| 非纵弯线气枪震源陆地反射资料叠加成像 |
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| 引用本文： | 秦晶晶,酆少英,姬计法,王宏伟,魏学强,李稳,田一鸣.非纵弯线气枪震源陆地反射资料叠加成像[J].地震学报,2020,42(5):592-603. |
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| 作者姓名： | 秦晶晶 酆少英 姬计法 王宏伟 魏学强 李稳 田一鸣 |
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| 作者单位： | 中国郑州 450002 中国地震局地球物理勘探中心 |
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| 基金项目： | 国家自然科学基金（41674140）和中国地震局物探中心青年基金（YFGEC2017003）共同资助 |
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| 摘 要： | 为探索大容量气枪震源在深部地震探测中的应用，2015年10月在安徽铜陵段开展气枪流动激发试验。该试验采用沿长江航道激发、岸边固定排列接收的工作方式，因受长江航道及江岸地形的影响，加上原始记录中干扰波发育、静校正问题突出等，基于常规的共中心点叠加的数据处理方法已不再适用。为此，开展了针对性的数据处理方法研究。本文采用初至波层析静校正、叠前多域多道集去噪以及非纵弯线共反射面元叠加等一系列处理技术，结果显示所获测线经过区域的深部构造叠加剖面较清晰。
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| 关 键 词： | 气枪震源 非纵弯线 共反射面元叠加 安徽铜陵试验 |
| 收稿时间： | 2019-10-16 |
Stack imaging of non-longitudinal bending line of land reflection seismic data generated by airgun source |
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| Institution: | Geophysical Exploration Center，China Earthquake Administration，Zhengzhou 450002，China |
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| Abstract: | In order to explore the application of large-capacity airgun source in deep seismic reflection exploration, airgun flowing excitation experiment was carried out in the Tongling area of Anhui Province in October of 2015. The experiment adopts the working mode that the source is excited in Yangtze River channel and reflected signal is received in a fixed array along the shore. Due to the influence of the Yangtze River channel and river bank topography, coupled with development of interference wave and the prominent problem of static correction in the original records, the conventional processing method of common middle point superposition is no longer applicable in this region. Therefore, we carried out a targeted research on data processing methods. And a series of processing methods are applied, such as tomographic static correction, multi-domain and multi-channel joint de-noising and common reflection surface stacking of non-longitudinal bending line data. The results show that the obtained stacking section of deep structure is clear in the area where the survey line passes through. The results of this study can provide technical support and methodological reference for similar researches in other rivers using airgun source in the future. |
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