Zobrazeno 1 - 10
of 118
pro vyhledávání: '"K. Nykyri"'
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-8 (2023)
Abstract Kelvin-Helmholtz Instability is ubiquitous at Earth’s magnetopause and plays an important role in plasma entry into the magnetosphere during northward interplanetary magnetic fields. Here, using one solar cycle of data from NASA THEMIS (Ti
Externí odkaz:
https://doaj.org/article/b4d96a35a51546a1b80e511cf29777bf
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 16, Pp n/a-n/a (2023)
Abstract Ultra‐low frequency (ULF) wave observations across the heliosphere often rely on the sign of correlations between plasma (density/pressure) and magnetic field perturbations to distinguish between fast and slow magnetosonic modes. However,
Externí odkaz:
https://doaj.org/article/c8d1ecf7967e4055aa63a11f5f55b65d
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 9 (2022)
To investigate the meso-scale structure (100 s of km) of the ionosphere at mid-latitudes, the spectral properties in calculated total electron content (TEC) at a cluster of GPS receivers in and around Florida are analyzed. The ionosphere does not res
Externí odkaz:
https://doaj.org/article/edb50aed628e4f708adcd6d2d724a2f3
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 8 (2022)
The Kelvin–Helmholtz (KH) instability of magnetohydrodynamic surface waves at the low latitude boundary layer is examined using both an eigenfrequency analysis and a time-dependent wave simulation. The analysis includes the effects of sheared flow
Externí odkaz:
https://doaj.org/article/bdd0a49c3f5344048aaef4c234471f95
Autor:
E. A. Kronberg, J. Gorman, K. Nykyri, A. G. Smirnov, J. W. Gjerloev, E. E. Grigorenko, L. V. Kozak, X. Ma, K. J. Trattner, M. Friel
Publikováno v:
Frontiers in Physics, Vol 9 (2021)
The Kelvin-Helmholtz instability (KHI) and its effects relating to the transfer of energy and mass from the solar wind into the magnetosphere remain an important focus of magnetospheric physics. One such effect is the generation of Pc4-Pc5 ultra low
Externí odkaz:
https://doaj.org/article/20ea71f609184777aa346b8ca1d61aef
Publikováno v:
Annales Geophysicae, Vol 34, Pp 511-528 (2016)
The local and global plasma properties in the magnetosheath play a fundamental role in regulating solar wind–magnetosphere coupling processes. However, the magnetosheath is a complex region to characterise as it has been shown theoretically, obs
Externí odkaz:
https://doaj.org/article/033bcae26be44499970bd6bf5fd237c9
Publikováno v:
Annales Geophysicae, Vol 31, Pp 1993-2011 (2013)
We have estimated the ionospheric location, area, and travel time of quasi-periodic oscillations originating from the magnetospheric flanks. This was accomplished by utilizing global and local MHD models and Tsyganenko semi-empirical magnetic fiel
Externí odkaz:
https://doaj.org/article/37f24f9f307d4bc990a7fc89d2112283
Publikováno v:
Annales Geophysicae, Vol 30, Pp 325-341 (2012)
We present results from mesoscale simulations of the magnetospheric cusp region for both strongly northward and strongly southward interplanetary magnetic field (IMF). Simulation results indicate an extended region of depressed magnetic field and
Externí odkaz:
https://doaj.org/article/408915abbe2f493e9c08a83eb9a6378c
Publikováno v:
Annales Geophysicae, Vol 29, Pp 759-770 (2011)
We present a local mesoscale model of the magnetospheric cusp region with high resolution (up to 300 km). We discuss the construction and implementation of the initial configuration and give a detailed description of the numerical simulation. An o
Externí odkaz:
https://doaj.org/article/a12557d10d8c4ad0a72729a7df3e58c8
Publikováno v:
Annales Geophysicae, Vol 24, Pp 2619-2643 (2006)
On 3 July 2001, the four Cluster satellites traversed along the dawnside magnetospheric flank and observed large variations in all plasma parameters. The estimated magnetopause boundary normals were oscillating in the z-direction and the normal co
Externí odkaz:
https://doaj.org/article/bcfde795d1b34657bdf57753d8c00ba0