A statistical study of low latitude F region irregularities at Brazilian longitudinal sector response to geomagnetic storms during post-sunset hours in solar cycle 23

NCUIR > College of Earth Sciences > DEPARTMENT OF SPACE SCIENCE AND ENGINEERING > journal & Dissertation > Item 987654321/102105

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/102105

Title:	A statistical study of low latitude F region irregularities at Brazilian longitudinal sector response to geomagnetic storms during post-sunset hours in solar cycle 23
Authors:	劉正彥;Sun, Y. Y.;Liu, J. Y.;Lin, C. H.
Contributors:	地球科學學院太空科學與工程學系
Keywords:	Atmospheric sciences;Earth sciences;Earth, ocean, space;Exact sciences and technology;Global positioning systems;GPS;Latitude;low latitude F-region irregularity;magnetic storm;Space;Storms;TEC phase fluctuation;Weather
Date:	2012-01-01
Issue Date:	2026-04-23 11:03:00 (UTC+8)
Publisher:	Wiley-Blackwell;Washington, DC: Blackwell Publishing Ltd
Abstract:	摘要： Effects of intense geomagnetic storms (Dst index < −100) to low latitude F region irregularities in the post‐sunset hours are statistically studied by the total electron content (TEC) phase fluctuation observations obtained from the ground‐based global positioning system (GPS) receivers in the Brazilian longitude sector during a 7.5‐year period of 1 April 1998–31 October 2005. Results show that the low latitude irregularities are significantly suppressed during the main and recovery phases of the intense geomagnetic storms in the months (September–March) that normally have high irregularity activity. In contrast, the post‐sunset triggering signatures are pronounced in the low irregularity activity season (April–August) during storms. To further understand the storm‐produced behaviors in the low latitude F region irregularity in the post‐sunset hours, the relationship between the intensity of GPS phase fluctuations and the occurrence time of the of IMF Bz turnings is examined and discussed. Key Points A statistical study of GPS phase fluctuations during magnetic storms The suppression of Fp in high irregularity activity seasons The triggering of Fp in low irregularity activity seasons 其他題名： J. Geophys. Res 出版者： Washington, DC: Blackwell Publishing Ltd 出版日期： 2012-03 出處： Journal of Geophysical Research Atmospheres, 2012-03, Vol.117 (A3), p.n/a 資源來源： Wiley Online Library - AutoHoldings Journals 版權： Copyright 2012 by the American Geophysical Union 版權： 2015 INIST-CNRS 識別號： ISSN: 0148-0227 識別號： ISSN: 2169-9380 識別號： ISSN: 2156-2202 識別號： EISSN: 2156-2202 識別號： EISSN: 2169-9402 識別號： DOI: 10.1029/2011JA017419
Appears in Collections:	[DEPARTMENT OF SPACE SCIENCE AND ENGINEERING] journal & Dissertation

Files in This Item:

File	Description	Size	Format
index.html		0Kb	HTML	20	View/Open

社群 sharing

Loading...