스펙트럼 분석법을 이용한 해저지자기 이상기록의 대비

서지정보

ㆍ발행기관 : 한국지구과학회 ㆍ수록지정보 : 한국지구과학회지 / 11권 / 3호
ㆍ저자명 : 권병두, 김민정

영어 초록

A computer program for automatic correlation of marine magnetic profiles is developed and tested. This method first analyze the power spectra of two series, a short one selected from the reference profile and a long one chosen from the other profile, to obtain the direction and rate of stretching and then correlation is made. The method appears to be relatively sensitive to noise contained in data, but it saves a large amount of computing time as compared with the iterative stretching and cross-correlation method. And the method is specially effective for correlating profiles whose spreading rates and direction are variable within limited range of change. Reduction to pole technique has been applied to marine magnetic profiles to correct asymmetric patterns of the data due to different magnetization direction. Correlation made between pole-reduced data sets give improved results in many cases.

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