P. E. Hare

6.5k citations

77 papers · 5.7k · 2 hit papers · h-index 34

Impact in

Paleontology top 0.5%
- Archaeology and ancient environmental studies
- Paleontology and Stratigraphy of Fossils
Atmospheric Science top 5%
- Geology and Paleoclimatology Research

Papers in

Paleontology 31
- Archaeology and ancient environmental studies 22
- Paleontology and Stratigraphy of Fossils 12
Astronomy and Astrophysics 20
- Astro and Planetary Science 13
- Origins and Evolution of Life 11
- Planetary Science and Exploration 9

Co-authors: Marilyn L. Fogel (3 shared papers)Thomas C. Hoering (3 shared papers)Stephen A. Macko (2 shared papers)E. Gil‐Av (2 shared papers)Thomas W. Stafford (3 shared papers)Noreen Tuross (2 shared papers)John I. Hedges (1 shared paper)Alva D. Mitchell (1 shared paper)
Journals: Geochimica et Cosmochimica Acta (10 papers)Science (7 papers)Origins of Life and Evolution of Biospheres (5 papers)Radiocarbon (4 papers)Analytical Biochemistry (3 papers)
Partner nations: United States Japan South Africa

In The Last Decade

P. E. Hare

76 papers receiving 5k citations

P. E. Hare's Hit Papers

align trajectories log scale

Isotopic fractionation of nitrogen and carbon in the synthesis of amino acids by microorganisms 1987 · 488 citations

What are hit papers?

Paper score: A paper's citations measured against the top-1% bar of its own field and year: the square root of citations ÷ bar, so 1 means right at the bar and 2 means four times its citations. The bar blends the citation counts that enter the top 1% of the paper's subfields in its year (weighted 89.5%), of those subfields over all years (0.5%) and of its year across all fields (10%); a subfield and year with fewer than 400 papers takes its year's bar. Papers from 2026 are not scored yet: in an unfinished year, when a paper appeared matters more than how it is cited.

Hit paper: A paper cited at least 1.5× the top-1% bar of its field and year: a paper score of at least √1.5.

1987 Chemical Geology Isotope Geoscience section
1975 Proceedings of the National Academy of Sciences

Peers

Countries citing papers authored by P. E. Hare

Since Specialization

Citations

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

Fields of papers citing papers by P. E. Hare

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authors

The 25 scholars most cited alongside P. E. Hare, 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 P. E. Hare Line = papers co-authored together P. E. Hare 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 77 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	O-phthalaldehyde: fluorogenic detection of primary amines in the picomole range. Comparison with fluorescamine and ninhydrin. Proceedings of the National Academy of Sciences ·P. E. Hare +1 other Hit paper breakdown →	1975	676
2	Isotopic fractionation of nitrogen and carbon in the synthesis of amino acids by microorganisms Chemical Geology Isotope Geoscience section ·Stephen A. Macko, Marilyn L. Fogel, P. E. Hare, Thomas C. Hoering Hit paper breakdown →	1987	488
3	The isotopic composition of carbon and nitrogen in individual amino acids isolated from modern and fossil proteins Journal of Archaeological Science ·P. E. Hare, Marilyn L. Fogel, Thomas W. Stafford, Alva D. Mitchell, Thomas C. Hoering	1991	458
4	Kinetic fractionation of stable nitrogen isotopes during amino acid transamination Geochimica et Cosmochimica Acta ·Stephen A. Macko, Marilyn L.F. Estep, Michael Engel, P. E. Hare	1986	362
5	Effects of diagenesis on strontium, carbon, nitrogen and oxygen concentration and isotopic composition of bone Geochimica et Cosmochimica Acta ·Bruce K. Nelson, Michael J. DeNiro, Margaret J. Schoeninger, Donald J De Paolo, P. E. Hare	1986	281
6	Accelerator radiocarbon dating at the molecular level Journal of Archaeological Science ·Thomas W. Stafford, P. E. Hare, Lloyd A. Currie, A. J. T. Jull, Douglas J. Donahue	1991	224
7	Variability in the preservation of the isotopic composition of collagen from fossil bone Geochimica et Cosmochimica Acta ·Noreen Tuross, Marilyn L. Fogel, P. E. Hare	1988	212
8	Separation of D and L Amino Acids by Liquid Chromatography: Use of Chiral Eluants Science ·P. E. Hare, E. Gil‐Av	1979	210
9	Amino acid adsorption by clay minerals in distilled water Geochimica et Cosmochimica Acta ·John I. Hedges, P. E. Hare	1987	188
10	Resolution of underivatized amino acids by reversed-phase chromatography Journal of the American Chemical Society ·E. Gil‐Av, Arye Tishbee, P. E. Hare	1980	182
11	Amino Acids in the Proteins from Aragonite and Calcite in the Shells of Mytilus californianus Science ·P. E. Hare	1963	145
12	Racemization of Amino Acids in Marine Sediments Science ·John F. Wehmiller, P. E. Hare	1971	122
13	Earliest modern humans in southern Africa dated by isoleucine epimerization in ostrich eggshell Quaternary Science Reviews ·Gifford Hubbs Miller, Peter B. Beaumont, H. J. Deacon, Alison S. Brooks, P. E. Hare, A. J. T. Jull	1999	118
14	Molecular preservation and crystallographic alterations in a weathering sequence of wildebeest bones Applied Geochemistry ·Noreen Tuross, Anna K. Behrensmeyer, Edward David Eanes, Larry W. Fisher, P. E. Hare	1989	117
15	Dating Pleistocene Archeological Sites by Protein Diagenesis in Ostrich Eggshell Science ·Alison S. Brooks, P. E. Hare, Julie E. Kokis, Gifford Hubbs Miller, R. D. Ernst, Fred Wendorf	1990	117
16	Rapid analysis of discrete samples: The use of nonsegmented, continuous flow Analytical Biochemistry ·Kent K. Stewart, Gary R. Beecher, P. E. Hare	1976	109
17	A glacio-isostatic facies model and amino acid stratigraphy for late Quaternary events in Spitsbergen and the Arctic Nature ·Geoffrey Stewart Boulton, Christopher T. Baldwin, J. D. Peacock, Anne McCabe, Gifford Hubbs Miller, Jack Jarvis, B. Horsefield, Peter R. Worsley	1982	102
18	[1] Subnanomole-range amino acid analysis Methods in enzymology on CD-ROM/Methods in enzymology ·P. E. Hare	1977	97
19	Amino acid geochronology of raised beaches in south west Britain Quaternary Science Reviews ·D. Q. Bowen, GERALD A. SYKES, Gifford Hubbs Miller, John Thomas Andrews, J.S. Brew, P. E. Hare +1 other	1985	92
20	The enantiomeric analysis of a mixture of all common protein amino acids by high-performance liquid chromatography using a new chiral mobile phase Analytical Biochemistry ·Shulamith Weinstein, P. E. Hare +1 other	1982	88

About P. E. Hare

P. E. Hare is a scholar working on Paleontology, Astronomy and Astrophysics, Spectroscopy, Biomaterials and Atmospheric Science, having authored 77 papers that have together received 5.7k indexed citations. Recurring topics across this work include Archaeology and ancient environmental studies (22 papers), Astro and Planetary Science (13 papers), Analytical Chemistry and Chromatography (13 papers), Paleontology and Stratigraphy of Fossils (12 papers), Origins and Evolution of Life (11 papers), Planetary Science and Exploration (9 papers), Geology and Paleoclimatology Research (9 papers) and Calcium Carbonate Crystallization and Inhibition (6 papers). The work is most often cited by research in Paleontology (1.8k citations), Atmospheric Science (668 citations), Spectroscopy (736 citations), Ecology (1k citations) and Oceanography (415 citations). P. E. Hare has collaborated with scholars based in United States, Japan and South Africa. Frequent co-authors include Marilyn L. Fogel, Thomas C. Hoering, Stephen A. Macko, E. Gil‐Av, Thomas W. Stafford, Noreen Tuross, John I. Hedges, Alva D. Mitchell, Marilyn L.F. Estep and Michael Engel. Their work appears in journals such as Geochimica et Cosmochimica Acta, Science, Origins of Life and Evolution of Biospheres, Radiocarbon and Analytical Biochemistry.

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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