63 citations · 162 across the 16 of their papers we have counts for
Showing 2011Show all
3 papers · 1 filter
physics.space-ph2011★ 15 cited
Is there long-range memory in solar activity on time scales shorter than the sunspot period?
Martin Rypdal, Kristoffer Rypdal
The sunspot number (SSN), the total solar irradiance (TSI), a TSI reconstruction, and the solar flare index (SFI), are analyzed for long-range persistence (LRP). Standard Hurst ana…
physics.space-ph2011★ 3 cited
Organization of the magnetosphere during substorms
Tatjana Zivkovic, Kristoffer Rypdal
The change in degree of organization of the magnetosphere during substorms is investigated by analyzing various geomagnetic indices, as well as interplanetary magnetic field z-comp…
physics.space-ph2011★ 5 cited
Low-dimensionality and predictability of solar wind and global magnetosphere during magnetic storms
Tatjana Zivkovic, Kristoffer Rypdal
The storm index SYM-H, the solar wind velocity v, and interplanetary magnetic field Bz show no signatures of low-dimensional dynamics in quiet periods, but tests for determinism in…