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deep reflection profile
相关语句
  深反射剖面
     Speaking from the pettophysical angle,the deep reflection profile characterized by the distinction be-tween strong and weak reflection represented dif-ferent contact relation of lithology and their divid-ed boundary,for example,the stronger reflection from extensional lower crust represents tough shear zone.
     从岩石物性的角度来讲,强弱分明的深反射剖面体现了不同岩性的接触关系与划分边界,如拉张下地壳的强反射表示韧性剪切带等。
短句来源
  相似匹配句对
     A Deep Seismic Reflection Profile across a Foreland of the Dabie Orogen
     大别山造山带前陆深地震反射剖面
短句来源
     The deep reflection seismic profile plays an important role in deep geological survey.
     在深部地质调查中,深反射地震剖面发挥了重要作用。
短句来源
     To the Deep Development Ethics by Reflection to Capital
     走向资本批判的深层发展伦理学
短句来源
     THE STATE OF THE ART OF DEEP SEISMIC REFLECTION
     国外深地震反射研究之现状
短句来源
     New development of deep profile control agent
     深部调剖剂研究新进展
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In order to investigate the interrelations of crust and upper mantle tectonics and its velocity distribution as well as seismicity in the Yanhuai basin and its surrounding area, a nearly EW trending Beijing Huailai Fengzhen wide angle reflection/refraction profile, which obliquely passes through seismic zone of Zhangjiakou Bohai Sea and coincides with a deep reflection profile in the Yanhuai basin, was completed recently. The results show: The crust presents layered structures and its thickness gradually...

In order to investigate the interrelations of crust and upper mantle tectonics and its velocity distribution as well as seismicity in the Yanhuai basin and its surrounding area, a nearly EW trending Beijing Huailai Fengzhen wide angle reflection/refraction profile, which obliquely passes through seismic zone of Zhangjiakou Bohai Sea and coincides with a deep reflection profile in the Yanhuai basin, was completed recently. The results show: The crust presents layered structures and its thickness gradually increases from 35.0 km in Shunyi to 42.0 km in the west end of the profile; the interior crustal interfaces appear approximately horizontal or slowly sloping down from east to west; In the Yanhuai basin, the crust presents the characteristics of higher velocities alternating with the lower ones and the low velocity bodies obviously exist in the lower part of upper crust. Moreover, there are two deep crustal fault zones which stretch to the Moho discontinuity, are closely related with the seismicity in the Yanhuai area.

tudyoncrustmantletectonicsanditsvelocitystructurealongtheBeijingHuailaiFengzhenprofileZHIPINGZHU(祝治平)XIANKANGZHANG(张先康)...

One of major difficulties in a process of deep geologic interpretation by using deep seismic reflection data is to identify coherent events of seismic reflection under high noise background, which can determine the model of underground reflection structures. Common-used method is to draw line plot, aimed at simplifying seismic reflection and emphasizing underground reflection structures. On the basis of summing up more than 20 years' devel-opment of deep reflected seismic technology, the paper presented and...

One of major difficulties in a process of deep geologic interpretation by using deep seismic reflection data is to identify coherent events of seismic reflection under high noise background, which can determine the model of underground reflection structures. Common-used method is to draw line plot, aimed at simplifying seismic reflection and emphasizing underground reflection structures. On the basis of summing up more than 20 years' devel-opment of deep reflected seismic technology, the paper presented and completed X2 distribution tech-nique of deep reflected seismic data. According to characters of deep reflected seismic technology and starting from the angle of reflected structure and energy, the method emphasized the deep structures. It is considered by interpretation that the sections with deep reflected structural line plot re-sulted from X2 distribution processing can clearly reflect the recent structural framework, the sections stacking structure and energy plot together are characterized by the distinction between strong and weak reflection: the weaker reflection repre-sents the trail remained by older structural movement or by structural movement having a smaller amplitude; the stronger reflection represents the trail remained by newer structural movement or by structural movement having a larger amplitude. Speaking from the pettophysical angle,the deep reflection profile characterized by the distinction be-tween strong and weak reflection represented dif-ferent contact relation of lithology and their divid-ed boundary,for example,the stronger reflection from extensional lower crust represents tough shear zone. The studied results show that Songliao lithosphere has character of typical continental rupture rift:a over 20 km thick Phanerozoic strata, uplift and crushed Moho and fault system resulted from tensile and intermittent press,which is considered that significant thickness of Mesozoic and Paleozoic layers existed in middle and upper crust and is accompanied with fracture system penetrat-ing the crust,having better deep oil-gas migratory and accumulational prospectiveness.

人们在利用深反射地震资料进行深部地质解释过程中所面临的主要困难之一是在高噪声背景下识别地震反射的相干同相轴,以便确定地下反射结构的模式。常用的解决办法是制作线条图,目的是简化地震反射、突出地下反射结构。在总结20多年来深反射地震技术发展的基础上,本文提出并实现了深反射地震资料的X2分布处理技术。该方法根据深反射地震技术的特点,从反射结构与能量的角度,突出深部构造。认为经X2分布处理得到的深反射构造线条图剖面能够清晰地反映现今的地下构造格架,而构造与能量叠合剖面,强弱显示分明,其中较弱的反射表示老的或幅度不大的构造运动留下的痕迹,较强的反射表示新的或幅度较大的构造运动留下的痕迹。从岩石物性的角度来讲,强弱分明的深反射剖面体现了不同岩性的接触关系与划分边界,如拉张下地壳的强反射表示韧性剪切带等。研究结果表明,松辽岩石圈呈现典型的大陆裂谷特征:超过20km厚的显生宙地层,上隆而且破碎的莫霍面,以及由拉张和间歇性挤压造成的断裂体系等。初步认为该区上中地壳存在巨厚前中生代及古生代地层,并伴有多组穿过地壳的断裂系统,具有较好的深部油气运移及储藏前景。

Tai'an-Xinzhou refraction and wide-angle reflection profile goes throughout the structural units of Luxi uplift,North China depression and Taihang Mountain uplift.And the middle segment of the profile crosses Xingtai seismic area in Hebei Province.A series of waveform records in this profile are processed by using wavelet multi-scale analysis.The phase features of Xingtai seismic area and its adjacent area are obtained.The results show that the Moho below Xingtai seismic area is complex...

Tai'an-Xinzhou refraction and wide-angle reflection profile goes throughout the structural units of Luxi uplift,North China depression and Taihang Mountain uplift.And the middle segment of the profile crosses Xingtai seismic area in Hebei Province.A series of waveform records in this profile are processed by using wavelet multi-scale analysis.The phase features of Xingtai seismic area and its adjacent area are obtained.The results show that the Moho below Xingtai seismic area is complex construction,which may be double-layer,but the Moho in the adjacent area presents clearer first-order discontinuity surface.The deep reflection profiles in the researched region also indicate that the Moho below Xingtai seismic area is crust——mantle transitional zone.And in mid-upper crust,there are detachment structure and the deep fault which extends to the Moho.So the complex structure and morpholoy of the Moho are the deep tectonic background of Xingtai seismic area.

泰安—忻州折射/宽角反射剖面穿过鲁西隆起、华北坳陷、太行山隆起几个构造单元,剖面中段穿过河北省的邢台地震区.利用小波多尺度分析处理了该剖面的几炮波形记录,得到邢台地震区和相邻地段的震相特征.结果表明,邢台地震区的下方莫霍面为复杂结构,可能为双层莫霍面,而在相邻地段莫霍面为较清晰的一级间断面.研究区的深反射剖面结果同样表明,邢台地震区的下方莫霍面为壳幔过渡带,并且在中、上地壳有滑脱构造和延伸到莫霍面的深断裂.复杂的莫霍面结构和形态是邢台地震区的深部构造背景.

 
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