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本文分析了武都地区(λ103°.5—107°.0,φ31°.5—35°.0)空间异常,布格异常及均衡异常的特征,研究了利用空间异常与高程的相关性,推求地壳表层的平均密度以及利用均衡异常推求地壳厚度的问题,并探讨了均衡异常与地震的关系。 武都地区位于南北构造带中段的东侧,是中部山区与西部高原的连接地带,高差变化很大,构造也较复杂,在这样的地区研究重力场的特征及其与地壳结构,地震关系,是一项有意义的工作。
This paper analyzes the characteristics of the spatial anomalies, the Bouguer anomalies and the anomalous anomalies in the Wudu area (λ103 ° .5-107 ° .0, φ31 ° .5-35 ° .0), studies the correlation between spatial anomalies and elevation, The average density of crustal surface is deduced and the crustal thickness is deduced by means of equilibrium anomaly. The relationship between equilibrium anomaly and earthquake is also discussed. The Wudu area is located on the east side of the middle section of the North-South tectonic belt. It is a connecting belt between the central mountainous area and the western plateau. The elevation difference varies greatly and the structure is complicated. In this area, the characteristics of the gravitational field and its relationship with crustal structure and earthquake are studied It is a meaningful job.