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| 松辽盆地三肇凹陷延长排列法求取地壳反射纵波平均速度 | |
| 引用本文： | 李勤学,杨宝俊,于平,王建民,李占林,王洪志,王世煜.松辽盆地三肇凹陷延长排列法求取地壳反射纵波平均速度[J].地球物理学进展,2002,17(2):337-341. |
| 作者姓名： | 李勤学 杨宝俊 于平 王建民 李占林 王洪志 王世煜 |
| 作者单位： | 1. 大庆石油管理局,大庆,163357;吉林大学地球物理系,长春,130026 2. 吉林大学地球物理系,长春,130026 3. 大庆石油管理局,大庆,163357 |
| 基金项目： | 国土资源部“十五”重点科技项目 (2 0 0 0 10 10 2 0 4 ) |
| 摘 要： | 为研究Moho几何特征，提出采用常规的延长排列法求取地壳内反射纵波平均速度，进而计算盆地基底平均波速。经过综合误差分析，得出松辽盆地内地壳平均纵波速率约为6.197km/s（相应的0为10．676s)，基底平均纵波速度约为6.75km/s。通过与全球地台区，陆－陆碰撞带，裂谷带盆地之下地壳平均波速数值的比较，认为在松辽盆地内存在上地幔物质上涌过程，上涌物质的一部分进入中部地壳，引起基底平均波速增高。讨论用延长排列法求取地壳平均波速的条件，包括Moho震相的条件，地表条件和接收排列长度的条件等。 |
| 关 键 词： | 延长排列法 地壳平均纵波波速 基底 Moho |
| 文章编号： | 1004-2903(2002)02-0337-05 |
| 修稿时间： | 2001年9月20日 |
Getting the Reflection Longitudinal Wave Average Velocity in Crust with Common Extended Spread Method in Sanzhao Depression of Songliao Basin |
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| LI Qin xue,YANG Bao jun,YU Ping,WANG Jian min,LI Zhan lin,WANG Hong zhi,WANG Shi yu.Getting the Reflection Longitudinal Wave Average Velocity in Crust with Common Extended Spread Method in Sanzhao Depression of Songliao Basin[J].Progress in Geophysics,2002,17(2):337-341. | |
| Authors: | LI Qin xue YANG Bao jun YU Ping WANG Jian min LI Zhan lin WANG Hong zhi WANG Shi yu |
| Institution: | LI Qin xue 1 YANG Bao jun 2 YU Ping 2 WANG Jian min 1 LI Zhan lin 1 WANG Hong zhi 1 WANG Shi yu 2 |
| Abstract: | Common extended spread method is used in getting the reflection longitudinal wave average velocity in crust,then compute the average wave velocity of the basement in order to discuss the geometry feature of Moho.Through synthetical error analysis,we can get the average longitudinal wave velocity in the crust of the basin approximate 6.197km/s(corresponding t0 is 10.676s),and the basement's approximate 6.75km/s.It is thought that there is an upwelling process of the upper mantle under the basin through comparing with the crust's average wave velocity of globe platform , continent continent collision belt and rift basin belt.One part of the upwelling matter get into middle and lower part of the crust to cause the basement average wave velocity's increasing.Discussing the condition of getting the crust's average wave velocity with extended spread method, including the conditions of Moho seismic phase,surface and receive the length of spread and so on. |
| Keywords: | Extended spread method Crust average longitudinal wave velocity Basement Moho |
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