Results 21 to 30 of about 5,534 (208)

A new climatological electron density model for supporting space weather services

Journal of Space Weather and Space Climate, 2022
The ionosphere is the ionized part of the Earth’s atmosphere, ranging from about 60 km up to several Earth radii, whereas the upper part above about 1000 km height up to the plasmapause is usually called the plasmasphere.
Hoque Mohammed Mainul, Jakowski Norbert, Prol Fabricio S.   +2 more
doaj   +1 more source

The trapping of equatorial magnetosonic waves in the Earth’s outer plasmasphere [PDF]

, 2014
We investigate the excitation and propagation of equatorial magnetosonic waves observed by the Van Allen Probes and describe evidence for a trapping mechanism for magnetosonic waves in the Earth\u27s plasmasphere.
Chen, L., Henderson, M. G., Hospodarsky, G. B., Kletzing, C A., Kurth, W. S., Li, W, Ma, Q., Reeves, Geoffrey, Spence, Harlan E., Thorne, R. M.   +9 more
core   +2 more sources

Does Ring Current Heating Generate the Observed O+ Shell?

Geophysical Research Letters, 2020
The Naval Research Laboratory (NRL) Sami3 is Also a Model of the Ionosphere (SAMI3) ionosphere/plasmasphere code is used to examine the effect of ring current heating during a storm. With a ring current heating function added to SAMI3, a cold thermal (
J. Krall, J. D. Huba, M.‐C. Fok
doaj   +1 more source

Electron loss rates from the outer radiation belt caused by the filling of the outer plasmasphere: The calm before the storm [PDF]

, 2009
Measurements from seven spacecraft in geosynchronous orbit are analyzed to determine the decay rate of the number density of the outer electron radiation belt prior to the onset of high-speed-stream-driven geomagnetic storms.
Borovsky, J. E., Denton, Michael H.
core   +1 more source

The interactions between ULF waves and cold charged particles in the Earth's magnetosphere

地球与行星物理论评, 2022
In the solar wind-magnetosphere coupling processes, many kinds of plasma waves can be excited in the Earth's magnetosphere including ULF waves, hiss waves, chorus waves, etc. Among these waves, ULF waves are featured by the lowest wave frequency (1 mHz～1
Jie Ren, Qiugang Zong
doaj   +1 more source

Resonant scattering of energetic electrons by unusual low-frequency hiss [PDF]

, 2014
We quantify the resonant scattering effects of the unusual low-frequency dawnside plasmaspheric hiss observed on 30 September 2012 by the Van Allen Probes. In contrast to normal (∼100-2000 Hz) hiss emissions, this unusual hiss event contained most of its
Blake, J. B., Bortnik, J., Chen, Lunjin, Claudepierre, S., Fennell, Joseph F., Hospodarsky, G. B., Kletzing, C A., Kurth, W. S., Li, Wen, Ma, Qianli, Ni, Binbin, Reeves, Geoffrey, Spence, Harlan E., Thorne, R. M.   +13 more
core   +2 more sources

Generation of plasmaspheric undulations [PDF]

Geophysical Research Letters, 2008
We have modeled the plasmaspheric plume region using the Comprehensive Ring Current model (CRCM) and the Dynamical Global Core Plasma model (DGCPM), for an event that exhibited substantial undulations or ripples as observed by the IMAGE EUV imager during 17 April 2002. We drove the simulated electric field using the Weimer cross polar cap potential. We
N. Buzulukova, M.‐C. Fok, T. E. Moore, D. M. Ober   +3 more
openaire   +1 more source

Three-Body Dynamics and Self-Powering of an Electrodynamic Tether in a Plasmasphere [PDF]

, 2010
The dynamics of an electrodynamic tether in a three-body gravitational environment are investigated. In the classical two-body scenario the extraction of power is at the expense of orbital kinetic energy.
Bombardelli C., C. Bombardelli, Colombo G., D. Curreli, D. Scheeres, Dobrowolny M., E. C. Lorenzini, Farquhar R. W., Gabriel S. B., Gilchrist B. E., J. Pelaez, M. Lara, M. Sanjurjo-Rivo, Misra A. K., Peláez J., Peláez J., Peláez J., Peláez J., Penzo P., Sanjurjo-Rivo M., Sanmartín J. R., Shampine L. F., Szebehely V., Wong B.   +23 more
core   +2 more sources

Plasmaspheric storm time erosion [PDF]

Journal of Geophysical Research: Space Physics, 2000
Unusually low whistler mode group delay times are observed by VLF Doppler receivers at both Faraday, Antarctica, and Dunedin, New Zealand, following magnetic storms. These are typically caused by plasmaspheric electron concentration depletions near L=2.4 and not by changes in the VLF wave propagation path.
Clilverd, Mark A., Jenkins, Barbara, Thomson, Neil R.   +2 more
openaire   +2 more sources

Origins of plasmaspheric hiss [PDF]

Journal of Geophysical Research: Space Physics, 2006
Plasmaspheric hiss is an electromagnetic wave emission responsible for electron loss from the radiation belts, particularly in the slot region (2 < L < 3). There are two leading theories for the origin of plasmaspheric hiss: in situ amplification of wave turbulence in space and lightning‐generated whistlers.
Meredith, Nigel P., Horne, Richard B., Clilverd, Mark A., Horsfall, David, Thorne, Richard M., Anderson, Roger R.   +5 more
openaire   +2 more sources