we are able to calculate the values of b: equalling 0.75 for average earthquakes; 1.5 for volcanic earthquakes, reservoir earthquakes and some earthquake swarms; and 0.5 for earthquakes on the same fault system. These figures agree rather well with actual observations, so the discussion presented here might have some general significance.

本文叙述了在中国,特别是在华北地区观测到的一些地震活动性图象。高震级(M≥7.5)地震具有特定的间隔距离。华北近年7级地震分布成条块。强震前的临震地震活动具有相似性。特定地区的地震具有明显的相关性,分析其特征,表明这种相关现象不是一种传播过程;不能用“相关地震间具有直接的断层联系”来解释;而可能是大范围地层同时受力的结果。观测到大震前总有中小地震为其作前奏,并且大小地震间遵循一定的比例关系。以上这些活动性图象,可用地层受力屈曲的机理给以解释。根据这种观点,可推算出一般地震的b值将取0.75,火山地震、水库地震以及某些震群的b值将取1.5,而沿断层分布的地震的b值将为0.5.这些数值与实际情况比较符合,因而本文叙述的现象与分析结果,可能具有普遍意义。

 
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