一、问题的提出近年来,在磁法勘探中有两种异常解释起来比较困难,一种是变化平缓而且分布范围比较宽广的异常,我们称它为“宽缓”异常;另一种异常是起厌变化剧烈,即人们常说的“杂乱”异常。第一种异常, First, the issue put forward In recent years, there are two kinds of abnormalities in the magnetic exploration more difficult to explain, one kind is gentle changes and distribution of a wide range of anomalies, we call it “wide gentle” anomaly; the other is Yiren dramatic changes, people often say that “messy” anomaly. The first exception,