P.N. Collis

951 total citations
47 papers, 831 citations indexed

About

P.N. Collis is a scholar working on Astronomy and Astrophysics, Geophysics and Aerospace Engineering. According to data from OpenAlex, P.N. Collis has authored 47 papers receiving a total of 831 indexed citations (citations by other indexed papers that have themselves been cited), including 46 papers in Astronomy and Astrophysics, 26 papers in Geophysics and 13 papers in Aerospace Engineering. Recurrent topics in P.N. Collis's work include Ionosphere and magnetosphere dynamics (46 papers), Solar and Space Plasma Dynamics (26 papers) and Earthquake Detection and Analysis (26 papers). P.N. Collis is often cited by papers focused on Ionosphere and magnetosphere dynamics (46 papers), Solar and Space Plasma Dynamics (26 papers) and Earthquake Detection and Analysis (26 papers). P.N. Collis collaborates with scholars based in Sweden, Germany and United Kingdom. P.N. Collis's co-authors include M. T. Rietveld, I. Häggström, S. Kirkwood, J. K. Hargreaves, J.‐P. St.‐Maurice, T. Turunen, Esa Turunen, K. Kaila, Lennart Häggström and A. Korth and has published in prestigious journals such as Journal of Geophysical Research Atmospheres, Geophysical Research Letters and Planetary and Space Science.

In The Last Decade

P.N. Collis

47 papers receiving 698 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
P.N. Collis Sweden	16	813	414	187	150	114	47	831
M. J. Baron United States	17	897 1.1×	425 1.0×	225 1.2×	201 1.3×	141 1.2×	33	934
B. J. Watkins United States	17	836 1.0×	340 0.8×	196 1.0×	194 1.3×	192 1.7×	76	904
A. Huuskonen Finland	19	696 0.9×	300 0.7×	326 1.7×	163 1.1×	95 0.8×	42	785
J. P. S. Rash South Africa	9	668 0.8×	262 0.6×	227 1.2×	226 1.5×	51 0.4×	16	742
V. V. Belikovich Russia	14	566 0.7×	348 0.8×	113 0.6×	176 1.2×	76 0.7×	75	608
S. Ganguly United States	13	743 0.9×	280 0.7×	242 1.3×	170 1.1×	129 1.1×	39	769
K. Kaila Finland	18	799 1.0×	399 1.0×	91 0.5×	243 1.6×	81 0.7×	42	815
A. Senior United Kingdom	17	725 0.9×	378 0.9×	191 1.0×	123 0.8×	100 0.9×	53	775
C. LaHoz Germany	10	594 0.7×	218 0.5×	201 1.1×	80 0.5×	92 0.8×	10	608
M. P. Sulzer Puerto Rico	18	787 1.0×	261 0.6×	231 1.2×	80 0.5×	257 2.3×	33	833

Countries citing papers authored by P.N. Collis

Since Specialization

Citations

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

Fields of papers citing papers by P.N. Collis

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by P.N. Collis. 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 P.N. Collis. The network helps show where P.N. Collis may publish in the future.

Co-authorship network of co-authors of P.N. Collis

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

All Works

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20 of 20 papers shown

Collis, P.N.. (1997). An improved technique to determine neutral winds in the auroral mesosphere using the EISCAT VHF incoherent scatter radar. Journal of Atmospheric and Solar-Terrestrial Physics. 59(15). 1909–1918. 1 indexed citations

Rietveld, M. T., P.N. Collis, A. P. van Eyken, & U. P. Løvhaug. (1996). Coherent echoes during EISCAT UHF Common Programmes. Journal of Atmospheric and Terrestrial Physics. 58(1-4). 161–174. 25 indexed citations

Collis, P.N.. (1995). EISCAT data base for ionospheric modelling: F-region and topside ionosphere. Advances in Space Research. 16(1). 37–46. 14 indexed citations

Collis, P.N., M. T. Rietveld, & A. P. van Eyken. (1994). Dual-beam observations by the eiscat radars during PMSE conditions. Advances in Space Research. 14(9). 149–152. 3 indexed citations

Rietveld, M. T., P.N. Collis, & J.‐P. St.‐Maurice. (1991). Naturally enhanced ion acoustic waves in the auroral ionosphere observed with the EISCAT 933‐MHz radar. Journal of Geophysical Research Atmospheres. 96(A11). 19291–19305. 116 indexed citations

Collis, P.N. & M. T. Rietveld. (1990). Mesospheric observations with the EISCAT UHF radar during polar cap absorption events. I - Electron densities and negative ions. Annales Geophysicae. 8(12). 809–824. 20 indexed citations

Collis, P.N.. (1990). Multi-experiment studies of summertime sporadic E-layers using EISCAT. Advances in Space Research. 10(10). 109–112. 2 indexed citations

Wright, J. W., et al.. (1990). A comparison of plasma densities by EISCAT and the Dynasonde from auroral altitudes: evidence of intense structure. Journal of Atmospheric and Terrestrial Physics. 52(4). 289–303. 12 indexed citations

Kirkwood, S. & P.N. Collis. (1990). Reply to comments by B. R. Clemesha and D. M. Simonich on paper entitled “gravity wave generation of simultaneous auroral sporadic-E layers and sudden neutral sodium layers” by S. Kirkwood and P. N. Collis. Journal of Atmospheric and Terrestrial Physics. 52(1). 87–88. 1 indexed citations

10.

Häggström, I. & P.N. Collis. (1990). Ion composition changes during F-region density depletions in the presence of electric fields at auroral latitudes. Journal of Atmospheric and Terrestrial Physics. 52(6-8). 519–529. 35 indexed citations

11.

Collis, P.N. & S. Kirkwood. (1990). Discrete layers of D-region ionisation in the high-latitude ionosphere. Advances in Space Research. 10(10). 41–44. 4 indexed citations

12.

Kirkwood, S., et al.. (1989). Enhanced electron density layers in the high-latitude lower ionosphere. 291. 35–40. 2 indexed citations

13.

Collis, P.N. & I. Häggström. (1988). Plasma convection and auroral precipitation processes associated with the main ionospheric trough at high latitudes. Journal of Atmospheric and Terrestrial Physics. 50(4-5). 389–404. 62 indexed citations

14.

Collis, P.N., T. Turunen, & Esa Turunen. (1988). Evidence of heavy positive ions at the summer Arctic mesopause from the EISCAT UHF incoherent scatter radar. Geophysical Research Letters. 15(2). 148–151. 31 indexed citations

15.

Steen, Å., P.N. Collis, & I. Häggström. (1988). On the development of folds in auroral arcs. Journal of Atmospheric and Terrestrial Physics. 50(4-5). 301–313. 11 indexed citations

16.

Steen, Å. & P.N. Collis. (1988). High time-resolution imaging of auroral arc deformation at substorm onset. Planetary and Space Science. 36(7). 715–732. 12 indexed citations

17.

Collis, P.N., J. K. Hargreaves, A. Brekke, & A. Korth. (1986). Experimental determination of effective recombination rates in the disturbed high latitude lower ionosphere. Annales Geophysicae. 4. 211–217. 9 indexed citations

18.

Collis, P.N., J. K. Hargreaves, & A. Korth. (1984). Auroral radio absorption as an indicator of magnetospheric electrons and of conditions in the disturbed auroral D-region. Journal of Atmospheric and Terrestrial Physics. 46(1). 21–38. 26 indexed citations

19.

Collis, P.N. & A. Korth. (1983). Auroral radio absorption and the westward travelling surge. Planetary and Space Science. 31(11). 1373–1378. 7 indexed citations

20.

Collis, P.N., J. K. Hargreaves, & A. Korth. (1983). Loss cone fluxes and pitch angle diffusion at the equatorial plane during auroral radio absorption events. Journal of Atmospheric and Terrestrial Physics. 45(4). 231–243. 12 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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