Shallow 3-D seismic reflection surveying: Data acquisition and preliminary processing strategies
Shallow 3-D seismic reflection surveying: Data acquisition and preliminary processing strategies
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浅层三维地震反射测量：数据采集和初步处理策略
DOI：
10.1190/1.1444444
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发表时间：
1998
期刊：
影响因子：
--
通讯作者：
H. Horstmeyer
中科院分区：
文献类型：
--
作者：
F. Büker;A. Green;H. Horstmeyer
一种三维地震反射数据采集和处理的综合策略已用于瑞士山谷内沉积的冰川沉积物的研究。井下霰弹枪震源产生的地震数据由单个30 hz检波器记录，分布在357 m × 432 m的区域内，间隔为3 m × 3 m。对于大多数常见的中点（CMP）箱，记录了覆盖整个方位角范围和源接收机距离为~ 2至~ 125 m的迹线。将一个通用的处理方案应用于整个数据集和各种子集，这些子集旨在模拟以较低密度的源和接收器模式收集的数据量。从处理后的3- d子集中提取的地震剖面的比较表明，在短（<20 m）的源-接收器偏移距上记录的相对大量（>6）的迹线，对于获得最浅（<100 ms）反射层的清晰图像至关重要。频率丰富的反射……
A comprehensive strategy of 3-D seismic reflection data acquisition and processing has been used in a study of glacial sediments deposited within a Swiss mountain valley. Seismic data generated by a downhole shotgun source were recorded with single 30-Hz geophones distributed at 3 m × 3 m intervals across a 357 m × 432 m area. For most common‐midpoint (CMP) bins, traces covering a full range of azimuths and source‐receiver distances of ∼2 to ∼125 m were recorded. A common processing scheme was applied to the entire data set and to various subsets designed to simulate data volumes collected with lower density source and receiver patterns. Comparisons of seismic sections extracted from the processed 3-D subsets demonstrated that high‐fold (>40) and densely spaced (CMP bin sizes ⩽ 3 m × 3 m) data with relatively large numbers (>6) of traces recorded at short (<20 m) source‐receiver offsets were essential for obtaining clear images of the shallowest (<100 ms) reflecting horizons. Reflections rich in frequenci...