Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies
if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the
same subfield and year (this is the minimum needed to enter the top 1%, not the average
within it), or reaches the top citation threshold in at least one of its specific research
topics.
238U234U230Th232Th systematics and the precise measurement of time over the past 500,000 years
19871.0k citationsR. Lawrence Edwards, J. H. Chen et al.Earth and Planetary Science Lettersprofile →
Peers — A (Enhanced Table)
Peers by citation overlap · career bar shows stage (early→late)
cites ·
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This map shows the geographic impact of J. H. Chen'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 J. H. Chen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites J. H. Chen more than expected).
This network shows the impact of papers produced by J. H. Chen. 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 J. H. Chen. The network helps show where J. H. Chen may publish in the future.
Co-authorship network of co-authors of J. H. Chen
This figure shows the co-authorship network connecting the top 25 collaborators of J. H. Chen.
A scholar is included among the top collaborators of J. H. Chen 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 J. H. Chen. J. H. Chen is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
All Works
19 of 19 papers shown
1.
Chen, J. H., D. A. Papanastassiou, & G. J. Wasserburg. (2002). Re-Os Isotope Systematics in Lunar Soils and Breccias. 1818.3 indexed citations
2.
Papanastassiou, D. A., J. H. Chen, & G. J. Wasserburg. (2002). What Whole Rock Samples of Portales Valley Can and Cannot Tell Us. Lunar and Planetary Science Conference. 1826.2 indexed citations
3.
Papanastassiou, D. A., J. H. Chen, & G. J. Wasserburg. (2001). Chronology and Composition Puzzles in Portales Valley. Lunar and Planetary Science Conference. 1476.2 indexed citations
4.
Chen, J. H., D. A. Papanastassiou, & G. J. Wasserburg. (2001). Re-Os in Lunar Soils and Meteoritic Siderophiles on the Lunar Surface.1 indexed citations
5.
Chen, J. H., D. A. Papanastassiou, & G. J. Wasserburg. (2000). Comparative FeNi and Silicate Chronology in Portales Valley. Lunar and Planetary Science Conference. 1507.2 indexed citations
6.
Chen, J. H., D. A. Papanastassiou, & G. J. Wasserburg. (1998). Re-Os Systematics in Ordinary Chondrites and Acapulco. LPI. 1663.1 indexed citations
7.
Chen, J. H., D. A. Papanastassiou, & G. J. Wasserburg. (1998). Re-Os systematics in chondrites. Chinese Science Bulletin. 43(S1). 22–22.
Edwards, R. Lawrence, J. H. Chen, & G. J. Wasserburg. (1987). 238U234U230Th232Th systematics and the precise measurement of time over the past 500,000 years. Earth and Planetary Science Letters. 81(2-3). 175–192.1023 indexed citations breakdown →
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.