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本文通过模型试验,对水平梯度、解析信号模水平梯度、斜导数及其水平梯度、θ图法及其水平梯度、归一化均方差等场源边缘检测方法的应用效果开展研究,并将这些方法应用于北黄海某盆地火成岩分布特征研究.模型试验和实际应用研究表明,没有一种方法是永远有效,综合运用多种方法进行场源边缘检测,压制干扰,识别出有效的边缘特征.对比地震识别的结果,场源边缘检测方法所识别出的北黄海某盆地的火成岩分布范围更加全面、准确,对后期的油气勘探工作意义重大.
In this paper, we study the application effect of edge detection methods such as horizontal gradient, horizontal gradient of analytic signal, horizontal gradient of oblique derivative, θ-graph and its horizontal gradient, normalized mean-square-error and so on. The method is applied to study the distribution of igneous rocks in a basin of the North Yellow Sea.Model tests and practical application studies show that none of them is always effective and comprehensively use a variety of methods to detect and suppress field edge sources and identify effective edge features. As a result of seismic identification, the distribution range of igneous rocks in a certain North Yellow Sea basin identified by the field edge detection method is more comprehensive and accurate, which is of great significance to the later oil and gas exploration.