Magnetic Anomalies of Submarine Pipeline Based on Theoretical Calculation and Actual Measurement

doi:10.1109/TMAG.2019.2898951

	Magnetic Anomalies of Submarine Pipeline Based on Theoretical Calculation and Actual Measurement
	Wang, Fangqi; Song, Yupeng; Dong, Lifeng; Tao, Changfei; Lin, Xubo
刊名	IEEE TRANSACTIONS ON MAGNETICS
	2019-04
卷号	55 期号:4
关键词	Forward model remanent magnetization submarine pipeline total-field magnetic anomaly (TMA)
ISSN号	0018-9464
DOI	10.1109/TMAG.2019.2898951
英文摘要	Marine magnetic method is widely used for detecting and locating the submarine pipeline. In this paper, the theoretical calculation model of total-field magnetic anomalies (TMAs) of submarine pipeline was derived based on Poisson's equation. Taking a submarine gas pipeline for example, the TMA theoretical calculation and the verification sea test were carried out. Based on the calculation, the influences that the geomagnetic parameters, pipeline parameters, and measuring plane height had on the TMA characteristics of pipeline were analyzed. The TMA shape changed slightly with geomagnetic declination D and was significantly influenced by the azimuth theta of the pipeline. The corresponded location of the pipeline on the TMA profile varied with D seemed to be symmetrical with D = 0 degrees as the center, but within 1.0 m, and changed greatly with theta with an offset distance of upping to 4.4 m. The TMA amplitude was linearly positively correlated with geomagnetic intensity T-0, quadratic difference of outer and inner diameters of pipeline d(1) (2)-d(2) (2), and susceptibility k, respectively, and was inversely proportional to the square of measuring plane height R, and changed greatly with D, I, and theta but without obvious correlation. The TMA width changed greatly with I and theta, respectively, but without obvious correlation, and was approximately positively correlated with R. On the TMA profile that was perpendicular to the pipeline, there would be an obvious "pulse" anomaly on the smooth profile, and the location of pipeline corresponded a specific point near the TMA maximum point depending on D and theta, so that the accurate location of the pipeline needed to be corrected according to these two parameters, not just the TMA maximum point.
资助项目	National Key Research and Development Plan of China[2017YFC0306003]
WOS关键词	INVERSION ; FIELD
WOS研究方向	Engineering ; Physics
语种	英语
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
WOS记录号	WOS:000461842200001
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/24823]
专题	自然资源部第一海洋研究所
通讯作者	Wang, Fangqi
作者单位	Minist Nat Resources, Inst Oceanog 1, Qingdao 266061, Peoples R China
推荐引用方式 GB/T 7714	Wang, Fangqi,Song, Yupeng,Dong, Lifeng,et al. Magnetic Anomalies of Submarine Pipeline Based on Theoretical Calculation and Actual Measurement[J]. IEEE TRANSACTIONS ON MAGNETICS,2019,55(4).
APA	Wang, Fangqi,Song, Yupeng,Dong, Lifeng,Tao, Changfei,&Lin, Xubo.(2019).Magnetic Anomalies of Submarine Pipeline Based on Theoretical Calculation and Actual Measurement.IEEE TRANSACTIONS ON MAGNETICS,55(4).
MLA	Wang, Fangqi,et al."Magnetic Anomalies of Submarine Pipeline Based on Theoretical Calculation and Actual Measurement".IEEE TRANSACTIONS ON MAGNETICS 55.4(2019).