| 随县—西安剖面地壳结构的初步研究 |
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| 引用本文： | 丁韫玉,曹家敏,黄长林,蒋国芳. 随县—西安剖面地壳结构的初步研究[J]. 地球物理学报,1987,30(01): 31-38, |
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| 作者姓名： | 丁韫玉 曹家敏 黄长林 蒋国芳 |
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| 作者单位： | 1.陕西省地震局,西安; 2.成都地质学院; 3.四川省地震局,成都 |
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| 摘 要： | 本文对随县—西安测线的地震测深资料进行了初步分析,讨论了该剖面地壳内主要界面的震相特征。通过对观测走时的分层反演及综合反演,得到三层的地壳模型。地壳的平均速度为6.33km/s,厚度约34km,上地幔顶部的速度为8.10km/s。下地壳是由高速及低速层交替构成,高速层的速度为7.39km/s。构制了主要界面的剖面起伏图,并进行了讨论。
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| 关 键 词： | 地震测深 反演 地壳模型 高（低）速层 随县—西安剖面 |
| 收稿时间： | 1985-01-29 |
| 修稿时间： | 1986-03-30 |
A PRELIMINARY STUDY OF THE STRUCTURE OF THE EARTH'S CRUST FOR THE PROFILE FROM SUIXIAN TO XIAN |
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| DING YUN-YU,CAO JIA-MIN,HUANG CHANC-LIN,JIANG GUO-FANG. A PRELIMINARY STUDY OF THE STRUCTURE OF THE EARTH'S CRUST FOR THE PROFILE FROM SUIXIAN TO XIAN[J]. Chinese Journal of Geophysics (in Chinese),1987,30(01): 31-38, |
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| Authors: | DING YUN-YU CAO JIA-MIN HUANG CHANC-LIN JIANG GUO-FANG |
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| Affiliation: | 1.The Seimological Bureau of Shanxi Province,Xian; 2.Chengdu College of Geology; 3.The Seismological Bureau of Sichuan Province,Chengdu |
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| Abstract: | In this paper,the data of deep seismic sounding （DSS） for the profile from Suixian to Xian have been studied. The phase for primary discontinuities in the Earth's crust have been discussed; The "Layered inversion" and the "Composite inversion" from observed travel tirrfes give a crustal model of three layers. The thickness and average velocity of the Earth's crust are about 34km and 6.33 km/s respectively. The apparent velocity of Pn refracted from Moho discontinuity is about 8.1km/s.It has been found that the lower crust is alternately constituted from high-velocity layer and low-velocity layer. The velocity of the High-velocity layer is 7.39 km/s.The relieves of the boundaries in the Earth's crust fer this profile have been constructed and,some-relative questions discussed. |
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| Keywords: | Seismic sounding Inversion Crustal model High （low）-velocity layers Profile from Suxian to Xian |
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