Double beamforming processing in a seismic prospecting context
Double beamforming processing in a seismic prospecting context
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地震勘探背景下的双波束形成处理
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
B. Cacqueray
中科院分区：
文献类型：
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作者：
P. Boué;P. Roux;M. Campillo;B. Cacqueray
在地震学中，在大陆大尺度上使用大量的传感器进行深部结构成像，在较小尺度上使用大量的传感器进行勘探地球物理目标，这一点越来越普遍。地震阵列需要阵列处理，从新类型的可观的有助于更好地了解波传播的复杂性。在这些阵列处理技术中，本研究着重于基于双波束形成（DBF）方法选择和识别两个源-接收器阵列之间的不同相位的方法。在勘探地球物理尺度上，目标是从高振幅色散表面波中识别和分离低振幅体波。首先使用时域有限差分仿真的合成数据集来验证阵列处理方法。从DBF获得的方向信息，由于双平面波投影，它表明，表面波和体波可以提取具有更高的效率相比，经典的…
ABSTRACTThe use of larger numbers of sensors is becoming more common at the large, continental scale for deep-structure imaging in seismology, and at a smaller scale with exploration geophysics objectives. Seismic arrays require array processing from which new types of observables contribute to a better understanding of the wave propagation complexity. From among these array processing techniques, this study focuses on a way to select and identify different phases between two source-receiver arrays based on the double beamforming (DBF) method. At the exploration geophysics scale, the goal is to identify and separate low-amplitude body waves from high-amplitude dispersive surface waves. A synthetic data set from a finite-difference time-domain simulation is first used to validate the array processing method. From directional information obtained with DBF, and due to the double-plane wave projection, it is demonstrated that surface and body waves can be extracted with a higher efficacy compared to classical...