| 层析反演静校正 |
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| 引用本文： | 杨文军,段云卿,姜伟才,于富文.层析反演静校正[J].物探与化探,2005,29(1):41-43. |
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| 作者姓名： | 杨文军 段云卿 姜伟才 于富文 |
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| 作者单位： | 1. 辽河石油勘探局,地球物理勘探公司,辽宁,盘锦,104010
2. 中国地质大学,地下信息探测技术与仪器教育部重点实验室,北京,100083 |
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| 摘 要： | 表层模型层析反演是一种非线性模型反演技术,它利用地震初至波射线的走时和路径反演介质速度结构,不受地表及近地表结构纵横向变化的约束。根据正演初至时间与实际初至时间的误差,修正速度模型,经反复迭代,最终达到要求的误差精度。求取静校正时采用射线法计算炮点到检波点的旅行时,从而得到基准面校正量。
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| 关 键 词： | 初至波 低降速带 层析反演 静校正 |
| 文章编号： | 1000-8918(2005)01-0041-03 |
| 收稿时间： | 2003-12-03 |
STATIC CORRECTION OF TOMOGRAPHIC INVERSION |
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| YANG Wen-jun,DUAN Yun-qing,JIANG Wei-cai,YU Fu-wen.STATIC CORRECTION OF TOMOGRAPHIC INVERSION[J].Geophysical and Geochemical Exploration,2005,29(1):41-43. |
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| Authors: | YANG Wen-jun DUAN Yun-qing JIANG Wei-cai YU Fu-wen |
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| Institution: | YANG Wen-jun~1,DUAN Yun-qing~2,JIANG Wei-cai~2,YU Fu-wen~2 |
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| Abstract: | Surface model tomographic inversion is a kind of nonlinear model inversion technique. Using traveltime and path of seismic initial wave to inverse the velocity structure of media, it is not constrained by longitudinal and transverse variations of surface and near-surface structures. On the basis of the error caused by the difference between forward initial time and practical initial time, the velocity model is revised and, through repeated iteration, the error precision required can be attained. In working out static correction, the beam method is adopted to calculate the traveltime between the shot spot and the detection spot. In this way, the datum level correction quantity can be obtained. |
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| Keywords: | tomographic inversion initial wave low velocity-falling zone static correction |
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