Traveling wave packets of total electron content disturbances as deduced from global GPS network data

We identi3ed a speci3c class of mid-latitude medium-scale traveling ionospheric disturbances (MSTIDs), namely traveling wave packets (TWPs) of total electron content (TEC) disturbances. For the 3rst time, we present the TWP morphology for 105 days 1998–2001. A total number of the TEC series, with a duration of each series of about 2:3 h (2h 18m), exceeded 700,000. The data were obtained using the technology GLOBDET of global detection of ionospheric disturbances using a global network of GPS receivers, and the technique of GPS interferometry of TIDs, developed at the ISTP SD RAS. It was found that TWPs are observed no more than in 0.1– 0.4% of all TEC series, most commonly during the daytime in winter and autumn. TWPs are quasi-periodic oscillations of TEC with a period of around 10 –20 min, and a time duration of the order of 1 h. The TWP amplitudes exceed the amplitudes of “background” TEC Cuctuations by one order of magnitude, as a minimum. The radius of spatial correlation of TWPs does not exceed 500 –600 km (3–5 wavelengths). We carried out a detailed analysis of the spatial–temporal properties of TWPs by considering an example of the most conspicuous manifestation of TWPs on October 18, 2001 over California, USA. The velocity and direction of TWP displacement correspond to those of mid-latitude MSTIDs. c

[1]  T. Jones,et al.  Source regions of medium scale travelling ionospheric disturbances observed at mid-latitudes , 1987 .

[2]  J. Klobuchar.  Ionospheric Time-Delay Algorithm for Single-Frequency GPS Users , 1987, IEEE Transactions on Aerospace and Electronic Systems.

[3]  P. V. Velthoven,et al.  Simultaneous observations of travelling ionospheric disturbances by two-dimensional radio interferometry and the differential Doppler technique applied to satellite signals , 1990 .

[4]  K. Davies,et al.  Pulsations in total columnar electron content , 1981 .

[5]  Samuel H. Francis,et al.  A theory of medium‐scale traveling ionospheric disturbances , 1974 .

[6]  V. Somsikov.  On mechanisms for the formation of atmospheric irregularities in the solar terminator region , 1995 .

[7]  S. Fukao,et al.  A climatology of F region gravity wave propagation over the middle and upper atmosphere radar , 1997 .

[8]  C. Hines.  INTERNAL ATMOSPHERIC GRAVITY WAVES AT IONOSPHERIC HEIGHTS , 1960 .

[9]  K. Hocke,et al.  A review of atmospheric gravity waves and travelling ionospheric disturbances: 1982-1995 , 1996 .

[10]  Tadahiko Ogawa,et al.  Imaging observations of the equatorward limit of midlatitude traveling ionospheric disturbances , 2002 .

[11]  K. Davies,et al.  F2-REGION ACOUSTIC WAVES FROM SEVERE WEATHER. , 1969 .

[12]  I. I. Ushakov,et al.  Geomagnetic storms and the occurrence of phase slips in the reception of GPS signals , 2002 .

[13]  J. Testud,et al.  Medium scale gravity waves in the ionospheric F-region and their possible origin in weather disturbances , 1975 .

[14]  Susan Skone,et al.  The impact of geomagnetic substorms on GPS receiver performance , 2000 .

[15]  T. Spoelstra.  Combining TID observations: NNSS and radio interferometry data , 1992 .

[16]  B. Ganguly,et al.  On the formation of atmospheric inhomogeneities in the solar terminator region , 1995 .

[17]  Takuya Tsugawa,et al.  A new technique for mapping of total electron content using GPS network in Japan , 2002 .

[18]  E. Afraimovich,et al.  Dynamics and anisotropy of traveling ionospheric disturbances as deduced from transionospheric sounding data , 1999 .

[19]  L. Kersley,et al.  The meteorological jet stream as a source of medium scale gravity waves in the thermosphere: an experimental study , 1978 .

[20]  H. Rishbeth,et al.  Relationship between simultaneous geomagnetic and ionspheric oscillations , 1964 .

[21]  T. Jones,et al.  HF Doppler observations of medium-scale travelling ionospheric disturbances at mid-latitudes , 1986 .

[22]  T. Jones,et al.  The effects of neutral winds on the propagation of medium-scale atmospheric gravity waves at mid-latitudes , 1984 .

[23]  C. Mercier.  Observations of atmospheric gravity waves by radiointerferometry , 1986 .

[24]  J. Dudeney,et al.  The accuracy of simple methods for determining the height of the maximum electron concentration of the F2-layer from scaled ionospheric characteristics , 1983 .

[25]  A. Jacobson,et al.  A study of apparent ionospheric motions associated with multiple traveling ionospheric disturbances , 1991 .

[26]  L. Uccellini,et al.  A Case Study of Gravity Waves–Convective Storms Interaction: 9 May 1979 , 1983 .

[27]  E. Afraimovich,et al.  Statistical Angle-of-arrival and Doppler Method for GPS radio interferometry of TIDs , 2000 .

[28]  H. Duffus,et al.  THE ASSOCIATION BETWEEN ULF GEOMAGNETIC FLUCTUATIONS AND DOPPLER IONOSPHERIC OBSERVATIONS , 1968 .

[29]  Anthony J. Mannucci,et al.  A global mapping technique for GPS‐derived ionospheric total electron content measurements , 1998 .

[30]  V. Vodyannikov,et al.  AN EXPERIMENTAL STUDY OF WAVE PACKETS IN TRAVELLING IONOSPHERIC DISTURBANCES , 1999 .

[31]  Takeshi Sakanoi,et al.  Traveling ionospheric disturbances detected in the FRONT Campaign , 2001 .

[32]  S. Shan,et al.  GPS phase fluctuations observed along the American sector during low irregularity activity months of 1997–2000 , 2002 .

[33]  S. Skone,et al.  Limitations in GPS receiver tracking performance under ionospheric scintillation conditions , 2001 .

[34]  Geomagnetic Control of the Spectrum of Traveling Ionospheric Disturbances Based on Data from a Global GPS Network , 2001 .

[35]  S. Fukao,et al.  Observations of traveling ionospheric disturbances and 3-m scale irregularities in the nighttime F-region ionosphere with the MU radar and a GPS network , 2002 .

[36]  K. Davies,et al.  Ionospheric radio waves , 1969 .

[37]  Yu. V. Lipko,et al.  Transequatorial propagation of the Pc1 emission on 23 October 1997 , 2002 .

[38]  A. V. Volgin,et al.  Doppler sounding as a tool for the study of the MHD wave structure in the magnetosphere , 1991 .

[39]  L. Kersley,et al.  Tropospheric gravity waves and their possible association with medium-scale travelling ionospheric disturbances , 1982 .

[40]  A. D. Kalikhman.  Medium-scale travelling ionospheric disturbances and thermospheric winds in the F-region , 1980 .

[41]  B. Hofmann-Wellenhof,et al.  Global Positioning System , 1992 .

[42]  Edward L. Afraimovich,et al.  GPS radio interferometry of travelling ionospheric disturbances , 1998 .

[43]  K. Davies,et al.  Three-dimensional observations of traveling ionospheric disturbances , 1971 .

[44]  J. Röttger,et al.  Simultaneous geomagnetic and ionospheric oscillations caused by hydromagnetic waves , 1976 .

[45]  R. Hung,et al.  Observation of gravity waves during the extreme tornado outbreak of 3 April 1974 , 1978 .

[46]  E. Afraimovich,et al.  Refraction distortions of transionospheric radio signais caused by changes in a regular ionosphere and by travelling ionospheric disturbances , 1992 .

[47]  Guanghui Wu,et al.  Observations of traveling ionospheric disturbances with a satellite-beacon radio interferometer : seasonal and local time behavior , 1995 .

[48]  L. A. Leonovich,et al.  Determining parameters of large-scale traveling ionospheric disturbances of auroral origin using GPS-arrays , 2000 .

[49]  K. Davies,et al.  Short-period fluctuations in total columnar electron content. [in ATS 6 radio beacon experiment] , 1976 .

[50]  E. L. Afraimovich,et al.  GPS global detection of the ionospheric response to solar flares , 2000, physics/0007026.

[51]  C. Hines,et al.  On the propagation of atmospheric gravity waves through regions of wind shear , 1967 .

[52]  C. Mercier.  Some characteristics of atmospheric gravity waves observed by radio-interferometry , 1996 .

[53]  K. Cheng,et al.  On the detection of acoustic‐gravity waves generated by typhoon by use of real time HF Doppler frequency shift sounding system , 1985 .