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| Characteristics of Underwater Electric Field Based on Long-base Line Measurement |
| Received:December 07, 2016 Revised:May 15, 2017 |
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| DOI：10.7643/ issn.1672-9242.2017.04.008 |
| KeyWord:underwater electric field of ocean environment typical frequency point distribution of probability density long-base line measurement |
| Author | Institution |
| MO Li-xin |
Naval Agents Room in No.426 Shipyard, Dalian , China |
| JIAO Da-wen |
Dalian Scientific Test and Control Technology Institute, Dalian , China |
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| Abstract: |
| Objective To research spatial distribution of electric field in marine environment. Methods Certain spatial gain was supplied based on the long-base line measurement system to increase the strength of measurement signal and measure the variation of amplitude of different measurement bodies in low-frequency electric field and the probability density distribution of 0.1, 0.2, 0.5, 1 and 10 Hz canonical frequency points in 24 hours. Results The spatial distribution of underwater electric field was various due to the different electrode separation, but the overall change tendency was almost the same. The contributions to the whole from frequency points 0.1, 0.2, 0.5 and 1 Hz decreased with the increase of frequency, while the rule of amplitude variation at 10 Hz was not apparent. In the 24 hours of continuous observation, the DC-1 Hz amplitude distribution of extremely low frequency electric field didn’t comply with normal distribution, but presented regularity with time change. Conclusion The spatial distribution characters of underwater electric field in ocean environment are obtained. |
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