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seismic reflection profiles
相关语句
  地震剖面
     Structural analyses provide both theoretical and technical means for oil and gas exploration. Classification of basins can be made on the basis of the theories of global dynamic system and plate tectonics. Structural styles comparison can provide various geological models for the prediction of trap types and for the interpretation of seismic reflection profiles.
     在一定构造阶段可以形成一定的盆地几何特征,各类盆地相应地产生伸展构造体系、压缩构造体系和走滑构造体系等各种构造样式,盆地构造分析为油气勘探提供理论和技术路线,全球动力学系统和板块构造理论为盆地分类提供理论基础,构造样式对比为预测和外推盆地的构造圈闭类型及反射地震剖面解释提供各种地质模型。
短句来源
     By a meticulous study of INDEPTH deep seismic reflection profiles,the authors found that not only the strong reflection line-ups of the deep seismic reflection profiles may reflect the structure of the deep interior of the crust but also the seismic phases in the upper,middle and lower crust have somewhat different features.
     作者对INDEPTH项目深反射地震剖面的细致研究发现,在深反射地震剖面上不仅仅强反射同相轴可以反映地壳深部的结构、构造特征,而且其上的地震相特征在上、中、下地壳也有一定的差异。
短句来源
     Seismic reflection profiles is integrated with surface geologic and well data for studying structural styles, deformation intensity, formation mechanism and influence to the hydrocarbon accumulation in the northeast of Central Sichuan.
     利用地震剖面结合地表地质、钻井资料研究了川中东北部构造样式、变形强度及对油气聚集的影响。
短句来源
     Discussion on the Crust-Mantle Structures and Their Formation below the Rift Basins ——Result of the crust-mantle structures below Songliao basin revealed by the near-vertical seismic reflection profiles
     裂谷盆地下的壳-幔结构及其成因机制讨论——以由近垂直反射地震剖面揭示的松辽盆地下的壳-幔结构为例
短句来源
     The main appearances of gas hydrates in the seismic reflection profiles are the bottom simulating reflections(BSR),reduction of amplitude (amplitude blanking),velocity inversion and Velocity and Amplitude Structures(VAMPS). Large amount of gas hydrate accumulation can be detected from high resistivity(usually>100 Ω·m),sonic velocity,low volumetric density and so forth.
     甲烷水合物在地震剖面上主要表现为BSR(似海底反射 )、振幅变形 (空白反射 )、速度倒置、速度—振幅结构 ( VAMPS)等 ,大规模的甲烷水合物聚集可以通过高电阻率 ( >1 0 0欧姆·米 )声波速度、低体积密度等号数进行直接判读。
短句来源
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  反射地震剖面
     Structural analyses provide both theoretical and technical means for oil and gas exploration. Classification of basins can be made on the basis of the theories of global dynamic system and plate tectonics. Structural styles comparison can provide various geological models for the prediction of trap types and for the interpretation of seismic reflection profiles.
     在一定构造阶段可以形成一定的盆地几何特征,各类盆地相应地产生伸展构造体系、压缩构造体系和走滑构造体系等各种构造样式,盆地构造分析为油气勘探提供理论和技术路线,全球动力学系统和板块构造理论为盆地分类提供理论基础,构造样式对比为预测和外推盆地的构造圈闭类型及反射地震剖面解释提供各种地质模型。
短句来源
     Discussion on the Crust-Mantle Structures and Their Formation below the Rift Basins ——Result of the crust-mantle structures below Songliao basin revealed by the near-vertical seismic reflection profiles
     裂谷盆地下的壳-幔结构及其成因机制讨论——以由近垂直反射地震剖面揭示的松辽盆地下的壳-幔结构为例
短句来源
     The global 30000 km long deep seismic reflection profiles and three-dimensional observations of man-made earthquakes have presented a fine structure image of the lithosphere in continents and their margins9 so as to provide an im- portant basis for the study of crustal evolution and deep processes.
     全球3万公里的深反射地震剖面及三维人工地震观测,给出了大陆及其边缘地区的岩石圈细结构图像,为研究地壳演化及深部过程提供了重要依据。
短句来源
     By a meticulous study of INDEPTH deep seismic reflection profiles,the authors found that not only the strong reflection line-ups of the deep seismic reflection profiles may reflect the structure of the deep interior of the crust but also the seismic phases in the upper,middle and lower crust have somewhat different features.
     作者对INDEPTH项目深反射地震剖面的细致研究发现,在深反射地震剖面上不仅仅强反射同相轴可以反映地壳深部的结构、构造特征,而且其上的地震相特征在上、中、下地壳也有一定的差异。
短句来源
  地震反射剖面
     Two near vertical deep seismic reflection profiles (140km long, 24 fold) were completed in the 1679 Sanhe Pinggu earthquake ( M 8 0) region, running through the Xiadian fault and Ershilichangshan fault.
     在 1679年三河 -平谷 8 0级大震的震源区布置了两条总长 140km ,2 4次覆盖的近垂直深地震反射剖面 ,剖面穿过夏垫断裂及二十里长山断裂。
短句来源
     This paper reported the stratified velocity inversion on the areas around the large earthquake source computed the interval velocity of part of strata respectively, and discussed thoroughly the distributive features of the shallow velocity around the large earthquake source by using the data of 8 petroleum man-made seismic reflection profiles cross the focal region of the 1906 Shawan earthquake MS = 8.0 and its vicinity.
     本文利用穿透1906年沙湾8.0级地震震源区及其附近地区的8条石油人工地震反射剖面资料,对大震震源附近地区进行了分层速度反演,并分别计算了部分地层的层速度,对大震震源附近地区浅层速度分布特征作了较为深入的探讨。
短句来源
     In this paper we present the results of a fine structural geometric analyses of the seismic reflection profiles across the Dongying depression, where half-graben structures display the features of kink-band deformation and extensional fault-bend fold.
     本文通过对横穿东营凹陷的地震反射剖面进行精细的构造解析,发现这个半地堑盆地的伸展构造具有明显的膝折变形特征,基本上符合伸展断弯褶皱模型。 由此运用伸展断弯褶皱理论,同时按照平衡剖面原理,详细恢复了东营凹陷伸展构造的发育过程。
短句来源
     In this paper,the main contents of the international symposium are described,including:the main results and pros- pects of global deep seismic reflection profiles,the study of fine structure in the lithos- phere and reflection characteristics,three-dimentional imagery of the crust with man-made earthquakes and progress in data collection and processing methods.
     本文综合介绍了这次国际讨论会的主要内容,包括:全球深地震反射剖面的主要成果及展望、岩石圈细结构及反射性质的研究、人工地震的地壳三维成像,及数据搜集和处理方法的进展。
短句来源
     on the basis of concluding characteristic of the seismic wave group in seismic reflection profiles in Shanghai and by comparing with the stratigraphic column from testing bore holes,the bottom boundary of series in Quaternary system can be reflected in corresponding reflation wave group.
     在归纳分析上海地区数十条浅层地震反射剖面中地震波组特点的基础上,通过与验证钻孔的比较,显示第四纪地层的各统底界可在相应的反射波组中得到反映
短句来源
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  “seismic reflection profiles”译为未确定词的双语例句
     Multi-channel seismic reflection profiles 228km long and 5 Ocean Bottom Seismo- graph (OBS) stations information has been obtained in the Chaoshan depression, which is col- lected by synchronized joint operation of long spread and large power source seismic acquisition system with OBS.
     应用长排列大容量震源地震采集系统与海底地震仪同步联合作业技术,在潮汕坳陷采集了228km多道反射地震资料和5个海底地震仪(OBS)站位的地震数据。
短句来源
     New seismic reflection profiles and basement structure in the Qiangtang basin, northern Tibet
     羌塘盆地石油地震反射新剖面及基底构造浅析
短句来源
     High resolution shallow seismic reflection measurements were carried out crossing deep faults which were revealed by deep seismic reflection profiles in Yanqing-Huailai region, and high-resolution images of shallow crust were obtained in this region.
     在延庆怀来地区穿过深断裂位置开展的浅地震反射测量获得了高分辨率的地壳浅部结构图像。
短句来源
     Projecting the bedding attitudes to seismic reflection profiles may compensate some portions of ambiguous reflection gaps in seismic profiles posed by steep strata,and thus the geometric characteristics of the folds and faults in the Kuqia area were quantitatively extracted based on fault-related folding theories.
     应用获取的构造产状结合二维地震反射资料,根据断层相关褶皱原理定量地提取库车地区褶皱和断层的几何学特征.
短句来源
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  seismic reflection profiles
The source zones were established on the basis of the seismicity database, the fracturing analysis deduced from Landsat7 ETM digital enhancement and marine seismic reflection profiles.
      
- In September 1999, we collected seven high resolution seismic reflection profiles along the northern continental margin of Papua New Guinea, which targeted the source region of the 1998 tsunami that inundated Sissano Lagoon.
      
Bathymetry, sidescan sonar, and seismic reflection profiles reveal that regions of the continental slope enclosed by the scarps are chaotic, with poor penetration of seismic energy and numerous diffractions.
      
Data from high-resolution seismic reflection profiles and drill-hole sonic logs yielded a detailed velocity model.
      
A correlation between the boreholes lithostratigraphy, reflexion seismic profiles and diagenetic patterns shows that major velocity variations measured in the seismic reflection profiles correspond to dolomitized chalk intervals.
      
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A seismic reflection profile crossing the San Andreas fault zone in central California was conducted in 1978. Results are complicated by the extreme lateral heterogeneity and low velocities in the fault zone. Other evidence for severe lateral velocity change across the fault zone lies in hypocenter bias and nodal plane distortion for earthquakes on the fault. Conventional interpretation and processing methods for reflection data are hard-pressed in this situation. Using the inverse ray method of...

A seismic reflection profile crossing the San Andreas fault zone in central California was conducted in 1978. Results are complicated by the extreme lateral heterogeneity and low velocities in the fault zone. Other evidence for severe lateral velocity change across the fault zone lies in hypocenter bias and nodal plane distortion for earthquakes on the fault. Conventional interpretation and processing methods for reflection data are hard-pressed in this situation. Using the inverse ray method of May and Covey (1981), with an initial model derived from a variety of data and the impedance contrasts inferred from the true-amplitude stacked section, an iterative inversion process yields a velocity model which, while clearly non-unique, is consistent with the various lines of evidence on the fault zone structure.

1978年,在美国中加利福尼亚完成了一条横跨圣安德烈斯断层带的地震反射波剖面.由于断层带存在着强烈的侧向非均匀性和低速结构,观测结果极为复杂.这种断层带上的侧向速度急剧变化还有其它表征,诸如震中定位的偏移、地震节平面的变形等等.在这种情况下,处理反射波资料的常规计算与解释方法,已经难以实施.本文采用 May 和 Covey(1981)的射线反演方法,根据其它地球物理资料建立初始模型,再利用真实振幅的迭加剖面,推断出其阻抗对比的分布,通过反复迭代反演,获得了速度模型.反演计算的非唯一性固然存在,但该结果与断层带地区的各种地球物理证据是一致的,并揭示了圣安德烈斯断层带的细致结构.

Nowadays the wide angle reflection/refraction-the deep-crustal sounding is usually used as a seismic method in the world mainly for Studying rough structure of Moho & its overling beds. The multi-stacked technique of reflection events with long spread is another way to study the earth-crustal structures. For instance, the "CO-CORP", having been engaged in America since the beginning of 1970's, is quite useful for studying the deep-crustal struture and revealing the important deep-crustal geological...

Nowadays the wide angle reflection/refraction-the deep-crustal sounding is usually used as a seismic method in the world mainly for Studying rough structure of Moho & its overling beds. The multi-stacked technique of reflection events with long spread is another way to study the earth-crustal structures. For instance, the "CO-CORP", having been engaged in America since the beginning of 1970's, is quite useful for studying the deep-crustal struture and revealing the important deep-crustal geological phenomena. However, the S/N ratio and resolution remain to be improved for the "COCORP". The whole crustal seismic reflection profile ( WCSRP ) technique recommended here in this paper is based on the wide line profiling and combined with certain features of COCORP, thus becoming a new type of seismic reflection profile. The WCSRP has a high S/N ratio & resolution not only for middle or shallow reflections but for the deep-crustal reflections, The profile as mentioned above can serve as the whole crustal dissection, and the information could be obtained at less additional expenses if combined with the oil/gas prospecting. This seismic profile could be called WCSRP because it has special proceedings and features different from the COCORP.

目前世界上用地震方法研究地壳结构,通常借助于广角反射或折射,即地震地壳测深方法,研究对象主要是莫霍面及其上覆层的粗略结构。研究地壳的另一种方法是采用长排列的反射波多次叠加技术。如美国从七十年代开始进行的大陆地壳深反射剖面(COCORP)测量,能较好地研究深部地壳结构,揭露深部重要的地质现象。但其讯噪比及分辩力还有待提高。本文所介绍的全地壳地震反射剖面是以宽线技术为基础,结合大陆地壳深反射剖面的某些技术特点,而形成一种新的反射地震剖面。它不仅对中、浅层反射有较高的讯噪比和分辩力,而且对深部地壳反射同样有效。研究表明,浅部多次反射波由于吸收作用所造成的强烈衰减远大于同时间到达的深部一次反射波,因而在较短排列情况下(2000米左右)也能有效地研究包括莫霍面在内的深部地壳反射。所得剖面能作全地壳整体解剖,并与找油气(或找矿)密切结合起来,从而以低廉的附加费用取得深部资料。鉴于工作方法及剖面特点有别于大陆地壳深反射剖面(COCORP),故称为“全地壳地震反射剖面”。本文着重介绍它的方法技术特点及地质效果,并论证了该方法的有效性与可行性。

Seismic refraction and reflection profilings across Tangshan epicentral region have depicted a clear picture of the crustal structure in this area, where a large earthquake of magnitude 7.8 occurred in 1976.A paleozoic syncline of Kaiping, located just east of Tangshan city is a nearly vertical right lateral strike-slip fault, broken throughout the whole crust. This fault has been activated in recent time. Its horizontal displacement with. NNE direction accounts for the horizontal surficial strain...

Seismic refraction and reflection profilings across Tangshan epicentral region have depicted a clear picture of the crustal structure in this area, where a large earthquake of magnitude 7.8 occurred in 1976.A paleozoic syncline of Kaiping, located just east of Tangshan city is a nearly vertical right lateral strike-slip fault, broken throughout the whole crust. This fault has been activated in recent time. Its horizontal displacement with. NNE direction accounts for the horizontal surficial strain during the occurrence of Tangshan earthquake. The western flank of Kaiping syncline is associated with Douhe fault a normal fault striking NNE and dipping southeas-twards to a depth of about 5 km, with a dipping angle of 26°. The Douhe normal fault extends right over the epicentral region of Tangshan City. The vertical surficial strain during the great earthquake is produced by the displacement of this normal fault. The focal depth of both the main shock and the aftershocks are about 5-22 km. The deformation at this depth-range revealed from the reflection profile is different from that in the upper 5 km medium of this region. An analysis of the thermodynamic properties in the deep crustal medium has shown that transition layers consisting of alternating "brittle" and "ductile" material may prevail at the seat of earthquakes.The simultaneous occurrence of the horizontal displacement of the Kaiping Crustal Break and the movement of Douhe normal fault requires that an extensional force should exist in addition to the regional horizontal compression prevailing in North China Plain. The chaotic dipping of reflections in the upper crust and a prominent offset of 3-5 km of Moho discontinuity highly suggest that the migration of hot material from the uppermost mantle to the crust may occur in Kaiping crustal break. The thermal stress of a hot crustal channel can produce an extensional stress in the upper crust and a compressional stress in the lower crust. It explains the seismic reflection profile pretty well. The migration of hot material in Kaiping Crustal Break has two effects on the occurrence of the earthquake: it produces additional extension in the upper crust which activates the motion of Douhe normal fault, and also softens the material in Kaiping crustal break so that his strike slip fault becomes easier for moving.

通过唐山震中的地震测深以及深反射剖面,揭示了唐山震源区的浅部及深部构造图象,它与以往的推测很不相同。 唐山东面的开平向斜属中生代构造,探测的结果表明,向斜轴是一近于直立的地壳断裂。唐山地震时的水平地形变主要是由开平地壳断裂的位移引起的,它是北北东—南南西向右旋走滑断裂。开平地壳断裂西面的陡河断层是一自地表向南东方向下插的正断层,断层倾角为26°,延伸至5km深处。陡河正断层刚好插到唐山市震中区的正下方。唐山地震时的垂直地形变主要是由陡河正断层的滑动引起的。 野鸡坨—丰台断层通过震源区的西部边缘,断层以西的第四纪沉积层,在过去一百万年间曾经沿北北东方向水平滑移15km,表明它也是一个右旋的走滑断层。但是它在近代数百年间并无地震活动,唐山地震时该断层的滑动亦不明显。 开平地壳断裂和陡河正断层在唐山地震时同时滑动,说明地震的作用力除区域水平构造力外,地壳上方还存在一个附加的引张力。在开平断裂处,上部地壳的反射面倾角杂乱,而且在它的正下方,莫霍界面明显错断,因此,地幔顶部的热物质可能自开平地壳断裂中上升。热物质产生的热应力在地壳上方可表现为张应力,而在地壳下方却表现为压应力,这与反射地震剖面图的现象相符合。开平地壳断...

通过唐山震中的地震测深以及深反射剖面,揭示了唐山震源区的浅部及深部构造图象,它与以往的推测很不相同。 唐山东面的开平向斜属中生代构造,探测的结果表明,向斜轴是一近于直立的地壳断裂。唐山地震时的水平地形变主要是由开平地壳断裂的位移引起的,它是北北东—南南西向右旋走滑断裂。开平地壳断裂西面的陡河断层是一自地表向南东方向下插的正断层,断层倾角为26°,延伸至5km深处。陡河正断层刚好插到唐山市震中区的正下方。唐山地震时的垂直地形变主要是由陡河正断层的滑动引起的。 野鸡坨—丰台断层通过震源区的西部边缘,断层以西的第四纪沉积层,在过去一百万年间曾经沿北北东方向水平滑移15km,表明它也是一个右旋的走滑断层。但是它在近代数百年间并无地震活动,唐山地震时该断层的滑动亦不明显。 开平地壳断裂和陡河正断层在唐山地震时同时滑动,说明地震的作用力除区域水平构造力外,地壳上方还存在一个附加的引张力。在开平断裂处,上部地壳的反射面倾角杂乱,而且在它的正下方,莫霍界面明显错断,因此,地幔顶部的热物质可能自开平地壳断裂中上升。热物质产生的热应力在地壳上方可表现为张应力,而在地壳下方却表现为压应力,这与反射地震剖面图的现象相符合。开平地壳断裂中热物质的上升对地震的产生有?

 
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