Sigrid Close

2.0k citations

99 papers · 1.7k indexed · h-index 24

Impact in

Astronomy and Astrophysics top 2%
- Astro and Planetary Science
- Ionosphere and magnetosphere dynamics
- Planetary Science and Exploration
Geophysics top 10%
- Earthquake Detection and Analysis

Papers in ⓘ

Astronomy and Astrophysics 81
- Astro and Planetary Science 61
- Ionosphere and magnetosphere dynamics 55
- Planetary Science and Exploration 50
Aerospace Engineering 30
- GNSS positioning and interference 11
- Space Satellite Systems and Control 7

Co-authors: M. M. Oppenheim (20 shared papers)Stephen M. Hunt (12 shared papers)Nicolas Lee (23 shared papers)L. P. Dyrud (9 shared papers)Ashish Goel (15 shared papers)P. Colestock (12 shared papers)Alex Fletcher (7 shared papers)Peter Brown (4 shared papers)
Journals: Journal of Geophysical Research Atmospheres (8 papers)International Journal of Impact Engineering (8 papers)Icarus (7 papers)Radio Science (6 papers)Physics of Plasmas (5 papers)
Partner nations: United States Germany Canada

In The Last Decade

Sigrid Close

97 papers receiving 1.6k citations

Peers

Countries citing papers authored by Sigrid Close

Since Specialization

Citations

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

Fields of papers citing papers by Sigrid Close

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authors

The 25 scholars most cited alongside Sigrid Close, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Sigrid Close Line = papers co-authored together Sigrid Close links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 99 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Scattering characteristics of high‐resolution meteor head echoes detected at multiple frequencies Journal of Geophysical Research Atmospheres ·Sigrid Close, M. M. Oppenheim, Stephen M. Hunt, L. P. Dyrud	2002	108
2	Electromagnetic pulses generated by meteoroid impacts on spacecraft Journal of Geophysical Research Atmospheres ·Sigrid Close, P. Colestock, L. Cox, M. C. Kelley, Nicolas Lee	2010	70
3	Theory and experiments characterizing hypervelocity impact plasmas on biased spacecraft materials Physics of Plasmas ·Nicolas Lee, Sigrid Close, Ashish Goel, D. Lauben, I. R. Linscott, Theresa Johnson, David Strauss, S. Bugiel, A. Mocker, R. Srama	2013	69
4	A technique for calculating meteor plasma density and meteoroid mass from radar head echo scattering Icarus ·Sigrid Close, M. M. Oppenheim, Stephen M. Hunt, A. J. Coster	2004	68
5	Detection of electromagnetic pulses produced by hypervelocity micro particle impact plasmas Physics of Plasmas ·Sigrid Close, I. R. Linscott, Nicolas Lee, Theresa Johnson, David Strauss, Ashish Goel, Alexander Fletcher, D. Lauben, R. Srama, A. Mocker, S. Bugiel	2013	58
6	Measurements of freely-expanding plasma from hypervelocity impacts International Journal of Impact Engineering ·Nicolas Lee, Sigrid Close, D. Lauben, I. R. Linscott, Ashish Goel, Taylor K. Johnson, Jonathan Yee, Alex Fletcher, R. Srama, S. Bugiel, A. Mocker, P.L. Colestock, S. Green	2012	58
7	Determination of the meteoroid velocity distribution at the Earth using high-gain radar Icarus ·Stephen M. Hunt, M. M. Oppenheim, Sigrid Close, Peter Brown, F. M. McKeen, Michael Minardi	2003	58
8	Analysis of Perseid meteor head echo data collected using the Advanced Research Projects Agency Long‐Range Tracking and Instrumentation Radar (ALTAIR) Radio Science ·Sigrid Close, Stephen M. Hunt, Michael J. Minardi, F. M. McKeen	2000	57
9	Meteor head echo radar data: Mass–velocity selection effects Icarus ·Sigrid Close, Peter Brown, M. Campbell‐Brown, M. M. Oppenheim, P. Colestock	2006	56
10	Simulating plasma production from hypervelocity impacts Physics of Plasmas ·Alex Fletcher, Sigrid Close, Donovan Mathias	2015	49
11	Interpretation of non‐specular radar meteor trails Geophysical Research Letters ·L. P. Dyrud, M. M. Oppenheim, Sigrid Close, Stephen M. Hunt	2002	47
12	A comparison of detection sensitivity between ALTAIR and Arecibo meteor observations: Can high power and large aperture radars detect low velocity meteor head-echoes Icarus ·Diego Janches, Sigrid Close, J. T. Fentzke	2007	46
13	A new method for determining meteoroid mass from head echo data Journal of Geophysical Research Atmospheres ·Sigrid Close, M. M. Oppenheim, David Durand, L. P. Dyrud	2005	43
14	THE SOUTHERN ARGENTINA AGILE METEOR RADAR ORBITAL SYSTEM (SAAMER-OS): AN INITIAL SPORADIC METEOROID ORBITAL SURVEY IN THE SOUTHERN SKY The Astrophysical Journal ·Diego Janches, Sigrid Close, J. L. Hormaechea, Nimalan Swarnalingam, A. Murphy, D. O’Connor, Brenton G. W. Vandepeer, B. Fuller, D. C. Fritts, C. Brunini	2015	36
15	Impact-Induced ESD and EMI/EMP Effects on Spacecraft—A Review IEEE Transactions on Plasma Science ·Henry B. Garrett, Sigrid Close	2013	33
16	Remote sensing lower thermosphere wind profiles using non‐specular meteor echoes Geophysical Research Letters ·M. M. Oppenheim, Glenn Sugar, Nicholas O. Slowey, Elizabeth Bass, Jorge L. Chau, Sigrid Close	2009	33
17	Targeted Parameter Inflation within Ground-Based Augmentation Systems to Minimize Anomalous Ionospheric Impact Journal of Aircraft ·Jiwon Seo, Jiyun Lee, Sam Pullen, Per Enge, Sigrid Close	2012	30
18	Hypervelocity impact flash and plasma on electrically biased spacecraft surfaces International Journal of Impact Engineering ·Yayu M. Hew, Ashish Goel, Sigrid Close, Nicolas Lee	2018	29
19	Characterization of Leonid meteor head echo data collected using the VHF‐UHF Advanced Research Projects Agency Long‐Range Tracking and Instrumentation Radar (ALTAIR) Radio Science ·Sigrid Close, Stephen M. Hunt, F. M. McKeen, Michael J. Minardi	2002	28
20	The Meteoroid Input Function and predictions of mid-latitude meteor observations by the MU radar Icarus ·S. Pifko, Diego Janches, Sigrid Close, Jonathan Sparks, Takuji Nakamura, David Nesvorný	2013	27

About Sigrid Close

Sigrid Close is a scholar working on Astronomy and Astrophysics, Aerospace Engineering, Geophysics, Atmospheric Science and Nuclear and High Energy Physics, having authored 99 papers that have together received 1.7k indexed citations. Recurring topics across this work include Astro and Planetary Science (61 papers), Ionosphere and magnetosphere dynamics (55 papers), Planetary Science and Exploration (50 papers), GNSS positioning and interference (11 papers), Earthquake Detection and Analysis (10 papers), Laser-induced spectroscopy and plasma (8 papers), Space Satellite Systems and Control (7 papers) and Geology and Paleoclimatology Research (6 papers). The work is most often cited by research in Astronomy and Astrophysics (1.4k citations), Geophysics (210 citations), Aerospace Engineering (374 citations), Nuclear and High Energy Physics (136 citations) and Atmospheric Science (131 citations). Sigrid Close has collaborated with scholars based in United States, Germany and Canada. Frequent co-authors include M. M. Oppenheim, Stephen M. Hunt, Nicolas Lee, L. P. Dyrud, Ashish Goel, P. Colestock, Alex Fletcher, Peter Brown, Robert A. Marshall and Diego Janches. Their work appears in journals such as Journal of Geophysical Research Atmospheres, International Journal of Impact Engineering, Icarus, Radio Science and Physics of Plasmas.

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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