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HU HONGXIANGup, CHEN XUEBOup2, ZHANG BIXIUup3, SONG WENRONGXIAOup4, ZHIJIANGup4, HE ZHENGQINupers . 1986: ON THE INTERPRETATION OF THE DSS DATA OF SUIXIAN-ANYANG PROFILE IN CENTRAL CHINA. Acta Seismologica Sinica, 8(1): 37-49.
Citation: HU HONGXIANGup, CHEN XUEBOup2, ZHANG BIXIUup3, SONG WENRONGXIAOup4, ZHIJIANGup4, HE ZHENGQINupers . 1986: ON THE INTERPRETATION OF THE DSS DATA OF SUIXIAN-ANYANG PROFILE IN CENTRAL CHINA. Acta Seismologica Sinica, 8(1): 37-49.
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ON THE INTERPRETATION OF THE DSS DATA OF SUIXIAN-ANYANG PROFILE IN CENTRAL CHINA

  • 1. Institute of Geophysics, State Seismologica Bureau; 2. Seismogeological Brigade, State Seismological Bureau; 3. Seismological Bureau of Sbandong Province; 4. Seismological Bureau of Henan Province

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  • Published Date: August 31, 2011
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    • Abstract
  • In this paper preliminary results of the interpretation of DSS data of the Suixian—Anyang profile are presented.The results show that the depth oif the Moho interface reaches 28 to 36 km in this region, and the average velocity in the crust here is about 6.24 km/s. The Mohb is deeper near the Qixian and Xinzheng counties. The velocity in the sedimentary layer is about 3.50 km/s, which is much thicker near the Yellow River (5 or 5.5 km). In the southern part of the profile there are granites and metamorphic rocks on the surface. The velocity of head waves near the upper boundary of crystalline basement is about 6.00 km/s. Three interfaces can be traced between this boundary and the Moho. They are P2,P03 and P04; among these the P03 is more stable. It is the reflection from an interface in the crust. The average velocity in it is 5.97 km/s, and its depth varies from 18 to 23 km. Aseismic cross-section is also presented. Distinct features about the inhomogeneity of velocity and the gradient layer in the crust near the Yellow River between Xinzheng and Xinxiang have been noticed.We have also investigated the velocity distribution in the sedimentary layers near Xinxiang and the position of the fault near Wuyang according to the data of the diffracted phases. There is possibility of the existence of intercalary layers with high velocity in the upper mantle of this region.
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    • References (1)
  • [1] 黄汲清指导,任纪舜、姜春发、张正坤、秦德余执笔,中国大地构造及其演化,科学出版社,1980.

    [2] Гамδурцев,Г. А. Ризниченко, Ю.В., Ъерзон, И. С. и др., Коррляционный метод пренных волн, Изд, АН СССР,1952.

    [3] 丁韫玉,用体波走时反演地壳结构,地球物理学报,26, 48—57, 1983.

    [4] Prodehl, C., Crustal structure of the Western United States, Geological Survey Professional Paper 1034, 7—13, 1979.

    [5] Meissner, R., Exploring deep interfaces by seismic wide angle measurements, Geophys, prospecting, 15, 598—6I6, 1967.

    [6] [德]Giese, P., Prodehl, C.,  Stein, A. 编, 国家地震局地球物理勘探大队译,欧洲中部爆破地震研究,地震出版社,1983.

    [7] 曾融生、张少泉、周海南、何正勤,唐山地震区的地壳结构及大陆地震成因的探讨,地震学报,7, 125—142,1985.

    [8] 王椿镛,层状不均匀介质中合成地震图的反射率法,地球物理学报,25, 424—433, 1982.

    [9] Blank, H. R. et al.,  Seismic Refraction Profile, Kingdom of Saudi Arabia, USGS Project Reporr, 254,1979.

    [10] Винник, Л, П., Eгоркин, Л. В., Низкосксскоостыый спой в мантии деевней паатоормы ло данным сейсмическх наблюдеий на длинных профилях, Изв. АН СССР, Фчзчка Земпч,12,12—18,1981.
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