Shallow seismic reflection study of a glaciated valley
Shallow seismic reflection study of a glaciated valley
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冰河谷浅层地震反射研究
DOI：
10.1190/1.1444441
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发表时间：
1998
期刊：
影响因子：
3.3
通讯作者：
H. Horstmeyer
中科院分区：
文献类型：
--
作者：
F. Büker;A. Green;H. Horstmeyer
浅层地震反射数据是沿着瑞士北部冰川苏赫尔河谷的两条长(1.6公里)相交的剖面记录的。适当地选择震源和接收器参数会产生一个高倍(36-48)的数据集，每1.25米有一个共同的中点。对于许多浅层地震反射数据集，激发道集的上部被高幅度的震源产生的噪声(如直达波、折射波、导波、面波和电波)所污染。频谱平衡在显著提高反射信号相对于源产生的噪声的强度方面是有效的，并且精心选择的顶部静音的应用确保了引导相位不会被错误地处理和错误地解释为反射。合成的处理剖面的特征是以准连续反射带为边界的不同的地震反射图案或相的分布。20-50ms(∼15-∼40m深度)的最高反射带起源于...
Shallow seismic reflection data were recorded along two long (>1.6 km) intersecting profiles in the glaciated Suhre Valley of northern Switzerland. Appropriate choice of source and receiver parameters resulted in a high‐fold (36–48) data set with common midpoints every 1.25 m. As for many shallow seismic reflection data sets, upper portions of the shot gathers were contaminated with high‐amplitude, source‐generated noise (e.g., direct, refracted, guided, surface, and airwaves). Spectral balancing was effective in significantly increasing the strength of the reflected signals relative to the source‐generated noise, and application of carefully selected top mutes ensured guided phases were not misprocessed and misinterpreted as reflections. Resultant processed sections were characterized by distributions of distinct seismic reflection patterns or facies that were bounded by quasi‐continuous reflection zones. The uppermost reflection zone at 20 to 50 ms (∼15 to ∼40 m depth) originated from a boundary between...