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地震转换波测深
相关语句
  deep sounding by converted waves of earthquakes
     The method of deep sounding by converted waves of earthquakes was used for the first time in investigation of deep crust structures in Fuzhou area of coast Southeast China. A cross-section of deep crust structure with NE direction and four contour maps of major crust boundaries for the area have been obtained.
     地震转换波测深法首次在我国东南沿海的福州地区进行地壳深部构造的探测,得出了该区地壳中的4个主要界面的构造形态图和沿北东方向穿越本区的地壳深部构造剖面图。
短句来源
  seismic converted wave sounding
     SEISMIC CONVERTED WAVE SOUNDING ON URUMQI─KUERLE PROFILE
     乌鲁木齐──库尔勒地震转换波测深
短句来源
  “地震转换波测深”译为未确定词的双语例句
     PROGRAM PACKAGE DSCW-86 FOR PROCESSING CONVERTED-WAVE SOUNDINGS
     地震转换波测深资料数据处理程序包DSCW86
短句来源
     This work deals with the structure of crust and upper mantle as revealed by an experimental study along the Kangzhuang-Dachang ( 康庄一大厂) profile near Peking, China by observing converted seismic waves of earthquakes.
     本文介绍北京地区康庄—大厂剖面试验的地震转换波测深法得到的地壳、上地幔结构.
短句来源
     THE RESULTS OF DEEP SOUNDING BY USING CONVERTED WAVES OF EARTHQUAKES IN THE BEIJING-TIANJIN- TANGSHAN REGION
     京津唐地区地震转换波测深结果
短句来源
     INVESTIGATION OF CRUST STRUCTURE IN FUZHOU AREA BY MEANS OF CONVERTED WAVES OF EARTHQUAKES
     福州地区地壳结构的地震转换波测深研究
短句来源
     During the past 4 years (1975-1979) eight seismic profiles have been compiled by using the method of earthquake-generating converted waves in the Beijing-Tianjin-Tangshan region.
     1975—1979年间在京津唐地区完成了八条地震转换波测深的剖面工作,本文介绍所取得的主要成果。
短句来源
更多       
  相似匹配句对
     SEISMIC CONVERTED WAVE SOUNDING ON URUMQI─KUERLE PROFILE
     乌鲁木齐──库尔勒地震转换测深
短句来源
     DEEP SOUNDING SURVEY BY CONVERTED WAVES OF EARTHQUAKES IN CENTRAL PART OF THE TARIM BASIN AND ITS INTERPRETATION
     塔里木盆地中部地震转换测深及其解释
短句来源
     THE RESULTS OF DEEP SOUNDING BY USING CONVERTED WAVES OF EARTHQUAKES IN THE BEIJING-TIANJIN- TANGSHAN REGION
     京津唐地区地震转换测深结果
短句来源
     PROGRAM PACKAGE DSCW-86 FOR PROCESSING CONVERTED-WAVE SOUNDINGS
     地震转换测深资料数据处理程序包DSCW86
短句来源
     INVESTIGATION OF CRUST STRUCTURE IN FUZHOU AREA BY MEANS OF CONVERTED WAVES OF EARTHQUAKES
     福州地区地壳结构的地震转换测深研究
短句来源
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  deep sounding by converted waves of earthquakes
The separation and parameter determination of PS converted phases in deep sounding by converted waves of earthquakes
      
The practice of deep sounding by converted waves of Earthquakes shows that the time duration of the PS converted phases is usually longer than the arrival time delay between the converted phases coming from the adjacent boundaries.
      


This work deals with the structure of crust and upper mantle as revealed by an experimental study along the Kangzhuang-Dachang ( 康庄一大厂) profile near Peking, China by observing converted seismic waves of earthquakes. Layered and faulted block structures are indicated. By analyzing and comparing the superficial and deeper structural features of the region, it can be found that a nearly NWW-SBB oriented strong horizontal stress field has been in action within the crust and thus given rise to the up- and downwarping...

This work deals with the structure of crust and upper mantle as revealed by an experimental study along the Kangzhuang-Dachang ( 康庄一大厂) profile near Peking, China by observing converted seismic waves of earthquakes. Layered and faulted block structures are indicated. By analyzing and comparing the superficial and deeper structural features of the region, it can be found that a nearly NWW-SBB oriented strong horizontal stress field has been in action within the crust and thus given rise to the up- and downwarping structural units of the region.Hypocentral distributions of earthquakes in this region may be that west of the Gaoliying(高丽营) fault, most of the earthquake foci are located on the top and bottom surfaces of the so-called granitic layer, while east of the Gaoliying fault, they are mostly on the fault belt itself. (Fig. 1).

本文介绍北京地区康庄—大厂剖面试验的地震转换波测深法得到的地壳、上地幔结构.显示层状和断块的特征。分析本区地表构造与深部构造的特征及其相互关系表明,本区地壳内存在过很强的近 NWW-SEE 向水平压应力,从而造成本区隆、凹的各基本构造单元.本区震源分布有两种情况:高丽营断裂以西震源大都分布在“花岗岩”层的顶面和底面上,在此断裂以东地区震源主要分布在断裂带上(图1).

During the past 4 years (1975-1979) eight seismic profiles have been compiled by using the method of earthquake-generating converted waves in the Beijing-Tianjin-Tangshan region. Some details about the method of interpretating these data and the important results obtained are presented in this paper. This method is very useful in the regional investigations for earth's crust and upper mantle.The comparison of the deep-seated structures and the distribution of earthquakes in the studied region indicates that...

During the past 4 years (1975-1979) eight seismic profiles have been compiled by using the method of earthquake-generating converted waves in the Beijing-Tianjin-Tangshan region. Some details about the method of interpretating these data and the important results obtained are presented in this paper. This method is very useful in the regional investigations for earth's crust and upper mantle.The comparison of the deep-seated structures and the distribution of earthquakes in the studied region indicates that all hypocentres of strong earthquakes just filled in some particular position of the granitic layer and that the Tangshan and Mafan strong earthquake regions are similar each other in the deep-seated structure characteristics, such as relative uplift of the granitic layer, intensive depression (concavity) of interfaces in upper mantle, sharp thickening of lithosphere and existence of deep-seated faults in the region under investigation.

1975—1979年间在京津唐地区完成了八条地震转换波测深的剖面工作,本文介绍所取得的主要成果。结果表明转换波法用于地壳、上地幔深部结构的探测是有效的。深部构造剖面与震源分布的对比表明,本区几乎所有强震震源都分布在“花岗岩”层的某些特殊部位上。唐山和马坊大震地区的深部构造具有相似的特征,这就是“花岗岩”层的相对隆起,上地幔界面的强烈凹陷,岩石圈相应地急剧增厚以及存在深大断裂。

This paper discribes the results of investigation of deep structures in Tangshan earthquake area by using method of P to SV converted waves.6-7 groups of PS converted waves can be recognized in the area. The most stable of which are the groups of PSG and PSM coming from the top and bottom boundaries G and M of the crystalline crust. But in the earthquake source zone an additional PS wave group has been recognized in the middle part of the crust. Besides, the intensity, as well as the stability of the PSM wave...

This paper discribes the results of investigation of deep structures in Tangshan earthquake area by using method of P to SV converted waves.6-7 groups of PS converted waves can be recognized in the area. The most stable of which are the groups of PSG and PSM coming from the top and bottom boundaries G and M of the crystalline crust. But in the earthquake source zone an additional PS wave group has been recognized in the middle part of the crust. Besides, the intensity, as well as the stability of the PSM wave group are reduced apparently, and the time delay of PS waves propagating through the source zone! is increased greatly in comparison with the sorrounding area of Tangshan. All these anomalies of PS wave characteristic indicate that the physical property of the crust layer has changed in the earthquake source zone.Two cross-sections of deep structure were obtained along the observed lines. The deep structures are very complicated beneath the Tangshan area which consists of sharp uplifting of the boundary G in upper part of the crust and subsidence of the boundaries in lower crust and upper mantle, appearence of an additional layer in the middle part of the crust, thickening of the middle and lower layers of the crust, and the presence of a set of deep faults in the vicinity of Tangshan earthquake area.Comparison of the deep structures with distribution of the hypocentres in the area shows that most of the hypocentres are located in the upper part of the crust between boundaries G and C, and the hypocentres of the mainshock and large aftershocks are distributed near the top-boundary of the middle layer of the crust. It means that the location of strong earthquakes is controlled by position of the middle layer of the crust. It is suggested that the strong vertical uplift-subsidence differential movement in the upper mantle beneath Tangshan area may be an important triggering factor for the occurrence of the Tangshan earthquake.

本文介绍利用地震转换波测深法研究1976年7.8级唐山大震区深部构造的某些结果,得出了沿两条测线的深部构造剖面图。发现在极震区的数十公里的范围内,地壳和上地幔具有异常结构,在地壳中部比震区外围多出一个中间层位,埋深约12—20km,地壳上部界面向上挠曲,而莫霍面和上地幔顶部界面却强烈地向下挠曲,引起了震区岩石圈厚度的加大,在震区存在深浅不等的深部断裂。深部构造与震源分布的对比表明,唐山主震和绝大多数余震均分布在壳内中间层之上,有的甚至就分布在壳内中间层的上、下界面附近。转换波测深结果表明,本区地壳上地幔中强烈的升降差异运动可能是唐山大震的重要促发因素。

 
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