Diurnal variation correction method based on linear least-squares algorithm in exploration of seamounts

LIU Bao-hua; LIU Chen-guang; PEI Yan-liang; KAN Guang-ming

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LIU Bao-hua, LIU Chen-guang, PEI Yan-liang, KAN Guang-ming. Diurnal variation correction method based on linear least-squares algorithm in exploration of seamounts[J]. Haiyang Xuebao, 2008, 30(6): 94-98.

Citation:

LIU Bao-hua, LIU Chen-guang, PEI Yan-liang, KAN Guang-ming. Diurnal variation correction method based on linear least-squares algorithm in exploration of seamounts[J]. Haiyang Xuebao, 2008, 30(6): 94-98.

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Diurnal variation correction method based on linear least-squares algorithm in exploration of seamounts

First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China;Key Laboratory of Marine Sedimentology and Environmental Geology of State Oceanic Administration, First Institute of Oceanography, State Oceanic Administration, Qingdao 2660061, China

Received Date: 2007-12-28
Rev Recd Date: 2008-04-08

Abstract

Abstract

In view of the difficulty of observation for diurnal variations during the survey of seamounts in the ocean, a correction method based on a linear least-squares algorithm was introduced.On the supposal of that the time-variation of earth magnetism can be fitted by a high-order polynomial, the coefficients of the polynomial, and the curve of diurnal variations can be obtained using the linear least-squares algorithm of an intersection error.Subtracted diurnal variations from the observed magnetic field, the magneticanomalies of seamounts removed the influence of diurnal variations can be obtained.Theoretical and real data processing shows that not only the result of the diurnal variations deleting is well, but the computercal-culating is simple.Additionally, in order to improve the result of diurnal variation correction, certain problems which may be meet with during the magnetic survey of seamounts are discussed.
- ocean survey,
- seamount,
- polynomial fitting,
- linear least-squares algorithm,
- correction of diurnal variations

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References

长春地质学院磁法教研室.磁法勘探[M].北京:地质出版社,1978.

徐文耀.我国地磁观测研究的发展[J].地球物理学报,1997,40(增刊):217-230.

国家技术监督局.海洋调查规范:海洋地质地球物理调查[S].北京:中国标准出版社,2004.

吴水根,林长松.南海磁测中磁暴、磁扰的改正探讨[J].东海海洋,1986,4(3):50-53.

HANSEN R O.Reconstruction of time-variation free total fields from marine gradiometer data[R].Geometrics Technical Report.California:GEOMETRICS INC,1985.

徐行,廖开训,盛堰.海底地磁日变观测站的设计与应用[J].海洋测绘,2005,25(1):67-69.

黄谟涛,管铮,翟国君,等.海洋重力测量网自检校平差[J].测绘学报,1999,28(2):162-171.

刘雁春,李明叁,黄谟涛.海洋测线网系统误差调整的秩亏网平差模型[J].武汉大学学报(信息科学版),2001,26(6):533-538.

范守志.海洋重磁测网调差的若干理论研究[J].海洋与湖沼,1996,27(6):569-575.

范守志.不规则海洋重磁测网的调差[J].海洋与湖沼,1997,28(3):303-309.

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