TY - JOUR
T1 - The low latitude ionospheric effects of the April 2000 magnetic storm near the longitude 120°E
AU - Liu, Libo
AU - Wan, Weixing
AU - Ning, Baiqi
AU - Lee, C. C.
AU - Liu, J. Y.
N1 - Funding Information:
Acknowledgments. The authors thank Dr. Toyo Kamei of WDC-C2 provides the Dst, ap and AE indexes data. The Kokubunji ionospheric data are provided from WDC for Ionosphere, CRL of Japan. LBL would like to express especial thanks to Dr. L. Scherliess of Utah State University and Dr. E. A. Araujo-Pradere of University of Colorado for providing their codes. This research is supported by Natural Science Foundation of China (40274054, 40134020) and National Important Basic Research Project (G2000078407).
PY - 2004/8/1
Y1 - 2004/8/1
N2 - In this paper, we report the responses of the low latitude ionosphere near the longitude 120°E to the April 2000 geomagnetic storm using Digisonde data measured at Chungli (25.0°N, 121.2°E, Mag. 13.8°N), Wuhan (30.6°N, 114.4°E, Mag. 19.3°N), and Kokubunji (35.7°N, 139.5°E, Mag. 25.7°N). At these three stations, the significant ionospheric responses are near-simultaneous height disturbances after the sudden storm commencement (SSC) on April 6, 2000 and wave-like disturbances in the daytime on April 7. The ionospheric height disturbances in the nighttime after the SSC at these stations are suggested to be caused by the storm related perturbed electric fields, and the followed wave-like disturbances may be caused by storm induced atmospheric gravity waves. The vertical effective winds derived from Digisonde measurements imply the existence of significantly large vertical drifts during this storm, which are in agreement with the perturbed zonal electric fields predicted by the model of Fejer and Scherliess (1997) and Scherliess and Fejer (1997). Finally, the storm time derivations of foF2 from its monthly median level at these stations are used to validate the predication ability of the empirical model of Araujo-Pradere et al. (2002), which has included in the International Reference Ionosphere model IRI2000. Key words: Geomagnetic storm, ionospheric storm, F-layer, low latitude, perturbed electric field, International Reference Ionosphere.
AB - In this paper, we report the responses of the low latitude ionosphere near the longitude 120°E to the April 2000 geomagnetic storm using Digisonde data measured at Chungli (25.0°N, 121.2°E, Mag. 13.8°N), Wuhan (30.6°N, 114.4°E, Mag. 19.3°N), and Kokubunji (35.7°N, 139.5°E, Mag. 25.7°N). At these three stations, the significant ionospheric responses are near-simultaneous height disturbances after the sudden storm commencement (SSC) on April 6, 2000 and wave-like disturbances in the daytime on April 7. The ionospheric height disturbances in the nighttime after the SSC at these stations are suggested to be caused by the storm related perturbed electric fields, and the followed wave-like disturbances may be caused by storm induced atmospheric gravity waves. The vertical effective winds derived from Digisonde measurements imply the existence of significantly large vertical drifts during this storm, which are in agreement with the perturbed zonal electric fields predicted by the model of Fejer and Scherliess (1997) and Scherliess and Fejer (1997). Finally, the storm time derivations of foF2 from its monthly median level at these stations are used to validate the predication ability of the empirical model of Araujo-Pradere et al. (2002), which has included in the International Reference Ionosphere model IRI2000. Key words: Geomagnetic storm, ionospheric storm, F-layer, low latitude, perturbed electric field, International Reference Ionosphere.
UR - http://www.scopus.com/inward/record.url?scp=18744399344&partnerID=8YFLogxK
U2 - 10.1186/BF03352521
DO - 10.1186/BF03352521
M3 - 期刊論文
AN - SCOPUS:18744399344
SN - 1343-8832
VL - 56
SP - 607
EP - 612
JO - Earth, Planets and Space
JF - Earth, Planets and Space
IS - 6
ER -