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:: Volume 4, Issue 16 (2014) ::
2014, 4(16): 101-108 Back to browse issues page
Geomagnetic Anomaly Due to Moving Body in Shallow Water
Mohammad Amir Fallah , Habibolah Abiri
Payam Noor University (PNU) , mfallah@shirazu.ac.ir
Abstract:   (26487 Views)
Wake is hydrodynamic footprint of a vessel at sea. The Earth's magnetic field makes these footprints visible using magnetic sensors. Geomagnetic anomalies induced by the motion of vessels may extend several kilometers and stay up long hours under certain conditions. Physical properties of this geomagnetic anomaly are studied in this paper. A mathematical model is derived to simulate the anomaly in shallow waters. It is shown that the peak of geomagnetic anomaly spectrum is located in the range of frequencies where the corresponding value of the ambient noise spectrum is less significant. In addition, it is shown that there is an optimum depth in which the geomagnetic anomaly has a maximum. Variation of the geomagnetic anomaly with vessel speed is studied and it is shown that higher speed vessels make stronger anomalies in geomagnetic field.
Keywords: Geomagnetic anomaly, Shallow water, Magnetometer, Vessel, Mathematical model.
Full-Text [PDF 125 kb]   (2164 Downloads)    
Type of Study: Research/ Original/ Regular Article |
Received: 2014/03/24 | Revised: 2019/07/21 | Accepted: 2014/03/24 | ePublished: 2014/03/24


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Fallah M A, Abiri H. Geomagnetic Anomaly Due to Moving Body in Shallow Water. Journal of Oceanography 2014; 4 (16) :101-108
URL: http://joc.inio.ac.ir/article-1-472-en.html


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Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Volume 4, Issue 16 (2014) Back to browse issues page
نشریه علمی پژوهشی اقیانوس شناسی Journal of Oceanography
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