Birkeland currents derived from EISCAT measurements: two case studies
Measurements of ion velocities by the Svalbard EISCAT Radar (ESR) has been used to calculate Birkeland current densities. Birkeland currents are field-aligned currents flowing along Earth’s magnetic field lines at high latitudes. These calcu- lated densities has been analyzed together with data from...
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| Format: | Master Thesis |
| Language: | Norwegian Bokmål |
| Published: |
2018
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| Online Access: | http://hdl.handle.net/10852/61821 http://urn.nb.no/URN:NBN:no-64422 |
| Summary: | Measurements of ion velocities by the Svalbard EISCAT Radar (ESR) has been used to calculate Birkeland current densities. Birkeland currents are field-aligned currents flowing along Earth’s magnetic field lines at high latitudes. These calcu- lated densities has been analyzed together with data from the Advanced Compo- sition Explorer satellite (ACE) containing values of parameters in the solar wind and interplanetary magnetic field (IMF). A connection between larger Birkeland current densities and changes in the IMF parameters By or Bz is revealed. |
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