O. Amm

4.7k total citations
117 papers, 3.3k citations indexed

About

O. Amm is a scholar working on Astronomy and Astrophysics, Molecular Biology and Geophysics. According to data from OpenAlex, O. Amm has authored 117 papers receiving a total of 3.3k indexed citations (citations by other indexed papers that have themselves been cited), including 110 papers in Astronomy and Astrophysics, 74 papers in Molecular Biology and 66 papers in Geophysics. Recurrent topics in O. Amm's work include Ionosphere and magnetosphere dynamics (110 papers), Geomagnetism and Paleomagnetism Studies (74 papers) and Earthquake Detection and Analysis (63 papers). O. Amm is often cited by papers focused on Ionosphere and magnetosphere dynamics (110 papers), Geomagnetism and Paleomagnetism Studies (74 papers) and Earthquake Detection and Analysis (63 papers). O. Amm collaborates with scholars based in Finland, United States and United Kingdom. O. Amm's co-authors include A. Viljanen, A. Pulkkinen, Kirsti Kauristie, Risto Pirjola, R. Nakamura, Heikki Vanhamäki, J. M. Weygand, Liisa Juusola, T. I. Pulkkinen and V. Angelopoulos and has published in prestigious journals such as Journal of Geophysical Research Atmospheres, Geophysical Research Letters and Space Science Reviews.

In The Last Decade

O. Amm

117 papers receiving 3.1k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
O. Amm Finland 32 2.9k 1.9k 1.6k 185 139 117 3.3k
J. W. Gjerloev United States 30 3.8k 1.3× 2.1k 1.2× 1.7k 1.1× 256 1.4× 176 1.3× 144 4.2k
Yusuke Ebihara Japan 35 3.6k 1.3× 1.6k 0.9× 1.4k 0.9× 226 1.2× 102 0.7× 221 3.8k
J. M. Weygand United States 36 3.3k 1.2× 1.8k 1.0× 1.0k 0.7× 140 0.8× 80 0.6× 160 3.5k
S. A. Boardsen United States 36 3.6k 1.3× 1.4k 0.8× 592 0.4× 129 0.7× 94 0.7× 130 3.7k
L. B. N. Clausen Norway 30 2.3k 0.8× 1.0k 0.6× 880 0.6× 630 3.4× 208 1.5× 118 2.4k
I. J. Rae United Kingdom 37 4.8k 1.7× 2.1k 1.1× 2.1k 1.3× 181 1.0× 88 0.6× 185 5.0k
S. Y. Fu China 37 3.9k 1.3× 1.5k 0.8× 1.1k 0.7× 105 0.6× 44 0.3× 213 4.0k
F. L. Guarnieri Brazil 25 3.0k 1.0× 1.2k 0.6× 1.2k 0.7× 507 2.7× 128 0.9× 80 3.1k
Atsushi Kumamoto Japan 25 2.2k 0.8× 460 0.2× 928 0.6× 267 1.4× 71 0.5× 154 2.3k
J. McFadden United States 31 4.4k 1.5× 1.4k 0.8× 494 0.3× 128 0.7× 60 0.4× 97 4.5k

Countries citing papers authored by O. Amm

Since Specialization
Citations

This map shows the geographic impact of O. Amm'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 O. Amm with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites O. Amm more than expected).

Fields of papers citing papers by O. Amm

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by O. Amm. 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 O. Amm. The network helps show where O. Amm may publish in the future.

Co-authorship network of co-authors of O. Amm

This figure shows the co-authorship network connecting the top 25 collaborators of O. Amm. A scholar is included among the top collaborators of O. Amm 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 O. Amm. O. Amm is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Ieda, A., Shin‐ichiro Oyama, Heikki Vanhamäki, et al.. (2014). Approximate forms of daytime ionospheric conductance. Journal of Geophysical Research Space Physics. 119(12). 18 indexed citations
2.
Volwerk, M., Guy Berchem, Y. V. Bogdanova, et al.. (2011). Interplanetary magnetic field rotations followed from L1 to the ground: the response of the Earth's magnetosphere as seen by multi-spacecraft and ground-based observations. Annales Geophysicae. 29(9). 1549–1569. 5 indexed citations
3.
Weygand, J. M., O. Amm, V. Angelopoulos, et al.. (2009). Equivalent ionospheric currents from the GIMA, Greenland, MACCS, and THEMIS ground magnetometer arrays. EGU General Assembly Conference Abstracts. 10968. 1 indexed citations
4.
Vanhamäki, Heikki, Kirsti Kauristie, O. Amm, et al.. (2009). Electrodynamics of an omega-band as deduced from optical and magnetometer data. Annales Geophysicae. 27(9). 3367–3385. 16 indexed citations
5.
Keiling, A., V. Angelopoulos, A. Runov, et al.. (2009). Substorm current wedge driven by plasma flow vortices: THEMIS observations. Journal of Geophysical Research Atmospheres. 114(A1). 137 indexed citations
6.
Amm, O. & Ryoichi Fujii. (2008). Separation of Cowling channel and local closure currents in the vicinity of a substorm breakup spiral. Journal of Geophysical Research Atmospheres. 113(A6). 20 indexed citations
7.
Weygand, J. M., R. L. McPherron, H. U. Frey, et al.. (2008). Relation of substorm onset to Harang discontinuity. Journal of Geophysical Research Atmospheres. 113(A4). 22 indexed citations
8.
Runov, A., W. Baumjohann, R. Nakamura, et al.. (2008). Observations of an active thin current sheet. Journal of Geophysical Research Atmospheres. 113(A7). 39 indexed citations
9.
Hubert, B., O. Amm, S. E. Milan, et al.. (2007). Auroral streamers and magnetic flux closure. Geophysical Research Letters. 34(15). 6 indexed citations
10.
Juusola, Liisa, O. Amm, & A. Viljanen. (2006). One-dimensional spherical elementary current systems and their use for determining ionospheric currents from satellite measurements. Earth Planets and Space. 58(5). 667–678. 27 indexed citations
11.
Weygand, J. M., et al.. (2005). Substorm onset location and the Harang discontinuity. AGU Fall Meeting Abstracts. 2005. 1 indexed citations
12.
Uspensky, M. V., A. V. Koustov, Viktoria Sofieva, et al.. (2005). Multipulse and double‐pulse velocities of Scandinavian Twin Auroral Radar Experiment (STARE) echoes. Radio Science. 40(3). 5 indexed citations
13.
Vanhamäki, Heikki, O. Amm, & A. Viljanen. (2003). One-dimensional upward continuation of the ground magnetic field disturbance using spherical elementary current systems. Journal of geomagnetism and geoelectricity. 55(10). 613–625. 2 indexed citations
14.
Partamies, Noora, et al.. (2003). A pseudo‐breakup observation: Localized current wedge across the postmidnight auroral oval. Journal of Geophysical Research Atmospheres. 108(A1). 17 indexed citations
15.
Amm, O.. (2002). The Method of Characteristics For Calculating Ionospheric Electrodynamics From Multi-satellite and Ground-based Radar Data. EGS General Assembly Conference Abstracts. 431. 2 indexed citations
16.
McPherron, R. L., M. G. Kivelson, K. K. Khurana, et al.. (2002). A Comparison of Cluster Observations of the Tail Current during Substorms and Quiet Times. AGU Fall Meeting Abstracts. 2002. 2 indexed citations
17.
Amm, O., P. Janhunen, Kirsti Kauristie, et al.. (2001). Mesoscale ionospheric electrodynamics observed with the MIRACLE network: 1. Analysis of a pseudobreakup spiral. Journal of Geophysical Research Atmospheres. 106(A11). 24675–24690. 11 indexed citations
18.
Amm, O.. (2001). The elementary current method for calculating ionospheric current systems from multisatellite and ground magnetometer data. Journal of Geophysical Research Atmospheres. 106(A11). 24843–24855. 25 indexed citations
19.
Amm, O., et al.. (1999). Spatial distribution of conductances and currents associated with a north-south auroral form during a multiple-substorm period. Annales Geophysicae. 17(11). 1385–1385. 2 indexed citations
20.
Pulkkinen, T. I., P. Janhunen, A. Viljanen, et al.. (1998). Observations of Substorm Electrodynamics Using the MIRACLE Network. 238. 111–114. 58 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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