L. Häkkinen

513 total citations
16 papers, 391 citations indexed

About

L. Häkkinen is a scholar working on Astronomy and Astrophysics, Molecular Biology and Geophysics. According to data from OpenAlex, L. Häkkinen has authored 16 papers receiving a total of 391 indexed citations (citations by other indexed papers that have themselves been cited), including 13 papers in Astronomy and Astrophysics, 11 papers in Molecular Biology and 7 papers in Geophysics. Recurrent topics in L. Häkkinen's work include Ionosphere and magnetosphere dynamics (12 papers), Geomagnetism and Paleomagnetism Studies (11 papers) and Solar and Space Plasma Dynamics (8 papers). L. Häkkinen is often cited by papers focused on Ionosphere and magnetosphere dynamics (12 papers), Geomagnetism and Paleomagnetism Studies (11 papers) and Solar and Space Plasma Dynamics (8 papers). L. Häkkinen collaborates with scholars based in Finland, Norway and Russia. L. Häkkinen's co-authors include A. Viljanen, Risto Pirjola, H. Nevanlinna, E. I. Tanskanen, T. I. Pulkkinen, N. E. Papitashvili, M. Menvielle, A. Pulkkinen, O. Amm and N. E. Turner and has published in prestigious journals such as Journal of Geophysical Research Atmospheres, Geophysical Research Letters and Geophysical Journal International.

In The Last Decade

L. Häkkinen

15 papers receiving 352 citations

Peers

L. Häkkinen
T. Kamei Japan
Satoru Tsunomura Japan
J. Verö Hungary
K. Kitamura Japan
Zhonghua Xu United States
V. G. Andrezen Russia
Sarah Bentley United Kingdom
L.V. Kozak Ukraine
Peter Chi United States
Igino Coco Italy
T. Kamei Japan
L. Häkkinen
Citations per year, relative to L. Häkkinen L. Häkkinen (= 1×) peers T. Kamei

Countries citing papers authored by L. Häkkinen

Since Specialization
Citations

This map shows the geographic impact of L. Häkkinen's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by L. Häkkinen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites L. Häkkinen more than expected).

Fields of papers citing papers by L. Häkkinen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by L. Häkkinen. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by L. Häkkinen. The network helps show where L. Häkkinen may publish in the future.

Co-authorship network of co-authors of L. Häkkinen

This figure shows the co-authorship network connecting the top 25 collaborators of L. Häkkinen. A scholar is included among the top collaborators of L. Häkkinen based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with L. Häkkinen. L. Häkkinen is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

16 of 16 papers shown
1.
Tanskanen, E. I., K. Snekvik, J. A. Slavin, et al.. (2017). Solar Cycle Occurrence of Alfvénic Fluctuations and Related Geo‐Efficiency. Journal of Geophysical Research Space Physics. 122(10). 9848–9857. 5 indexed citations
2.
Nevanlinna, H., L. Häkkinen, & Tero Raita. (2011). Geomagnetic Activity at the Sodankylä Observatory, 1914-2010. 1 indexed citations
3.
Nevanlinna, H. & L. Häkkinen. (2010). Results of Russian geomagnetic observatories in the 19th century: magnetic activity, 1841–1862. Annales Geophysicae. 28(4). 917–926. 12 indexed citations
4.
Pulkkinen, A., A. Viljanen, Risto Pirjola, & L. Häkkinen. (2009). ELECTROMAGNETIC SOURCE EQUIVALENCE AND EXTENSION OF THE COMPLEX IMAGE METHOD FOR GEOPHYSICAL APPLICATIONS. Progress In Electromagnetics Research B. 16. 57–84. 2 indexed citations
5.
Häkkinen, L., T. I. Pulkkinen, Risto Pirjola, et al.. (2003). Seasonal and diurnal variation of geomagnetic activity: Revised Dst versus external drivers. Journal of Geophysical Research Atmospheres. 108(A2). 28 indexed citations
6.
Häkkinen, L., T. I. Pulkkinen, H. Nevanlinna, Risto Pirjola, & E. I. Tanskanen. (2002). Effects of induced currents on Dst and on magnetic variations at midlatitude stations. Journal of Geophysical Research Atmospheres. 107(A1). 50 indexed citations
7.
Tanskanen, E. I., A. Viljanen, T. I. Pulkkinen, et al.. (2001). At substorm onset, 40% of AL comes from underground. Journal of Geophysical Research Atmospheres. 106(A7). 13119–13134. 68 indexed citations
8.
Viljanen, A. & L. Häkkinen. (1997). Image Magnetometer Network. 1198. 111. 114 indexed citations
9.
Сергеев, В. А., Anita Aikio, T. Bösinger, et al.. (1996). Nighttime patterns of ionospheric convection, conductance, horizontal and field-aligned currents during a steady magnetospheric convection event. Journal of Atmospheric and Terrestrial Physics. 58(1-4). 107–119. 3 indexed citations
10.
Menvielle, M., et al.. (1995). Computer production of Kindices: review and comparison of methods. Geophysical Journal International. 123(3). 866–886. 60 indexed citations
11.
Viljanen, A., Risto Pirjola, & L. Häkkinen. (1993). An Attempt to Reduce Induction Source Effects at High Latitudes.. Journal of geomagnetism and geoelectricity. 45(9). 817–831. 14 indexed citations
12.
Nevanlinna, H., et al.. (1993). Geomagnetic activity during solar cycle 9 (1844–1856). Geophysical Research Letters. 20(8). 743–746. 9 indexed citations
13.
Papitashvili, N. E., et al.. (1992). Magnetospheric contribution toK-indices. Geophysical Journal International. 111(2). 348–356. 7 indexed citations
14.
Nevanlinna, H. & L. Häkkinen. (1991). Geomagnetic Effect of the Total Solar Eclipse on July 22, 1990.. Journal of geomagnetism and geoelectricity. 43(4). 319–321. 13 indexed citations
15.
Häkkinen, L. & Jouni Rynö. (1990). Measuring sensitivities and orthogonalities of magnetometer sensors in the Nurmijarvi coil hut. 37–39. 1 indexed citations
16.
Clauer, C. R., John D. Kelly, M. Lockwood, et al.. (1989). June 1987 GISMOS experiment: Preliminary report on high time resolution, multi-radar measurements. Advances in Space Research. 9(5). 29–33. 4 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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