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

Birch, Martin John and Hargreaves, J. K. (2019) Relations between ripples in the high-latitude F-region, the geomagnetic field, and the solar wind. In: NAM MIST 2019, 1-4 July 2019, Lancaster University, United Kingdom.

Birch, Martin John and Hargreaves, J. K. (2018) Quasi-periodic fluctuations in the high-latitude electron content, the geomagnetic field, and the solar wind. In: RAS Autumn MIST, 29 November 2018, London, United Kingdom.

Birch, Martin John and Hargreaves, J. K. (2017) Related fine structures in the F and D regions observed with the EISCAT Svalbard incoherent-scatter radar. In: NAM MIST 2017, 3-6 July 2017, University of Hull, United Kingdom.

Birch, Martin John, Hargreaves, J. K. and Grocott, A. (2017) Observations of electron content and velocity fluctuations in the F-region at high latitude. In: RAS Autumn MIST, 25 November 2017, London, United Kingdom.

Birch, Martin John and Hargreaves, J. K. (2016) Deduction of a high-latitude, low-altitude absorption layer using the EISCAT Svalbard Radar. In: RAS Autumn MIST, 25 November 2016, London, United Kingdom.

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 and Hargreaves, J. K. (2014) Associations between night-side electron flux and day-side auroral radio absorption. In: EISCAT 2014, August 2014, University of Bath, Bath, United Kingdom.

Hargreaves, J. K., Birch, Martin John and Bromage, B. J. I. (2013) Magnetotail activity and medium-energy electron precipitation at high latitude. In: EISCAT 2013, August 2013, Lancaster University, United Kingdom.

Hargreaves, J. K. and Birch, Martin John (2012) Small-scale structure in trapped and precipitating medium-energy electrons in the noon sector. In: International HEPPA (High Energy Particle Precipitation in the Atmosphere) Meeting, 9-12 October 2012, Boulder, CO, USA.

Birch, Martin John and Hargreaves, J. K. (2012) Spatial fine-structure in trapped and precipitating medium-energy electrons in the noon sector. In: UK-Germany National Astronomy Meeting NAM2012, 27–30 March 2012, University of Manchester.

Hargreaves, J. K. and Birch, Martin John (2011) Relations between precipitating and trapped fluxes of medium-energy electrons in the noon sector. In: RAS Autumn Mist 2011, November 2011.

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., Birch, Martin John and Bromage, B. J. I. (2007) Observations of trapped and precipitating electrons in the auroral zone, and related effects in the ionospheric D-region. In: RAS Autumn Mist, 30 November 2007.

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.