全部文献期刊会议图书|学者科研项目
中外文文献  中文文献  外文文献
作者:... E. Donovan , J. Liang , E. Spanswick
来源:[J].Annales Geophysicae(IF 1.518), 2017, Vol.35, pp.217-225
摘要:Previous studies of the motion of patches that comprise patchy pulsating aurora (PPA) have been based on a limited number of events. In this study, we use a large database of PPA patches obtained from the THEMIS all-sky imager at Gillam (66.18° magnetic latitude, 332.78° mag...
作者:... D.K. Milling , E.F. Donovan , E. Spanswick
来源:[J].Planetary and Space Science(IF 2.109), 2006, Vol.55 (6), pp.701-713
摘要:Abstract(#br)We present multi-instrument observations of ultra low frequency (ULF) wave activity from the dawn flank magnetosphere during the period 12:00–13:30 UT on the 16 December 2003. Optical, magnetic and riometer measurements from the Churchill line meridian in the Ca...
作者:E. Spanswick , M. Lester ...
来源:[J].Advances in Space Research(IF 1.183), 2006, Vol.40 (3), pp.409-418
摘要:Abstract(#br)The overarching objective of the ILWS Geospace program is to facilitate system level science. This demands synoptic observations such as global auroral imaging. At present, there is no funded mission during ILWS that incorporates a global auroral imager. The imaging ...
作者:E. Spanswick , E. Donovan ...
来源:[J].Annales Geophysicae(IF 1.518), 2009, Vol.27 (5), pp.2019
摘要:We present riometer and in situ observations of a substorm electron injection on 27 August 2001. The event is seen at more than 20 separate locations (including ground stations and 6 satellites: Cluster, Polar, Chandra, and 3 Los Alamos National Laboratory (LANL) spacecraft). The...
作者:E. Spanswick , E. Donovan , G. Baker
来源:[J].Annales Geophysicae(IF 1.518), 2005, Vol.23 (5), pp.1533
摘要:Using the NORSTAR riometer and CANOPUS magnetometer arrays we have investigated the modulation of high energy electron precipitation by ULF waves in the Pc5 frequency band. We conducted two separate studies of Pc5 activity in the riometers. The first is an independent survey...
作者:E. Spanswick , E. Donovan , G. Baker
来源:[J].Annales Geophysicae(IF 1.518), 2005, Vol.23 (5), pp.1533-1542
摘要:Using the NORSTAR riometer and CANOPUS magnetometer arrays we have investigated the modulation of high energy electron precipitation by ULF waves in the Pc5 frequency band. We conducted two separate studies of Pc5 activity in the riometers. The first is an independent survey...
作者:E. Spanswick , E. Donovan , G. Baker
来源:[J].Annales Geophysicae(IF 1.518), 2005, Vol.23, pp.1533-1542
摘要:Using the NORSTAR riometer and CANOPUS magnetometer arrays we have investigated the modulation of high energy electron precipitation by ULF waves in the Pc5 frequency band. We conducted two separate studies of Pc5 activity in the riometers. The first is an independent survey...
作者:... E. Donovan , E. Spanswick , J.-P. St.-Maurice
来源:[J].Annales Geophysicae(IF 1.518), 2010, Vol.28 (6), pp.1307
摘要:High-latitude irregularities can impair the operation of GPS-based devices by causing fluctuations of GPS signal amplitude and phase, also known as scintillation. Severe scintillation events lead to losses of phase lock, which result in cycle slips. We have used data from the Can...
作者:... A. J. Kavanagh , E. Spanswick , A. Viljanen
来源:[J].Annales Geophysicae(IF 1.518), 2006, Vol.24 (7), pp.1887
摘要:Sudden increases in cosmic radio noise absorption, known as spike events, have been identified as signatures of substorms in the previous studies. Using data from the IRIS (Imaging Riometer for Ionospheric Studies) at Kilpisjärvi, Finland (L~6) more than 450 night-time spike...
作者:... E. Donovan , E. Spanswick , K. Liou
来源:[J].Annales Geophysicae(IF 1.518), 2006, Vol.24 (8), pp.2209
摘要:We present ground-based optical, riometer and magnetometer recordings together with Polar UVI and GOES magnetic field observations of a substorm that occurred over Canada on 24 November 1997. This event involved a clear optical onset followed by poleward motion of the aurora...

我们正在为您处理中,这可能需要一些时间,请稍等。

资源合作:cnki.scholar@cnki.net, +86-10-82896619   意见反馈:scholar@cnki.net

×