具有已知深度点的条件下解二度单一密度界面反问题的方法

本文假定密度界面上有若干点的深度为已知,制订了一种迭代方法。它不要求事先经过区域异常和局部异常的划分,而直接利用布格异常求解。此方法假定了一个基准面,但解的结果不依赖于它。本文还探讨了一种加速收敛的方法,提供了用本迭代法计算的若干理论模型及实际例子。试验表明,本方法可在袖珍计算机上实现。

A COMPUTER METHOD FOR GRAVITY INTERPRETATIONOF TWO-DIMENSIONAL DENSITY CONTRASTINTERFACE WITH SOME KNOWN DEPTHS

In most of the current methods for gravity interpretation of density contrast interface,a preliminary regional-residual correction is required and the interpretation is carried on with local anomalies; a mean datum plane is assumed and the interface is determined relative to this plane,or a known flat bottom or top is assumed. We suggest a new iteration method,assuming that there are some known depths on the Interface. Thus a preliminary regional-residual correction is not required and interpretation is carried on directly with Bouguer anomalies. Though a datum plane is assumed also,the solution does not depend on it.