Výsledky vyhledávání - "J. A. Schoendorf"

MHD properties of magnetosheath flow

Autor: Bengt U. Ö. Sonnerup, Daniel R. Weimer, K. D. Siebert, N. C. Maynard, George Siscoe, W. W. White, J. A. Schoendorf, Gordon R. Wilson, G. M. Erickson, N. U. Crooker

Publikováno v: Planetary and Space Science. 50:461-471

We discuss four aspects of magnetosheath flow that require MHD for their calculation and understanding. We illustrate these aspects with computations using a numerical MHD code that simulates the global magnetosphere and its magnetosheath. The four i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bf896caf6556e805a6df8cfc396294bd
https://doi.org/10.1016/s0032-0633(02)00026-0

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Simulations of the magnetosphere for zero interplanetary magnetic field: The ground state

Autor: G. M. Erickson, Daniel R. Weimer, W. W. White, K. D. Siebert, George L. Siscoe, Bengt U. Ö. Sonnerup, Nelson C. Maynard, J. A. Schoendorf, Gordon R. Wilson

Publikováno v: Journal of Geophysical Research: Space Physics. 106:29419-29434

A global MHD simulation code, the Integrated Space Weather Prediction Model, is used to examine the steady state properties of the magnetosphere for zero interplanetary magnetic field. In this “ground state” of the system, reconnection at the mag

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::67d261f32d58a053f357b779f4fbd3c0
https://doi.org/10.1029/2001ja000124

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Consequences of geomagnetic history on the high-latitude thermosphere and ionosphere: Averages

Autor: J. A. Schoendorf, Ingo C. F. Müller-Wodarg, Anasuya Aruliah

Publikováno v: Journal of Geophysical Research: Space Physics. 104:28073-28088

The thermospheric effects of “geomagnetic history” and the resulting ion-neutral interactions are determined through the analysis of a long-term database of high latitude neutral winds from Kiruna, Sweden, and simulations with the coupled thermos

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f6ec3b18f9c3aad1a37bc7a5c66e0ed7
https://doi.org/10.1029/1999ja900334

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MHD Simulation of Magnetospheric Transport at the Mesoscale

Autor: G. M. Erickson, Bengt U. Ö. Sonnerup, N. C. Maynard, K. D. Siebert, J. A. Schoendorf, W. W. White, George Siscoe, G. L. Wilson, Daniel R. Weimer

Publikováno v: Space Weather

Global MHD simulations of the magnetosphere reveal unsteady vortical plasma flows at the mesoscale, similar in appearance to fluid turbulence at moderate Reynolds numbers, in the magnetotail under a variety of solar-wind conditions and interplanetary

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e4db2d282de468043045617381d13933
https://doi.org/10.1029/gm125p0229

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Cellular structures in the high-latitude thermosphere

Autor: G. Crowley, Frank A. Marcos, J. A. Schoendorf, Raymond G. Roble

Publikováno v: Journal of Geophysical Research: Space Physics. 101:211-223

An organized density (and pressure) structure was recently discovered in the neutral thermosphere at high-latitudes. The structure consists of two to four high- and low-density regions having diameters of 1000 to 2000 km. The density in each region i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a1aaa494b3be31e7a1c86b72769ba8ba
https://doi.org/10.1029/95ja02584

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Interpretation of an unusual high latitude density decrease in terms of thermospheric density cells

Autor: J. A. Schoendorf, G. Crowley

Publikováno v: Geophysical Research Letters. 22:3023-3026

The discovery of a cellular structure in the high latitude thermospheric (120–350 km) neutral density provides a new framework in which to interpret high latitude density data. During geomagnetically active times, above about 170 km, the cells cons

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::22a97fb991e0717a6e55ed6c86e832d6
https://doi.org/10.1029/95gl02226

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Observed and simulated depletion layers with southward IMF

Autor: Daniel M. Ober, William J. Burke, M. A. Heinemann, N. C. Maynard, George Siscoe, W. W. White, K. D. Siebert, J. A. Schoendorf, J. D. Scudder, G. M. Erickson, Daniel R. Weimer

Publikováno v: Annales Geophysicae, Vol 22, Pp 2151-2169 (2004)
Annales Geophysicae, Vol 22, Iss 6, Pp 2151-2169 (2004)

We present observations from the Polar satellite that confirm the existence of two types of depletion layers predicted under southward interplanetary magnetic field (IMF) conditions in magnetohydrodynamic simulations. The first depletion type occurs

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2aadcc976c507351020026eed32b7073
https://hal.archives-ouvertes.fr/hal-00317448

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Hill model of transpolar potential saturation: Comparisons with MHD simulations

Autor: Daniel R. Weimer, G. M. Erickson, K. D. Siebert, W. W. White, Bengt U. Ö. Sonnerup, Gordon R. Wilson, J. A. Schoendorf, N. C. Maynard, George Siscoe

Publikováno v: Journal of Geophysical Research. 107

[1] We present a comparison between a simple but general model of solar wind-magnetosphere-ionosphere coupling (the Hill model) and the output of a global magnetospheric MHD code, the Integrated Space Weather Prediction Model (ISM). The Hill model pr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::58d726f4161111230b7c1e163b32d633
https://doi.org/10.1029/2001ja000109

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Flow-through magnetic reconnection

Autor: G. M. Erickson, Bengt U. Ö. Sonnerup, J. A. Schoendorf, George Siscoe, K. D. Siebert, Daniel R. Weimer, N. C. Maynard, W. W. White, Gordon R. Wilson

Publikováno v: Geophysical Research Letters. 29

[1] This note reports properties of a little-studied but possibly common mode of magnetic reconnection—“flow-through reconnection” or “FTR”—characterized by plasma flowing at high speed right through a stationary reconnection site. FTR is

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c3c3280998f72f7dded228a12a53f563
https://doi.org/10.1029/2001gl013536

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Predictions of magnetosheath merging between IMF field lines of opposite polarity

Autor: Daniel M. Ober, Bengt U. Ö. Sonnerup, K. D. Siebert, Daniel R. Weimer, M. A. Heinemann, Gordon R. Wilson, N. C. Maynard, George Siscoe, W. W. White, G. M. Erickson, J. A. Schoendorf

Publikováno v: Journal of Geophysical Research: Space Physics. 107:SMP 23-1

[1] Magnetohydrodynamic (MHD) simulations using the Integrated Space Weather Prediction Model (ISM) show merging in the magnetosheath between interplanetary magnetic field (IMF) field lines on opposite sides of a directional discontinuity. As the dis

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c8ba43bf5e9a094ca33bd339df4940ab
https://doi.org/10.1029/2002ja009289

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