| 伪二维弹性波联合反演近地表的速度和衰减 |
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| 引用本文： | 王月,张捷.伪二维弹性波联合反演近地表的速度和衰减[J].地震学报,2018,40(5):595-608. |
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| 作者姓名： | 王月 张捷 |
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| 作者单位： | 1.中国合肥 230026 中国科学技术大学地球和空间科学学院 |
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| 基金项目： | 国家自然科学基金（41374132）和中石油东方地球物理勘探有限责任公司横向项目（BGP201206780）联合资助 |
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| 摘 要： | 利用弹性波的初至波和面波，应用交叉梯度算子，联合反演了近地表的二维纵横波速度和衰减参数，并提出了采用一维弹性波正演模拟，应用二维Tikhonov正则化，同时反演出二维速度模型和衰减模型的方法。理论模型测试和实际数据应用结果均表明本文算法极大地提高了计算效率，同时能够反演出可靠的速度模型和衰减模型。
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| 关 键 词： | 联合反演 波形反演 速度 衰减 |
| 收稿时间： | 2017-11-09 |
Pseudo 2D joint elastic waveform inversion for velocities and attenuation in the near surface |
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| Institution: | 1.Earth and Space School，University of Science and Technology of China，Hefei 230026，China2.China Earthquake Networks Center，Beijing 100045，China |
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| Abstract: | In this study, by applying cross-gradient constraints, we joint early arrivals and surface waves to invert the 2D P-wave velocity, S-wave velocity, QP and QS simultaneously for the near-surface area. In order to improve the efficiency of computation, we propose a method that employs 1D elastic forward modeling and applies 2D Tikhonov regularization to invert the 2D velocity structures and attenuation model. Synthetic tests and real data application illustrate that the method can greatly improve the computational efficiency, and is able to invert reliable velocity and attenuation models simultaneously. |
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