The solar-terrestrial event of 23 February 1956

Advances in Space Research

Volumn 44, Issue 10, 2009, Pages 1096-1106

  Rishbeth, H ^a   Shea, M A ^b   Smart, D F ^b  

^a UNIVERSITY OF SOUTHAMPTON   (United Kingdom)

^b AIR FORCE RESEARCH LABORATORY   (United States)

Author keywords

23 February 1956; Ground level enhancements (GLE); Ionosphere; Personal reminiscences; Solar activity; Solar terrestrial events

Indexed keywords

IONOSPHERE; SOLAR ENERGY;

23 FEBRUARY 1956; GROUND LEVEL ENHANCEMENTS; PERSONAL REMINISCENCES; SOLAR ACTIVITY; SOLAR-TERRESTRIAL EVENTS;

GEOPHYSICS;

EID: 70349795701     PISSN: 02731177     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.asr.2009.06.020     Document Type: Article

References (49)

1. Adams N. A temporary increase in the neutron component of cosmic rays. Phil. Mag. 41 (1950) 503-505
2. Bailey D.K. Disturbances in the lower ionosphere observed at VHF following the solar flare of 23 February 1956 with particular reference to auroral-zone absorption. J. Geophys. Res. 62 (1957) 431-463
3. Bailey D.K. Abnormal ionization in the lower ionosphere associated with cosmic-ray flux enhancements. Proc. IRE 47 (1959) 255-266
4. Bailey D.K., and Pomerantz M.A. Relativistic electron precipitation into the mesosphere at subauroral latitudes. J. Geophys. Res. 70 (1965) 5823-5830
5. Belrose J.S., Devenport M.H., and Weekes K. Some unusual radio observations made on 23 February 1956. J. Atmos. Terr. Phys. 8 (1956) 281-286
6. Belov A., Eroshenko E., Mavromichalaki H., Plainaki C., and Yanke V. A study of the ground level enhancement of 23 February 1956. Adv. Space Res. 35 (2005) 697-701
7. Dagg M., Vice R.W., and Watkins C.D. Jodrell Bank observations of the geophysical phenomena following the solar flare of 1956 February 23. Jodrell Bank Annals 1 (1956) 104-115
8. Dellinger J.H. Sudden ionospheric disturbances. Terr. Magn. Atmos. Elect. 42 (1937) 49-53
9. Dorman, L.I. Cosmic Ray Variations, State Publishing House for Technical and Theoretical Literature, Moscow (Translated by Technical Documents Liaison Office, Wright-Patterson Air Force Base, Ohio, USA), 1957.
10. Ehmert A., and Revellio K. Solare ultrastrahlung und ionosphäerische D schicht am 23 Februar 1956 (On solar cosmic rays and the ionospheric D layer on 23 February 1956). Z. Geophys. 23 (1957) 113-134
11. Ellison M.A., Elliot H., Watkins C.D., Minnis C.M., and Weekes K. Relations between the sun and the ionosphere. Nature 179 (1957) 804-806
12. Ellison M.A., and Reid J.H. A long wave anomaly associated with the arrival of cosmic ray particles of solar origin on 23 February 1956. Decrease in 24 kHz field strength when SCR particles arrived in dark hemisphere. J. Atmos. Terr. Phys. 8 (1956) 291-293
13. Eryushchev N.N. On ionospheric effects of the large solar flare of 23 February 1956. Izvest. Krym. Astrofiz. Obs. 20 (1958) 3-11
14. Fenton A.G., McCracken K.G., Parsons N.R., and Trost P.A. Cosmic-ray increase observed at high southern latitudes on February 23, 1956. Nature 177 (1956) 1173-1174
15. Forbush S.E. Three unusual cosmic-ray increases possibly due to charged particles from the Sun. Phys. Rev. 70 (1946) 771-772
16. Forbush S.E., Stinchcomb T.B., and Schein M. The extraordinary increase of cosmic-ray intensity on November 19, 1949. Phys. Rev. 79 (1950) 501-504
17. Garriott O.K., da Rosa A.V., Davis M.J., and Villard Jr. O.G. Solar flare effects in the ionosphere. J. Geophys. Res. 72 (1967) 6099-6103
18. Gold T. Motions in the magnetosphere of the earth. J. Geophys. Res. 64 (1959) 1219-1224
19. Knecht R.W., and Davies K. Solar flare effects in the F region of the ionosphere. Nature 190 (1961) 797-798
20. Knecht R.W., and Davies K. Possible solar flare effects in the F region of the ionosphere. Nature 192 (1961) 348
21. Lied F. Ionospheric absorption observed on the 23rd February 1956 at Kjeller and Tromsø. J. Atmos. Terr. Phys. 10 (1957) 48
22. Little C.G., and Leinbach H. Some measurements of high-latitude ionospheric absorption using extraterrestrial radio waves. Proc. IRE 46 (1958) 334-349
23. Lockwood J.A., Yingst H.E., Calawa A.R., and Sarmaniote G. Cosmic-Ray neutron intensity increase associated with solar flare of February 23, 1956. Phys. Rev. 103 (1956) 247-248
24. Lovell J.L., Duldig M.L., and Humble J.E. An extended analysis of the September 1989 cosmic ray ground level enhancement. J. Geophys. Res. 103 (1998) 23733-23742
25. Manning L.A. Bibliography of the ionosphere, 1925-1960 (1960), Stanford Electronics Laboratory, Stanford University, California
26. Mayaud, P.N. A Hundred Year Series of Geomagnetic Data 1868-1967, IAGA Bulletin No. 33, IUGG Publications Office, Paris, 1973.
27. Meyer P., Parker E.N., and Simpson J.A. Solar cosmic rays of February, 1956 and their propagation through interplanetary space. Phys. Rev. 104 1 (1956) 768-783
28. Minnis C.M., and Bazzard G.H. Solar effects in the F2 layer of the ionosphere. Nature 181 (1958) 690-691
29. McCracken K.G. The cosmic-ray flare effect. 1. Some new methods of analysis. J. Geophys. Res. 67 (1962) 423-434
30. McCracken K.G. The cosmic-ray flare effect. 2. The flare effects of May 4, November 12, and November 15, 1960. J. Geophys. Res. 67 (1962) 435-446
31. McCracken, K.G., Rao, U.R., Fowler, B.C., Shea, M.A., Smart, D.F. Cosmic Ray Tables (Asymptotic Directions, Variational Coefficients and Cut-off Rigidities), IQSY Instruction Manual No. 10, May 1965.
32. McCracken K.G., Moraal H., and Stoker P.H. Investigation of the multiple-component structure of the 20 January 2005 cosmic-ray ground level enhancement. J. Geophys. Res. (2008) 113
33. Munro G.H. Possible solar flare effects in the F region of the ionosphere. Nature 192 (1961) 347
34. Neidig Donald.F., and Cliver Edward.W. A catalog of solar white-light flares (1859-1982), including their statistical properties and associated emissions, AFGL-TR-83-0257 (1983), Air Force Geophysics Laboratory, Bedford, MA
35. Notuki M., Hatanaka T., and Unno W. A very unusual flare on February 23, 1956. Publ. Astron. Soc. Jpn. 8 (1956) 52
36. Pfotzer G. On the separation of direct and indirect fractions of solar cosmic radiation on February 23, 1956 and on the difference in steepness of momentum spectrum of these two components. Nuovo Cimento 8 Suppl. (1958) 180-187
37. Pierce J.A. VLF phase shifts associated with the disturbance of February 23, 1956. J. Geophys. Res. 61 (1956) 475-483
38. Waldmeier, M. (Ed.). Quarterly Bulletin on Solar Activity. Eidgenössische Sternwarte, Zürich, November 1956.
39. Ramanathan K.R., Bhonsle R.V., Kotadia K.M., and Rastogi R.G. The great solar flare of Feb. 23, 1956 and associated ionospheric effects at Ahmedabad. Proc. Indian Acad. Sci. 43 (1956) 306-308
40. Rishbeth H. The centenary of solar-terrestrial physics. J. Atmos. Solar-Terr. Phys. 63 (2001) 1883-1890
41. Shea M.A., and Smart D.F. Fifty years of cosmic radiation data. Space Sci. Rev. 93 (2000) 229-262
42. Shea, M.A., Smart, D.F. Vertical cutoff rigidities for cosmic ray stations since 1955. In: 27th International Cosmic Ray Conference, Contributed Papers, vol. 10, pp. 4063-4066, 2001.
43. Shea, M.A., Smart, D.F., Wada, M., Inoue, A. A suggested standardized format for cosmic ray ground-level event data. In: 19th International Cosmic Ray Conference, Conference Papers, vol. 5, pp. 510-513, 1985.
44. Shea, M.A., Smart, D.F., Humble, J.E., Flückiger, E.O., Gentile, L.C., Nichol, M.R. A Revised Standard Format for cosmic ray ground-level event data. In: 20th International Cosmic Ray Conference, Conference Papers, vol. 3, pp. 171-174, 1987.
45. In: Simpson J.A. (Ed). Cosmic-Radiation Neutron Intensity Monitor, Annals IGY, IV (1957), Pergamon Press, London 351
46. Smart, D.F., Shea, M.A. Probable pitch angle distribution and spectra of the 23 February 1956 solar cosmic ray event. In: 21st International Cosmic Ray Conference, Conference Papers, vol. 5, pp. 257-260, 1990.
47. Storini, M., Giangrave, S., Diego, P., Laurenza, M., More on the Gnevyshev Gap during the 11-year solar activity cycle. In: Caballero, R., D'Olivo, J.C., Medina-Tanco, G., et al. (Eds.), Proceedings of the 30th International Cosmic Ray Conference, Universidad Nacional Autónoma de México, Mexico City, pp. 533-536, 2008.
48. Švestka Z., and Simon P. Catalog of solar particle events 1955-1969. Astrophysics and Space Science Library vol. 49 (1975), D. Reidel Publishing Company, Dordrecht, The Netherlands
49. Vashenyuk E.V., Balabin Yu.V., and Miroshnichenko L.I. Relativistic solar protons in the ground level event of 23 February 1956: new study. Adv. Space Res. 41 (2008) 926-935