Results 31 to 40 of about 18,719 (213)

Coordinated ground-based and Cluster observations of large amplitude global magnetospheric oscillations during a fast solar wind speed interval [PDF]

Annales Geophysicae, 2002
We present magnetospheric observations of very large amplitude global scale ULF waves, from 9 and 10 December 2000 when the upstream solar wind speed exceeded 600 km/s.
I. R. Mann, I. R. Mann, I. Voronkov, M. Dunlop, E. Donovan, T. K. Yeoman, D. K. Milling, J. Wild, K. Kauristie, O. Amm, S. D. Bale, A. Balogh, A. Viljanen, H. J. Opgenoorth   +13 more
doaj   +1 more source

ULF waves in Ganymede's upstream magnetosphere [PDF]

Annales Geophysicae, 2013
Abstract. Ganymede's mini-magnetosphere, embedded in Jupiter's larger one, sustains ULF (ultra-low frequency) waves that are analyzed here using data from two Galileo flybys that penetrate deeply into the upstream closed field line region. The magnetometer data are used to identify field line resonances, magnetopause waves and ion cyclotron waves.
M. Volwerk, X. Jia, C. Paranicas, W. S. Kurth, M. G. Kivelson, K. K. Khurana   +5 more
openaire   +3 more sources

ULF wave activity during the 2003 Halloween superstorm: multipoint observations from CHAMP, Cluster and Geotail missions [PDF]

Annales Geophysicae, 2012
We examine data from a topside ionosphere and two magnetospheric missions (CHAMP, Cluster and Geotail) for signatures of ultra low frequency (ULF) waves during the exceptional 2003 Halloween geospace magnetic storm, when Dst reached ~−380 nT. We
G. Balasis, I. A. Daglis, E. Zesta, C. Papadimitriou, C. Papadimitriou, M. Georgiou, M. Georgiou, R. Haagmans, K. Tsinganos   +8 more
doaj   +1 more source

High resolution observations of spectral width features associatedwith ULF wave signatures in artificial HF radar backscatter [PDF]

Annales Geophysicae, 2004
The EISCAT high power heating facility at Tromsø, northern Norway, has been utilised to generate artificial radar backscatter in the fields of view of the CUTLASS HF radars.
D. M. Wright, T. K. Yeoman, L. J. Baddeley, J. A. Davies, J. A. Davies, R. S. Dhillon, M. Lester, S. E. Milan, E. E. Woodfield, E. E. Woodfield   +9 more
doaj   +1 more source

Effects of ULF wave power on relativistic radiation belt electrons: 8-9 October 2012 geomagnetic storm [PDF]

, 2016
Electromagnetic ultralow-frequency (ULF) waves are known to play a substantial role in radial transport, acceleration, and loss of relativistic particles trapped in the Earth's outer radiation belt.
Mann, IR, Murphy, KR, Ozeke, L, Pokhotelov, D, Rae, IJ   +4 more
core   +1 more source

Magnetospheric ULF Wave Phenomena Stimulated by SSC.

Journal of geomagnetism and geoelectricity, 1997
Several ssc were recorded simultaneously at the low-latitude longitudinal and along the 210° magnetic meridian networks. The considered ULF wave phenomena stimulated by the ssc comprise main and preliminary impulses, Psc 3 pulsations, ssc-related Pc 3 and cavity-like oscillations. The analysis of observed ssc shows that the preliminary impulse is still
YUMOTO K., V. PILIPENKO, E. FEDOROV, N. KURNEVA, DE LAURETIS, Marcello, AND K. KITAMURA   +5 more
openaire   +3 more sources

ULF waves in the Io torus: Ulysses observations [PDF]

Journal of Geophysical Research: Space Physics, 1993
Throughout the Io torus, Ulysses has observed intense ULF wave activity in both electric and magnetic components. Such ULF waves have been previously suggested as the source of ion precipitation leading to Jovian aurorae. The peaks of the wave spectra are closely related to the ion cyclotron frequencies, which is evidence of the waves being ion ...
Lin, Naiguo, Kellogg, P. J., Macdowell, R. J., Mei, Y., Cornilleau-Wehrlin, N., Canu, P., de Villedary, C., Rezeau, L., Balogh, A., Forsyth, R. J.   +9 more
openaire   +2 more sources

On the Close Correspondence Between Storm Time ULF Wave Power and the POES VLF Chorus Wave Amplitude Proxy

Geophysical Research Letters, 2019
Ground‐based Pc5 ultralow frequency (ULF) wave power in multiple ground‐based meridians is compared to the very low frequency (VLF) wave amplitude proxy, derived from Polar Operational Environmental Satellite (POES) precipitation, for the 33 storms ...
Stavros Dimitrakoudis, Ian R. Mann
doaj   +1 more source

The correlation of ULF waves and auroral intensity before, during and after substorm expansion phase onset [PDF]

, 2012
We present case studies of the evolution of magnetic wave amplitudes and auroral intensity through the late growth phase and the expansion phase of the substorm cycle.
Akasofu, Akasofu, Angelopoulos, Angelopoulos, Angenheister, Arnoldy, Asamura, Bösinger, Bösinger, Chaston, Chaston, Chi, Clare E. J. Watt, David K. Milling, Dombeck, Donovan, Friedrich, Glassmeier, Harald U. Frey, Hughes, I. Jonathan Rae, Ian R. Mann, Jacobs, Kepko, Kyle R. Murphy, Lester, Lester, Liang, Liou, Liu, Liu, Louis G. Ozeke, Lui, Lysak, Mann, McPherron, Mende, Mende, Mende, Milling, Murphy, Murphy, Newell, Newton, Nishimura, Peñano, Rae, Rae, Rae, Rae, Saito, Sakaguchi, Shay, Smith, Takahashi, Uozumi, Voronkov, Walsh, Watt, Watt, Watt, Wu, Wygant, Yoshikawa   +63 more
core   +1 more source

Visualization of ULF waves in SuperDARN data [PDF]

Geophysical Research Letters, 2003
Measurements of ionospheric E × B drifts obtained with HF radars from the SuperDARN (Super Dual Auroral Radar) Network sometimes show signatures of ULF (few mHz) waves. We present a new data display technique that facilitates the detection of ULF waves in both ground and sea scatter returns.
Ponomarenko, Pavlo V., Menk, Frederick W., Waters, Colin L.   +2 more
openaire   +1 more source