Items where Author is "Hargreaves, J. K."

Journal Article

Hargreaves, J. K. and Birch, M. J. and Bromage, B. J. I. (2007) D- and E-region effects in the auroral zone during a moderately active 24-h period in July 2005. Annales Geophysicae, 25 (8). pp. 1837-1849. ISSN 0992-7689

Hargreaves, J. K. (2007) Seasonal variations in the incidence of auroral radio absorption events at very high latitude, and the influence of the magnetotail. Annales Geophysicae, 25 (3). pp. 711-720. ISSN 0992-7689

Hargreaves, J. K. and Birch, M. J. (2005) On the relations between proton influx and D-region electron densities during the polar-cap absorption event of 28-29 October 2003. Annales Geophysicae, 23 (10). pp. 3267-3276. ISSN 0992-7689

Birch, M. J. and Hargreaves, J. K. and Senior, Andrew and Bromage, B. J. I. (2005) Variations in cutoff latitude during selected solar energetic proton events. Journal of Geophysical Research, 110 (A7). A07221. ISSN 0148-0227

Hargreaves, J. K. (2005) A new method of studying the relation between ionization rates and radio-wave absorption in polar-cap absorption events. Annales Geophysicae, 23 (2). pp. 359-369. ISSN 0992-7689

Hargreaves, J. K. and Friedrich, M. (2003) The estimation of D-region electron densities from riometer data. Annales Geophysicae, 21 (2). pp. 603-613. ISSN 0992-7689

Birch, M. J. and Hargreaves, J. K. and Bailey, G. J. (2002) On the use of an effective ionospheric height in electron content measurement by GPS reception. Radio Science, 37 (1). 15/1-15/19. ISSN 0048-6604

Hargreaves, J. K. and Detrick, D. L. (2002) Application of polar cap absorption events to the calibration of riometer systems. Radio Science, 37 (3). 7/1-7/11. ISSN 0048-6604

Ranta, H. and Ranta, A. and Hargreaves, J. K. (1999) Small-scale structure of ionospheric absorption of cosmic noise during pre-onset and sharp onset phases of an auroral substorm. Geophysica, 35 (1-2). pp. 45-57. ISSN 0367-4231

Hargreaves, J. K. (1998) Comments on protonospheric content - ATS-6 revisited. Acta Geodaetica et Geophysica Hungarica, 33 (1). pp. 129-135. ISSN 1217-8977

Hargreaves, J. K. and Burns, C. J. (1996) Electron content measurements in the auroral zone using GPS : preliminary observations of the main trough and a survey of the degree of irregularity in summer. Journal of Atmospheric and Terrestrial Physics, 58 (13). pp. 1449-1457.

Burns, C. J. and Hargreaves, J. K. (1996) The occurrence and properties of large-scale electron-density structures in the auroral F region. Journal of Atmospheric and Terrestrial Physics, 58 (1-4). pp. 217-232.

Browne, S. and Hargreaves, J. K. and Honary, B. (1995) An imaging riometer for ionospheric studies. Electronics and Communication Engineering Journal, 7 (5). pp. 209-217. ISSN 0954-0695

Hargreaves, J. K. and Rosenberg, T. J. and Detrick, D. L. (1994) Dynamics of auroral precipitation in the morning sector observed with the imaging riometer at South Pole station: evidence of co-rotating precipitation regions. Journal of Atmospheric and Terrestrial Physics, 56 (6). pp. 783-793.

Hargreaves, J. K. and Shirochkov, A. V. and Farmer, A. D. (1993) The polar cap absorption event of 19–21 March 1990: recombination coefficients, the twilight transition and the midday recovery. Journal of Atmospheric and Terrestrial Physics, 55 (6). pp. 857-862.

del Pozo, C. F. and Bunrs, C. J. and Hargreaves, J. K. (1993) Dual-beam EISCAT radar observations of the dynamics of the disturbed D- and E-regions in the early morning sector. Journal of Atmospheric and Terrestrial Physics, 55 (10). pp. 1393-1415.

Contribution in Book/Report/Proceedings

Burns, C. J. and Hargreaves, J. K. (1994) The occurrence and properties of large-scale irregular structures in the auroral F region. In: Proceedings of an international beacon satellite symposium :. UNSPECIFIED.

Hargreaves, J. K. and Burns, C. J. (1994) Investigation of the auroral ionosphere by GPS reception. In: Proceedings of the international beacon satellite symposium :. UNSPECIFIED, Aberystwyth.

Monograph

Hargreaves, J. K. and Burns, C. J. (1994) Effects of the ionosphere on the performance of space-based radar at high altitude. Working Paper. Lancaster University.