George Helffrich

5.9k total citations
109 papers, 4.5k citations indexed

About

George Helffrich is a scholar working on Geophysics, Molecular Biology and Astronomy and Astrophysics. According to data from OpenAlex, George Helffrich has authored 109 papers receiving a total of 4.5k indexed citations (citations by other indexed papers that have themselves been cited), including 96 papers in Geophysics, 5 papers in Molecular Biology and 5 papers in Astronomy and Astrophysics. Recurrent topics in George Helffrich's work include High-pressure geophysics and materials (81 papers), earthquake and tectonic studies (79 papers) and Geological and Geochemical Analysis (72 papers). George Helffrich is often cited by papers focused on High-pressure geophysics and materials (81 papers), earthquake and tectonic studies (79 papers) and Geological and Geochemical Analysis (72 papers). George Helffrich collaborates with scholars based in United Kingdom, Japan and United States. George Helffrich's co-authors include Satoshi Kaneshima, Craig R. Bina, Bernard J. Wood, James Wookey, I. D. Bastow, J. M. Kendall, Ricardo S. Ramalho, A. Lodge, Seth Stein and D. A. Thompson and has published in prestigious journals such as Nature, Science and Journal of Geophysical Research Atmospheres.

In The Last Decade

George Helffrich

106 papers receiving 4.3k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
George Helffrich United Kingdom 39 4.0k 374 304 213 169 109 4.5k
Carolina Lithgow‐Bertelloni United States 39 5.8k 1.4× 480 1.3× 292 1.0× 257 1.2× 172 1.0× 83 6.3k
Nicolas Coltice France 30 2.5k 0.6× 349 0.9× 233 0.8× 358 1.7× 245 1.4× 66 3.0k
R. D. van der Hilst United States 35 5.0k 1.2× 326 0.9× 144 0.5× 103 0.5× 161 1.0× 74 5.5k
Kouki Kitajima United States 30 1.7k 0.4× 621 1.7× 144 0.5× 204 1.0× 522 3.1× 134 2.8k
Eric Humler France 17 1.5k 0.4× 265 0.7× 112 0.4× 187 0.9× 225 1.3× 21 1.9k
S. J. Webb South Africa 26 2.4k 0.6× 176 0.5× 197 0.6× 77 0.4× 618 3.7× 100 2.9k
Michael P. Eddy United States 20 1.1k 0.3× 643 1.7× 100 0.3× 115 0.5× 301 1.8× 51 2.0k
Elizabeth Cottrell United States 34 4.1k 1.0× 404 1.1× 124 0.4× 328 1.5× 991 5.9× 100 4.6k
R. Pedersen Norway 33 2.6k 0.6× 607 1.6× 186 0.6× 101 0.5× 410 2.4× 82 3.5k
Yozo Hamano Japan 25 1.1k 0.3× 478 1.3× 655 2.2× 211 1.0× 58 0.3× 90 1.6k

Countries citing papers authored by George Helffrich

Since Specialization
Citations

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

Fields of papers citing papers by George Helffrich

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of George Helffrich

This figure shows the co-authorship network connecting the top 25 collaborators of George Helffrich. A scholar is included among the top collaborators of George Helffrich 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 George Helffrich. George Helffrich 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.
Hirose, Kei, G. Morard, Ryosuke Sinmyo, et al.. (2017). Crystallization of silicon dioxide and compositional evolution of the Earth’s core. Nature. 543(7643). 99–102. 170 indexed citations
2.
Helffrich, George. (2017). A finite strain approach to thermal expansivity’s pressure dependence. American Mineralogist. 102(8). 1690–1695. 4 indexed citations
3.
Hirose, Kei, G. Morard, J. W. Hernlund, George Helffrich, & Haruka Ozawa. (2015). Crystallization in Earth's Core after High-Temperature Core Formation. AGUFM. 2015. 2 indexed citations
4.
Ramalho, Ricardo S., George Helffrich, M. A. Cosca, et al.. (2014). The emergence and evolution of Santa Maria Island (Azores) - the conundrum of uplifting islands revisited. AGU Fall Meeting Abstracts. 2014. 7 indexed citations
5.
Domingues, Ana Patrícia, et al.. (2013). MOZART - A seismological investigation of Central Mozambique. EGU General Assembly Conference Abstracts. 1 indexed citations
6.
Helffrich, George. (2013). Geology: The maverick founder of modern seismology. Nature. 504(7479). 216–217. 1 indexed citations
7.
Helffrich, George. (2012). How light element addition can lower core liquid wave speeds. Geophysical Journal International. 188(3). 1065–1070. 22 indexed citations
8.
Al-Lazki, A., C. J. Ebinger, J. M. Kendall, et al.. (2011). Upper mantle anisotropy of southeast Arabia passive margin [Gulf of Aden northern conjugate margin], Oman. Arabian Journal of Geosciences. 5(5). 925–934. 7 indexed citations
9.
Helffrich, George & Satoshi Kaneshima. (2010). Outer-core compositional stratification from observed core wave speed profiles. Nature. 468(7325). 807–810. 149 indexed citations
10.
Thomas, Christine, J. M. Kendall, & George Helffrich. (2009). Probing two low-velocity regions withPKPb-caustic amplitudes and scattering. Geophysical Journal International. 178(1). 503–512. 25 indexed citations
11.
Wookey, James & George Helffrich. (2008). Inner-core shear-wave anisotropy and texture from an observation of PKJKP waves. Nature. 454(7206). 873–876. 44 indexed citations
12.
Knapp, J. H., et al.. (2005). Integration of Passive and Active Source Seismology: Mapping Lithospheric Structure Beneath Scotland. AGU Fall Meeting Abstracts. 2005. 1 indexed citations
13.
14.
Helffrich, George, Douglas A. Wiens, E. Vera, et al.. (2002). A teleseismic shear-wave splitting study to investigate mantle flow around South America and implications for plate-driving forces. Geophysical Journal International. 149(1). F1–F7. 28 indexed citations
15.
Helffrich, George & Bernard J. Wood. (2001). The Earth's mantle. Nature. 412(6846). 501–507. 286 indexed citations
16.
Helffrich, George, et al.. (1999). Teleseismic shear wave splitting measurements in noisyenvironments. Geophysical Journal International. 137(3). 821–830. 75 indexed citations
17.
Helffrich, George. (1998). The elusive coldfinger. Nature. 395(6698). 119–120. 4 indexed citations
18.
Helffrich, George. (1996). GEBCO DIGITAL ATLAS. Terra Nova. 8(6). 659–661. 26 indexed citations
19.
Helffrich, George & John P. Brodholt. (1991). Relationship of deep seismicity to the thermal structure of subducted lithosphere. Nature. 353(6341). 252–255. 39 indexed citations
20.
Helffrich, George & Bernard J. Wood. (1989). Subregular model for multicomponent solutions. American Mineralogist. 74. 1016–1022. 39 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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