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Skip to Search Results- 14Rankin, Robert
- 8Gombosi, Tamas I.
- 8Kabin, Konstantin
- 8Rae, I. Johnathan
- 8Ridley, Aaron J.
- 6Clauer, C. Robert
- 4Global Mhd Modeling
- 3Imf
- 3Open-Closed Field Line Boundary
- 3Simulations
- 2Auroral Arcs
- 2Birkeland Currents
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Dipole tilt effects on the magnetosphere‐ionosphere convection system during interplanetary magnetic field BY‐dominated periods: MHD modeling
Download2010
Kabin, Konstantin, Rankin, Robert, Gombosi, Tamas I., Sofko, George J., Ridley, Aaron J., Watanabe, Masakazu
Using numerical magnetohydrodynamic simulations, we examine the dipole tilt effects on the magnetosphere-ionosphere convection system when the interplanetary magnetic field is oblique northward (B-Y = 4 nT and B-Z = 2 nT). In particular, we clarify the relationship between viscous-driven...
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2014
Watt, Clare E. J., Hodgson, Cory R., Forsyth, Colin, Degeling, Alex W., Murphy, K. R., Rankin, Robert, Mann, Ian R., Rostoker, Gordon, Frey, Harald U., Rae, I. Johnathan
In this paper, we show that periodic auroral arc structures are seen at the location of one particular auroral substorm onset for the 15 min preceding onset, suggesting that field line resonances should be considered a strong candidate for triggering substorm onset. Irrespective of whether this...
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Origin of the interhemispheric potential mismatch of merging cells for interplanetary magnetic field BY‐dominated periods
Download2007
Kabin, Konstantin, Rankin, Robert, Gombosi, Tamas I., Sofko, George J., Ridley, Aaron J., Watanabe, Masakazu, Clauer, C. Robert
When the dawn-to-dusk component of the interplanetary magnetic field (IMF B-Y) is dominant, ionospheric convection exhibits a basic two-cell pattern with significant dawn-dusk and interhemispheric asymmetries. For IMF B-Y > 0 the duskside merging cell potential in the Northern Hemisphere is much...
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Open‐closed field line boundary position: A parametric study using an MHD modelournal of Geophysical Research: Space Physics, 109(A5), [pp
Download2004
Clauer, C. Robert, Rostoker, G., Kabin, Konstantin, Gombosi, Tamas I., DeZeeuw, Darren L., Rankin, Robert, Rae, I. Jonathan, Marchand, Richard, Ridley, Aaron J.
In this paper we investigate the effect of changes in the interplanetary magnetic field ( IMF), solar wind dynamic pressure, and dipole tilt angle on the position of the ionospheric projection of the open-closed field line boundary (OCB) in a magnetohydrodynamic (MHD) model. We carry out a large...
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Magnetospheric convection and magnetopause shadowing effects in ULF wave‐driven energetic electron transport
Download2013
Murphy, Kyle, Degeling, Alex W., Rankin, Robert, Rae, I. Johnathan
Magnetospheric radiation belt electron transport in the presence of ULF waves and a convection electric field is investigated using a model that includes a nightside plasma sheet source and electron losses by magnetopause shadowing. Narrow-band ULF waves launched from a prescribed dayside...
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2005-01-01
Rankin, Robert, Ridley, Aaron J., Gombosi, Tamas I., Clauer, C. Robert, Watanabe, Masakazu, Kabin, Konstantin, Sofko, George J.
On the basis of magnetohydrodynamic simulation results for northward interplanetary magnetic field ( IMF) and significant dipole tilt, we describe internal reconnection processes that occur earthward of the magnetopause subsequent to magnetopause reconnection. We discuss the associated...
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Comparison of photometer and global MHD determination of the open‐closed field line boundaryournal of Geophysical Research: Space Physics, 109(A1), [pp
Download2004
Liu, W., Wanliss, J. A., Kabin, Konstantin, Gombosi, Tamas I., Fenrich, F. R., Rae, I. Jonathan, Ridley, Aaron J., De Zeeuw, Darren L., Rankin, Robert
We compare open-closed field line boundary positions from the BATS-R-US Global MHD model and CANOPUS photometer measurements of red-line emissions. We choose intervals of steady interplanetary and ionospheric conditions in order to adhere to the \"steady-state'' picture that we are trying to...
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2006
Wright, Darren M., Watt, Clare E. J., Rae, I. Johnathan, Rankin, Robert
We present results from self-consistent simulations of the electron response to shear Alfvén pulses in the presence of non-uniform magnetic fields and the associated mirror force. We discuss how energies of resonantly accelerated beam particles are affected by the local phase velocity of the...
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Comparison of the open‐closed separatrix in a global magnetospheric simulation with observations: The role of the ring current
Download2010
Kabin, Konstantin, Lu, J. Y., Rankin, Robert, Gombosi, Tamas I., Watt, Clare E. J., Ridley, Aaron J., Toth, Gabor, Milan, Steve E., Zhang, Jichun, Rae, I. Johnathan, Clauer, C. Robert, De Zeeuw, Darren L., Fenrich, Frances
The development of global magnetospheric models, such as Space Weather Modeling Framework (SWMF), which can accurately reproduce and track space weather processes has high practical utility. We present an interval on 5 June 1998, where the location of the polar cap boundary, or open-closed field...
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2008
Marchand, Richard, Lu, J. Y., Rankin, Robert, Solomon, Stanley C., Wang, Wenbin, Le, G. M., Wang, J. S., Lei, J., Rae, I. Johnathan
A new interactive M-I coupling model that describes the dynamic interaction between magnetospheric dispersive waves, compressional modes, and auroral electron precipitations is applied to investigate the geomagnetic electromagnetic pulsations observed in Earth's magnetosphere in terms of...