120 citations · 599 across the 11 of their papers we have counts for
10 papers
Observations of Asymmetric Lobe Convection for Weak and Strong Tail Activity
A. Ohma, N. Østgaard, J. P. Reistad +6
In this study we use high-quality convection data from the Electron Drift Instrument on board Cluster to investigate how near-Earth tail activity affects the average convection pat…
Characteristics of the Flank Magnetopause: THEMIS Observations
S. Haaland, A. Runov, A. Artemyev +1
The terrestrial magnetopause is the boundary that shields the Earth's magnetosphere on one side from the shocked solar wind and its embedded interplanetary magnetic field on the ot…
How the IMF Induces a Local Component During Northward IMF and Characteristic Timescales
P. Tenfjord, N. Østgaard, S. Haaland +7
We use the Lyon-Fedder-Mobarry global magnetohydrodynamics model to study the effects of the interplanetary magnetic field (IMF) component on the coupling between…
Observations of Asymmetries in Ionospheric Return Flow During Different Levels of Geomagnetic Activity
J. P. Reistad, N. Østgaard, K. M. Laundal +7
It is known that the magnetic field of the Earth's closed magnetosphere can be highly displaced from the quiet-day configuration when interacting with the interplanetary magnetic f…
North-south asymmetries in cold plasma density in the magnetotail lobes: Cluster observations
S. Haaland, B. Lybekk, L. Maes +7
In this paper, we present observations of cold (0-70 eV) plasma density in the magnetotail lobes. The observations and results are based on 16 years of Cluster observation of space…
Dawn-dusk asymmetries in the coupled solar wind-magnetosphere-ionosphere system: a review
A. P. Walsh, S. Haaland, C. Forsyth +8
Dawn-dusk asymmetries are ubiquitous features of the coupled solar-wind-magnetosphere-ionosphere system. During the last decades, increasing availability of satellite and ground-ba…
North-South Asymmetries in Earth's Magnetic Field: Effects on High-Latitude Geospace
K. M. Laundal, I. Cnossen, S. E. Milan +5
The solar-wind magnetosphere interaction primarily occurs at altitudes where the dipole component of Earth's magnetic field is dominating. The disturbances that are created in this…
Birkeland current effects on high-latitude groundmagnetic field perturbations
K. M. Laundal, S. E. Haaland, N. Lehtinen +8
Magnetic perturbations on ground at high latitudes are directly associated only with the divergence-free component of the height-integrated horizontal ionospheric current, $\textbf…
How the IMF induces a component in the closed magnetosphere and how it leads to asymmetric currents and convection patterns in the two hemispheres
P. Tenfjord, N. Østgaard, K. Snekvik +4
We used the Lyon-Fedder-Mobarry global magnetohydrodynamics model to study the effects of the interplanetary magnetic field (IMF) IMF component on the coupling bet…
Estimation of cold plasma outflow during geomagnetic storms
S. Haaland, A. Eriksson, M. André +11
Low-energy ions of ionospheric origin constitute a significant contributor to the magnetospheric plasma population. Measuring cold ions is difficult though. Observations have to be…