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Anders Ohma

Postdoctoral Fellow
  • E-mailAnders.Ohma@uib.no
  • Visitor Address
    Allégaten 55
  • Postal Address
    Postboks 7803
    5020 BERGEN
Academic article
  • Show author(s) (2021). Modulation of Magnetospheric Substorm Frequency: Dipole Tilt and IMF By Effects. Journal of Geophysical Research (JGR): Space Physics.
  • Show author(s) (2020). Seasonal and Hemispheric Asymmetries of F Region Polar Cap Plasma Density: Swarm and CHAMP Observations. Journal of Geophysical Research (JGR): Space Physics. 13 pages.
  • Show author(s) (2020). An Explicit IMF B 𝑦 Dependence on Solar Wind-Magnetosphere Coupling. Geophysical Research Letters. 8 pages.
  • Show author(s) (2019). Separation and quantification of ionospheric convection sources: 2. The dipole tilt angle influence on reverse convection cells during northward IMF. Journal of Geophysical Research (JGR): Space Physics. 6182-6194.
  • Show author(s) (2019). Separation and quantification of ionospheric convection sources: 1. A new technique. Journal of Geophysical Research (JGR): Space Physics. 6343-6357.
  • Show author(s) (2019). Observations of asymmetric lobe convection for weak and strong tail activity. Journal of Geophysical Research (JGR): Space Physics. 9999-10017.
  • Show author(s) (2018). The asymmetric geospace as displayed during the geomagnetic storm on 17 August 2001. Annales Geophysicae. 1577-1596.
  • Show author(s) (2018). Observations of asymmetries in ionospheric return flow during different levels of geomagnetic activity. Journal of Geophysical Research (JGR): Space Physics. 4638-4651.
  • Show author(s) (2018). Interplanetary Magnetic Field Bx Component Influence on Horizontal and Field-Aligned Currents in the Ionosphere. Journal of Geophysical Research (JGR): Space Physics. 3360-3379.
  • Show author(s) (2018). How the IMF By Induces a Local By Component During Northward IMF Bz and Characteristic Timescales. Journal of Geophysical Research (JGR): Space Physics. 3333-3348.
  • Show author(s) (2018). Evolution of Asymmetrically Displaced Footpoints During Substorms. Journal of Geophysical Research (JGR): Space Physics. 10,030-10,063.
  • Show author(s) (2017). North-south asymmetries in cold plasma density in the magnetotail lobes: Cluster observations. Journal of Geophysical Research (JGR): Space Physics. 136-149.
Academic lecture
  • Show author(s) (2021). Hemispheric and seasonal variations in the cold plasma outflow source region: Swarm and CHAMP observations of F-region polar cap electron density.
  • Show author(s) (2020). Modulation of magnetospheric substorm frequency: Dipole tilt and IMF By effects.
  • Show author(s) (2020). How tail reconnection affects the asymmetric state of the magnetosphere in the LFM model.
  • Show author(s) (2020). Hemispheric and seasonal variations in the cold plasma outflow source region: polar cap ionosphere electron density at 350–500 km.
  • Show author(s) (2019). Observations of Asymmetric Lobe Convection for Weak and Strong Tail Reconnection.
  • Show author(s) (2019). How asymmetries in Geospace evolve during increased tail reconnection.
  • Show author(s) (2019). How Asymmetries in Geospace Evolve During Substorms.
  • Show author(s) (2019). Cluster EDI Observations of the Asymmetric Plasma Convection in the Magnetotail Lobes During Different Levels of Tail Reconnection Rate .
  • Show author(s) (2019). A new way to identify and quantify the sources of ionospheric convection.
  • Show author(s) (2018). Plasma circulation inside the polar cap and lobe reconnection.
  • Show author(s) (2017). The influence of plasma flows bringing the magnetotail back to a more symmetric configuration.
  • Show author(s) (2017). Seasonal and IMF-controlled variations in the large-scale true horizontal ionospheric current.
  • Show author(s) (2017). North-south asymmetries in polar ionospheric currents - effects of asymmetries in the main magnetic field.
  • Show author(s) (2017). North-south asymmetries in lobe density: Cluster observations.
  • Show author(s) (2017). North-South asymmetries in cold plasma density.
  • Show author(s) (2017). Characterizing external influence on the large-scale polar ionospheric current system.
Doctoral dissertation
  • Show author(s) (2019). How Asymmetries in Geospace Evolve During Increased Tail Reconnection .
Poster
  • Show author(s) (2019). Quantifying the dipole tilt influence on reverse convection cells during northward IMF using spherical elementary functions.
  • Show author(s) (2019). A new way to identify and quantify the sources of ionospheric convection.
  • Show author(s) (2018). Evolution of asymmetrically displaced footpoints during substorms.
  • Show author(s) (2017). When and where is the process of restoring symmetry important?
  • Show author(s) (2017). Evolution of asymmetrically displaced footpoints during substorms.
  • Show author(s) (2017). Evolution of asymmetrically displaced footpoints during substorms.

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