World Library  

Add to Book Shelf
Flag as Inappropriate
Email this Book

The Statistical Properties of Spread F Observed at Hainan Station During the Declining Period of the 23Rd Solar Cycle : Volume 28, Issue 6 (10/06/2010)

By Wang, G. J.

Click here to view

Book Id: WPLBN0003984135
Format Type: PDF Article :
File Size: Pages 9
Reproduction Date: 2015

Title: The Statistical Properties of Spread F Observed at Hainan Station During the Declining Period of the 23Rd Solar Cycle : Volume 28, Issue 6 (10/06/2010)  
Author: Wang, G. J.
Volume: Vol. 28, Issue 6
Language: English
Subject: Science, Annales, Geophysicae
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


APA MLA Chicago

Wang, X., Pirog, O. M., Shang, S. P., Shi, J. K., Wang, G. J., & Zherebtsov, G. (2010). The Statistical Properties of Spread F Observed at Hainan Station During the Declining Period of the 23Rd Solar Cycle : Volume 28, Issue 6 (10/06/2010). Retrieved from

Description: State Key Laboratory of Space Weather, Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190, China. The temporal variations of the low latitude nighttime spread F (SF) observed by DPS-4 digisonde at low latitude Hainan station (geog. 19.5° N, 109.1° E, dip lat. 9.5° N) during the declining solar cycle 23 from March 2002 to February 2008 are studied. The spread F measured by the digisonde were classified into four types, i.e., frequency SF (FSF), range SF (RSF), mixed SF (MSF), and strong range SF (SSF). The statistical results show that MSF and SSF are the outstanding irregularities in Hainan, MSF mainly occurs during summer and low solar activity years, whereas SSF mainly occurs during equinoxes and high solar activity years. The SSF has a diurnal peak before midnight and usually appears during 20:00–02:00 LT, whereas MSF peaks nearly or after midnight and occurs during 22:00–06:00 LT. The time of maximum occurrence of SSF is later in summer than in equinoxes and this time delay can be caused by the later reversal time of the E×B drift in summer. The SunSpot Number (SSN) dependence of each type SF is different during different season. The FSF is independent of SSN during each season; RSF with SSN is positive relation during equinoxes and summer and is no relationship during the winter; MSF is significant dependence on SSN during the summer and winter, and does not relate to SSN during the equinoxes; SSF is clearly increasing with SSN during equinoxes and summer, while it is independent of SSN during the winter. The occurrence numbers of each type SF and total SF have the same trend, i.e., increasing as Kp increases from 0 to 1, and then decreasing as increasing Kp. The correlation with Kp is negative for RSF, MSF, SSF and total SF, but is vague for the FSF.

The statistical properties of spread F observed at Hainan station during the declining period of the 23rd solar cycle

Aarons, J.: The longitudinal morphology of equatorial F layer irregularities relevant to their occurrence, Space Sci. Rev., 63, 209–243, 1993.; Abdu, M. A., Bittencourt, J. A., and Batista, I. S.: Magnetic declination control of the equatorial F-region dynamo electric field development and spread-F, J. Geophys. Res., 86, 11443–11446, 1981.; Abdu, M. A., Medeiros, R. T. , Sobral, J. H. A., and Bittencourt, J. A.: Spread F plasma vertical rise velocities determined from spaced ionosonde observations, J. Geophys. Res., 88, 9197–9204, 1983a.; Abdu, M. A., Medeiros, R. T., and Nakamura, Y.: Latitudinal and magnetic flux tube extension of the equatorial spread F irregularities, J. Ceophys. Res., 88, 4861–4868, 1983b.; Abdu, M. A., Sobral, J. H. A., Nelson, O. R., and Batista, I. S.: Solar cycle related range type spread-F occurrence characteristics over equatorial and low latitude stations in Brazil, J. Atmos. Terr. Phys., 47, 901–905, 1985.; Abdu, M. A., Batista, I. S., and Sobral, J. H. A.: A new aspect of magnetic declination control on equatorial spread-F and F-region dynamo, J. Geophys. Res., 97, 14897–14904, 1992.; Abdu, M. A.,Maruyama, T., Batista, I. S., Saito, S., and Nakamura, M.: Ionospheric responses to the October 2003 superstorm: Longitude/local time effects over equatorial low and middle latitudes, J. Geophys. Res., 112, A10306, doi:10.1029/2006JA012228, 2007.; Argo, P. E. and Kelley, M. C.: Digital ionosonde observations during equatorial spread F, J. Geophys. Res., 91, 5539–5555, 1986.; Basu, Su. and Basu, S.: Equatorial scintillations: progress since ISEA-6, J. Atmos. Terr. Phys., 47, 753–768, 1985.; Rastogi, R. G.: Seasonal variation of equatorial spread F in the American and Indian zones, J. Geophys. Res., 85, 722–726, 1980.; Becker-Guedes, F., Sahai, Y., Fagundes, P. R., Lima, W. L. C., Pillat, V. G., Abalde, J. R., and Bittencourt, J. A.: Geomagnetic storm and equatorial spread-F, Ann. Geophys., 22, 3231–3239, 2004.; Bhaneja, P., Earle, G. D., Bishop, R. L., Bullett, T. W., Mabie, J., and Redmon, R.: A statistical study of midlatitude spread F at Wallops Island, Virginia, J. Geophys. Res., 114, A04301, doi:10.1029/2008JA013212, 2009.; Booker, H. G. and Wells, H. W.: Scattering of radio waves in the F-region of the ionosphere, Terr. Magn. Atmos. Electr., 43, 249–256, 1938.; Bowman, G. G.: Short-term delays in ionogram-recorded equatorial spread F occurrence of equatorial spread F, Ann. Geophys., 11, 624–633, 1995.; Bowman, G. G.: Short-term delays (hours) of ionospheric spread F occurrence at a range of latitudes, following geomagnetic activity, J. Geophys. Res., 103, 11627–11634, 1998.; Bowman, G. G. and Mortimer, I. K.: Ionogram-recorded equatorial spread-F and height changes at Huancayo during sunspot-maximum years, J. Geophys. Res., 113, A01315, doi:10.1029/2006JA011881, 2008.; Chandra, H.: Equatorial spread-F- recent developments, Ind. J. Radio Space Phys., 19, 215–224, 1990.; Chandra, H. and Rastogi, R. G.: Equatorial spread-F over a solar cycle, Ann. Geophys., 28, 709–716, 1972.; Chandra, H., Sharma, S., Abdu, M. A., and Batista, I. S.: Spread-F at anomaly crest regions in the Indian and American longituedes, Adv. Space Res., 31, 717–727, 2003.; Chen, W. S., Lee, C. C., Liu, J. Y., Chu, F. D., and Reinisch, B. W.: Digisonde spread F and GPS phase fluctuations in the equatorial ionosphere during solar maximum, J. Geophys. Res., 111, A12305, doi:10.1029/2006JA011688, 2006.; Cohen, R. and Bowles, H. W.: On the nature of equatorial spread F, J. Geophys. Res., 66, 1081–1106, 1961.; Cragin, B. L., Valladares, C. E., Hanson, W. B., and McClure, J. P.: Bottomside sinusoidal irregularities in the equatorial F region, 2, cross-correlation and spectral analysis, J. Geophys. Res., 90, 1721–1734, 1985.; DasGupta, A., Aarons, J., Klobuchar, J. A., Basu, S., and Bushby, A.: Ionospheric electron content depletions associated with amplitude scintillations in the equatorial region, Geophys. Res. Letts.


Click To View

Additional Books

  • Survey of Cold Ionospheric Outflows in t... (by )
  • Tec Variations During Low Solar Activity... (by )
  • Relativistic Electron Dropouts by Pitch ... (by )
  • Locating the Solar Source of 13 April 20... (by )
  • Planar Charged-particle Trajectories in ... (by )
  • Relative O- and X-mode Transmitted Power... (by )
  • The Role of Bromine and Chlorine Chemist... (by )
  • The Beneficial Role of Rubble Mound Coas... (by )
  • Low-frequency Electrostatic Waves in the... (by )
  • PrefaceAtmospheric Studies by Optical Me... (by )
Scroll Left
Scroll Right


Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Fair are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.