Typhoon-induced magnetic disturbances: Cases in the western Pacific

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题名:	Typhoon-induced magnetic disturbances: Cases in the western Pacific
作者:	林立青;Chen, Chieh-Hung;Wang, Chung-Ho;Lin, Li-Ching;Hsieh, Hsien-Hsiang;Yen, Horng-Yuan;Shih, Min-Hung
贡献者:	地球科學學院地球科學前瞻應用研究中心
关键词:	Acoustic wave;Acoustic waves;Amplitudes;Atmospheric motion;Atmospheric Science;Earth and Planetary Sciences (miscellaneous);Fourier transforms;Geomagnetism;Hurricanes;Magnetic disturbance;Magnetic disturbances;Magnetic field;Magnetic fields;Magnetic storms;Monitoring systems;Oceanography;Remote monitoring;Sound waves;Stations;Storm waves;Storms;Typhoon;Typhoons
日期:	2014-01-01
上传时间:	2026-04-23 11:26:02 (UTC+8)
出版者:	Chinese Geoscience Union;Taiwan: 中華民國地球科學學會
摘要:	摘要： Three typhoons occurred over the western Pacific in September 2008 and were enhanced beyond category 3 as they approached Taiwan. The geomagnetic total intensity field recorded at 2 local monitoring stations in Taiwan and 1 remote station in Japan was utilized to examine the magnetic disturbances induced by these typhoons. Analytical results show that amplitude changes in the frequency domain, which are retrieved from the total intensity data via the Fourier transform, at the monitoring and remote stations were consistent, even though magnetic storms strongly affected the magnetic field. However, obvious discrepancies were repeatedly found in the amplitudes in the frequency band between 0.0025 - 0.007 Hz, when typhoons of category > 3 were the closest to the monitoring stations. The frequency band is different from the induction fields from either oceanic storm waves or swells, and is consistent with that of magnetic pulsations triggered by acoustic waves from upward air motion during typhoons. 出版者： Taiwan: 中華民國地球科學學會出版日期： 2014-10-01 出處： TAO : Terrestrial, atmospheric, and oceanic sciences, 2014-10, Vol.25 (5), p.647-653 資源來源： CEPS中文電子期刊版權： 2014. This work is licensed under https://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. 識別號： ISSN: 1017-0839 識別號： ISSN: 2223-8964 識別號： ISSN: 2311-7680 識別號： EISSN: 2311-7680 識別號： DOI: 10.3319/TAO.2014.05.08.01(AA)
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