Zobrazeno 1 - 10 of 67 pro vyhledávání: '"J. L. Posch"'
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Akademický článek
Field line distribution of density at L=4.8 inferred from observations by CLUSTER
Autor: R. E. Denton, P. Décréau, M. J. Engebretson, F. Darrouzet, J. L. Posch, C. Mouikis, L. M. Kistler, C. A. Cattell, K. Takahashi, S. Schäfer, J. Goldstein
Publikováno v: Annales Geophysicae, Vol 27, Pp 705-724 (2009)
For two events observed by the CLUSTER spacecraft, the field line distribution of mass density ρ was inferred from Alfvén wave harmonic frequencies and compared to the electron density ne from plasma wave data and the oxygen density nO+ from the
Externí odkaz: https://doaj.org/article/dd390ab5fd0d44fab8bd4057f997752d
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4
Location of intense electromagnetic ion cyclotron (EMIC) wave events relative to the plasmapause: Van Allen Probes observations
Autor: C. N. Olson, Scott Thaller, S. S. Tetrick, J. F. Fennell, Mark J. Engebretson, John R. Wygant, Elizabeth MacDonald, J. L. Posch, Charles W. Smith, Geoffrey D. Reeves, Richard E. Denton
Publikováno v: Journal of Geophysical Research: Space Physics. 122:4064-4088
We have studied the spatial location relative to the plasmapause (PP) of the most intense electromagnetic ion cyclotron (EMIC) waves observed on Van Allen Probes A and B during their first full precession in local time. Most of these waves occurred o
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cf72fad0667c84b1c7f44c6c8e98ca2d
https://doi.org/10.1002/2016ja023392
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6
Low‐harmonic magnetosonic waves observed by the Van Allen Probes
Autor: Aaron Breneman, John R. Wygant, Mark J. Engebretson, Craig Kletzing, J. L. Posch, Geoffrey D. Reeves, Scott Thaller, C. N. Olson, Charles W. Smith, Scott A. Boardsen
Publikováno v: Journal of Geophysical Research: Space Physics. 120:6230-6257
Purely compressional electromagnetic waves (fast magnetosonic waves), generated at multiple harmonics of the local proton gyrofrequency, have been observed by various types of satellite instruments (fluxgate and search coil magnetometers and electric
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::29cc0b9b75d3a5415f315dafd6942a27
https://doi.org/10.1002/2015ja021179
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7
Van Allen probes, NOAA, GOES, and ground observations of an intense EMIC wave event extending over 12 h in magnetic local time
Autor: J. L. Posch, Geoffrey D. Reeves, Daniel N. Baker, Harlan E. Spence, Richard B. Horne, Ian R. Mann, Kazuo Shiokawa, Marc Lessard, C. L. Huang, John R. Wygant, Charles W. Smith, Yoshiharu Omura, Howard J. Singer, Kjellmar Oksavik, Matina Gkioulidou, Craig Kletzing, Tero Raita, Mark J. Engebretson
Publikováno v: Journal of Geophysical Research: Space Physics. 120:5465-5488
Although most studies of the effects of electromagnetic ion cyclotron (EMIC) waves on Earth's outer radiation belt have focused on events in the afternoon sector in the outer plasmasphere or plume region, strong magnetospheric compressions provide an
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e66e9ff3b70dad65f350992d8dd6494
https://doi.org/10.1002/2015ja021227
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8
Investigating the IMF cone angle control of Pc3-4 pulsations observed on the ground
Autor: Elianna A. Bier, Marc Lessard, Viacheslav Pilipenko, Nana Owusu, Mark J. Engebretson, J. L. Posch
Publikováno v: Journal of Geophysical Research: Space Physics. 119:1797-1813
Many studies have shown that Pc3-4 pulsations (~0.014–0.1 Hz) observed in Earth's magnetosphere during daytime hours originate in the ion foreshock region of the solar wind, just upstream from Earth's bow shock. They occur when the interplanetary m
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ca1b33be755dc4cb92c8880ed4a5a6da
https://doi.org/10.1002/2013ja019637
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9
Simultaneous traveling convection vortex events and Pc1 wave bursts at cusp latitudes observed in Arctic Canada and Svalbard
Autor: A. J. Witte, Howard J. Singer, J. L. Posch, Marc Lessard, D. Murr, Magnar Gullikstad Johnsen, Michael Hartinger, Mark J. Engebretson
Publikováno v: Journal of Geophysical Research: Space Physics. 118:6352-6363
[1] Traveling convection vortices (TCVs), which appear in ground magnetometer records at near-cusp latitudes as solitary ~5 mHz pulses, are a signature of dynamical processes in the ion foreshock upstream of the Earth's bow shock that can stimulate t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::595821eb45c3ada82f2ff7ac95c9ebb1
https://doi.org/10.1002/jgra.50604
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10
Multi-instrument observations from Svalbard of a traveling convection vortex, electromagnetic ion cyclotron wave burst, and proton precipitation associated with a bow shock instability
Autor: Michael Hartinger, J. L. Posch, Tero Raita, Fred Sigernes, Joran Moen, Viacheslav Pilipenko, Lasse Boy Novock Clausen, Marc Lessard, Kjellmar Oksavik, Tim K. Yeoman, Magnar Gullikstad Johnsen, Benoit Lavraud, Finn Søraas, Claudia Stolle, Mark J. Engebretson
Publikováno v: Journal of Geophysical Research: Space Physics. 118:2975-2997
[1] An isolated burst of 0.35 Hz electromagnetic ion cyclotron (EMIC) waves was observed at four sites on Svalbard from 0947 to 0954 UT 2 January 2011, roughly 1 h after local noon. This burst was associated with one of a series of ~50 nT magnetic im
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f1f8f5c80db2cdf59ab687585c5d75f2
https://doi.org/10.1002/jgra.50291
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