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对大洋钻探计划1148A井自然伽马测井曲线进行小波变换,不同尺度的小波系数反映出了原信号中的不同周期成分,相当于不同尺度的沉积旋回.根据小波系数,共识别出了3个超层序、8个层序和25个准层序组,其中的超层序和层序分界面均能较好的与前人通过其他资料所确定的地层界面相对应,而准层序组和短期基准面变化是前人通过测井外的其他资料所未能识别出的,反映出该方法划分层序更精细.
The natural gamma ray logging curve of 1148A well in ocean drilling program is subjected to wavelet transform. The wavelet coefficients of different scales reflect the different periodic components in the original signal, which are equivalent to sedimentary cycles of different scales. According to the wavelet coefficients, 3 Super-sequence, 8-sequence and 25 quasi-sequence sets, of which the super-sequence and sequence-sequence interfaces correspond well with those determined by other data before, and the quasi- And short-term changes in the datum were unrecognized by other people outside the well logs, reflecting the finer subdivision of the method.