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

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Hargreaves, J. K., Birch, Martin John and Evans, D. S. (2014) Variability and spatial fine structure of precipitating and trapped medium‐energy electron fluxes in the noon sector. Journal of Geophysical Research: Space Physics, 119 (2). pp. 1102-1120. ISSN 2169-9380

Birch, Martin John, Hargreaves, J. K. and Bromage, B. J. I. (2011) Dynamic behaviour of patches of auroral radio absorption observed by imaging riometer and incoherent scatter radar. In: AGU Chapman Conference, March 2011, Fairbanks, Alaska.

Hargreaves, J. K., Birch, Martin John and Evans, D. S. (2010) On the fine structure of medium energy electron fluxes in the auroral zone and related effects in the ionospheric D-region. Annales Geophysicae (ANGEO), 28 (5). pp. 1107-1120. ISSN 0992-7689

Hargreaves, J. K., Birch, Martin John and Bromage, B. J. I. (2010) The drift of auroral radio absorption patches observed by imaging riometer. In: National Astronomy Meeting, 31 March-4 April 2010, Glasgow University, Glasgow, Scotland.

Hargreaves, J. K., Birch, Martin John and Bromage, B. J. I. (2009) Observations of trapped and precipitating electrons in the auroral zone, and related effects in the ionospheric D‐region. In: HEPPA (High Energy Particle Precipitation in the Atmosphere) Meeting, 2009, Boulder, CO, USA.

Birch, Martin John, Hargreaves, J. K., Bromage, B. J. I. and Evans, D. S. (2008) On the relation between >30 keV auroral electron flux and 38.2 MHz radiowave absorption at very high latitude. In: National Astronomy Meeting, April 2008, Queens University, Belfast.

Bromage, B. J. I., Birch, Martin John and Hargreaves, J. K. (2007) Observations of a geomagnetic substorm and the coronal hole which initiated the activity. In: High Speed Streams and Geospace Interactions, 2-7 September 2007, Ambleside, United Kingdom.

Hargreaves, J. K., Birch, Martin John 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

Birch, Martin John, Hargreaves, J. K., Senior, A. and Bromage, B. J. I. (2007) Correlation of ring current indices with invariant latitude cutoff for three SEP events from 2001. In: National Astronomy Meeting (NAM) 2007, 16-20 April 2007, University of Central Lancashire, Preston, United Kingdom.

Hargreaves, J. K. and Birch, Martin John (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, Martin John, Hargreaves, J. K., Bromage, B. J. I. and Senior, A. (2004) Three proton events in 2001. In: Conference on Sun-Earth Connections, 9 February 2004, Kona, Hawaii.

Birch, Martin John, Hargreaves, J. K., Senior, A. and Bromage, B. J. I. (2003) Variations of Cutoff Latitude for Selected Solar Energetic Proton Events. In: EGS-AGU-EUG Joint Assembly,, 6-11 April 2003, Nice, France.

Birch, Martin John, 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

Birch, Martin John and Hargreaves, J. K. (1999) Investigation of Earth's Ionosphere using the Global Positioning System. In: 1999 Spring MIST, 31 March-2 April 1999, Cumbria, England.

Birch, Martin John and Hargreaves, J. K. (1998) Estimation of GPS Satellite Biases by Comparing Slant and Zenithal Observations. In: 1998 Spring MIST, 31 March-2 April 1998, St. Edmund's Hall, Oxford.

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