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   深部地质特征 的翻译结果: 查询用时:0.376秒
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深部地质特征     
相关语句
  deep geological characteristics
     The multi-pyroxene provides a base for the inversion of deep geological characteristics in this area.
     多世代辉石的出现为反演该区深部地质特征提供了依据。
短句来源
  deep geologic feature
     The characteristics of gravity, magnetic and geothermal fields in Qaidam basin are analyzed. According to the information of geophysical field, the basin's sedimentary structure, regional structural framework and deep geologic feature are discussed, providing scientific bases for the petroleum exploration, widening applied domains of non-seismic geophysical information.
     分析了盆地重力场、磁场和温度场特征,根据地球物理场信息探讨了盆地沉积构造、区域构造格架和深部地质特征,并与塔里木盆地、准噶尔盆地的地球物理场进行了对比,为油气勘探部署提供了科学依据,拓宽了非地震地球物理信息的应用领域,而且对其它含油气盆地的综合地质与地球物理研究和油气勘探部署也有借鉴作用,同时也有助于区域大地构造和盆地对比研究。
短句来源
  deep geological feature
     X~2 distribution processing of deep seismic reflection in north of Songliao basin and its deep geological feature.
     松辽盆地北部深反射地震X~2分布处理及其深部地质特征
短句来源
     DEEP GEOLOGICAL FEATURE AND DYNAMIC EVOLUTION OF THE SONGLIAO BASIN
     松辽盆地深部地质特征及其盆地动力学演化
短句来源
  deep geologic features
     Geophysical Field and Deep Geologic Features in Qaidam Basin
     柴达木盆地地球物理场及其深部地质特征
短句来源

 

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    This paper discusses the deep geological features in Panxi region obtained by deep seismic sounding from 1984 to 1985. This region has a thick crust of 50-60 km, and possesses multi-layed structure with lower velocity layers alternating with the higher velocity ones and fault-block tectonices. Of the five main velocity interfaces, R4 is steady and clear and may be regarded as the interface between the upper and lower crust; Re is steady and shows stronger reflection. It is the MOHO. The MOHO is deeper in the...

    This paper discusses the deep geological features in Panxi region obtained by deep seismic sounding from 1984 to 1985. This region has a thick crust of 50-60 km, and possesses multi-layed structure with lower velocity layers alternating with the higher velocity ones and fault-block tectonices. Of the five main velocity interfaces, R4 is steady and clear and may be regarded as the interface between the upper and lower crust; Re is steady and shows stronger reflection. It is the MOHO. The MOHO is deeper in the north and shallower in the south (56 -50 km) along the tectonic zone. It is deeper in the west and shallower in the east (60-48 km) across the zone. The upper-crustal thickness is thinner and the velocity is non-homogeneous. The lower-crustal is thicker and the yelocity is steady within the tectonic zone. The lower-velocity layers at the bottom of the upper-crust is thinner and shallower inside than outside of the zone. The P, velocity is lower, 7.54-7.80 km/s, and belongs to the crust-mantle transition zone. Its thickness is 13-22 km. Xiaojiang fault, Sikai fault, Anninghe fault and Jinhe fault etc. are crustal and ultracrust faults and they are mostly thrusts faults. Most of these structural and tectonic features show that this tectonic zone is a young erogenic zone of the continental plateau.

    根据1984—1985年地震测深资料,论述了攀西地区的深部地质特征。该区地壳厚50—60km;具高、低速相间的多层结构及断块构造;五个主要速度界面中,界面R_4稳定且清晰,为上、下地壳的分界面,R_6稳定并有较强的能量反射,为壳、幔之间的界面(莫霍面),莫霍面沿构造带北深南浅(56—50km),横穿构造带西深东浅(60—48km)。构造带内的上地壳较薄,纵横速度变化均较大,而下地壳较厚,速度较均匀,上地壳底部的低速层,在构造带内较带外薄而浅,P_n速度较低,为7.54—7.80km/s,属壳-幔过渡带,厚13—22km。小江、四开、安宁河及金河等断裂为超壳型或壳内断裂,多为逆冲断层。该构造带的各种深部特征表明它为大陆高原型年轻构造带。

    Based on the statistical formula V=8.4-0.18h, this paper calculates the average velocity of P wave at the 150km depth of the upper mantle in northern Xinjiang and its adjoining regions. The results show that the lateral velocity variation of the upper mantle is obvious. The velocity of P wave in the Altai diwa region is low, between-8.0 km/s and 7.8km/s, and decreases from southwest to suortheast. The Junggar diwa region is characterized by high velocity of P wave, which is higher than 8.2km/s. The Tienshan...

    Based on the statistical formula V=8.4-0.18h, this paper calculates the average velocity of P wave at the 150km depth of the upper mantle in northern Xinjiang and its adjoining regions. The results show that the lateral velocity variation of the upper mantle is obvious. The velocity of P wave in the Altai diwa region is low, between-8.0 km/s and 7.8km/s, and decreases from southwest to suortheast. The Junggar diwa region is characterized by high velocity of P wave, which is higher than 8.2km/s. The Tienshan diwa region is located between two high velccity regions (Vp=8.2km/s); the average velocity of the upper mantle is generally lower than 7.9km/s and the lowest velocity is 7.4km/s. The lateral velocity variation of the upper mantle indicates that differcnt tectonic units differ in deep geological features.The results have been testd by the average velocity of P wave in the upper mantle obtained from deep seismic sounding. The variation of the residuum be- wteen the calculated results and the results of deep seismic sounding also reflects the characteristics of the tectonic units. General speaking, stable regions usually have smaller residuum than mobile regions. The test suggests that the formula is valuable for evaluating the state of the upper mantle when data on seismic sounding lack in the study region but are available in adjoining regions.

    利用统计公式:V_P=8.4—0.18h,研究了北疆及邻区上地幔上部150公里深度范围纵波平均速度,表明存在明显的侧向交化。阿尔泰地洼区为8.0—7.2(km/s),由SW至NE递减;准噶尔地洼区一般大于8.2较稳定;天山地洼区一般小于8.0,最低值达7.4,夹于准噶尔地洼区与塔里木地洼区两个高速区(大于8.2)之间,这种侧向变化反映了构造单元之间具有不同的深部地质特征。利用相应的实测纵波速度平均值进行了检验。残差值的变化亦反映了各构造单元的性质。

    In this paper,the authors use 3-D magnetic stratum inversion calculation to study the relief of Curie iso-geothermal surface in Bohai Sea and its abjacent regions,and along with the surface heat flow,the electrical structure of crust and upper mantle,analyze the deep seated geological characteristics.It is found that in Bohai Sea and the region from Kenli to Huanghekou in the northern part of Qiyang depression,the depths of Curie surface is only 13~20km while it reaches 22~24km at Jiao-Liao and Chengde region.The...

    In this paper,the authors use 3-D magnetic stratum inversion calculation to study the relief of Curie iso-geothermal surface in Bohai Sea and its abjacent regions,and along with the surface heat flow,the electrical structure of crust and upper mantle,analyze the deep seated geological characteristics.It is found that in Bohai Sea and the region from Kenli to Huanghekou in the northern part of Qiyang depression,the depths of Curie surface is only 13~20km while it reaches 22~24km at Jiao-Liao and Chengde region.The aim of our research is to Present new suggestions for the earthquake zoning and the earthquake disaster prevention.

    采用三维磁性层反演方法,研究了渤海及周边地区的居里等温面起伏。结合地表热流值、地壳厚度及地壳上地幔的电性结构,分析了研究区的深部地质特征。发现渤海及济阳坳陷北部的垦利至黄河口地区,居里面的深度只有13~20km,而胶辽和承德地区却深达22~24km。该项研究旨在对地震区划的深部构造背景问题提出新的建议。

     
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