H. Nevanlinna

The effects of geomagnetic disturbances on electrical systems at the Earth's surface

D. H. Boteler, Risto Pirjola, H. Nevanlinna · Advances in Space Research · 1998 · 485 citations

Geophysics, Magnetism, Electrical Engineering +10

Time derivative of the horizontal geomagnetic field as an activity indicator

A. Viljanen, H. Nevanlinna, K. Pajunpää et al. · Annales Geophysicae · 2001 · 185 citations · Full text

Engineering, Solar-terrestrial Interaction, Earth Science +20

An extension of the geomagnetic activity index series <i><b>aa</b></i> for two solar cycles (1844–1868)

H. Nevanlinna, E. Kataja · Geophysical Research Letters · 1993 · 120 citations

Reconstruction of geomagnetic activity and near-Earth interplanetary conditions over the past 167 yr – Part 4: Near-Earth solar wind speed, IMF, and open solar flux

M. Lockwood, H. Nevanlinna, Luke Barnard et al. · Annales Geophysicae · 2014 · 72 citations · Full text

Engineering, Solar Convection, Aa Index +20

Results of the Helsinki magnetic observatory 1844-1912

H. Nevanlinna · Annales Geophysicae · 2004 · 70 citations · Full text

Geophysics, Engineering, Solar Convection +14