John M. Zachara

30.8k citations

265 papers · 23.3k indexed · 7 hit papers · h-index 86

Geochemistry and Petrology top 0.02%
- Geochemistry and Elemental Analysis 38
Environmental Engineering top 0.01%
- Groundwater flow and contamination studies 71
- Microbial Fuel Cells and Bioremediation 55
Inorganic Chemistry top 0.05%
- Radioactive element chemistry and processing 110
Environmental Chemistry top 0.05%
- Mine drainage and remediation techniques 29
Radiological and Ultrasound Technology top 0.05%
Renewable Energy, Sustainability and the Environment
- Iron oxide chemistry and applications 33
Global and Planetary Change
- Radioactive contamination and transfer 32
Artificial Intelligence
- Geochemistry and Geologic Mapping 24

Co-authors: James K. Fredrickson Chongxuan Liu Steven C. Smith John F. McCarthy Liang Shi David W. Kennedy Charles T. Resch Eric Roden
Cited by: Geochemistry and Petrology Environmental Engineering Inorganic Chemistry
Partner nations: United States United Kingdom China

In The Last Decade

John M. Zachara

262 papers receiving 22.4k citations

Hit Papers

7 papers align trajectories log scale

What are hit papers?

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.

2007 Respiration of metal (hydr)oxides by Shewanella and Geobacter: a key role for multihaem c‐type cytochromes
1998 Metal Oxide Surfaces and Their Interactions with Aqueous Solutions and Microbial Organisms
1998 Biogenic iron mineralization accompanying the dissimilatory reduction of hydrous ferric oxide by a groundwater bacterium
1996 Microbial Reduction of Crystalline Iron(III) Oxides: Influence of Oxide Surface Area and Potential for Cell Growth
1990 Influence of mineral-bound humic substances on the sorption of hydrophobic organic compounds
1989 Environmental chemistry of chromium
1989 Subsurface transport of contaminants

Peers

Countries citing papers authored by John M. Zachara

Since Specialization

Citations

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

Fields of papers citing papers by John M. Zachara

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by John M. Zachara. 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 John M. Zachara. The network helps show where John M. Zachara may publish in the future.

Co-authorship network

The 25 scholars most cited alongside John M. Zachara, 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 John M. Zachara Line = papers co-authored together John M. Zachara links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

#	Work
1	Using Ensemble Data Assimilation to Estimate Transient Hydrologic Exchange Flow Under Highly Dynamic Flow Conditions Kewei Chen,Xingyuan Chen,Xuehang Song,Martin A. Briggs,Peishi Jiang,Pin Shuai,Glenn Hammond,Hongbin Zhan,John M. Zachara	2022	19
2	Kilometer‐Scale Hydrologic Exchange Flows in a Gravel Bed River Corridor and Their Implications to Solute Migration John M. Zachara,Xingyuan Chen,Xuehang Song,Pin Shuai,Chris Murray,Charles T. Resch	2020	16
3	River Dynamics Control Transit Time Distributions and Biogeochemical Reactions in a Dam‐Regulated River Corridor Xuehang Song,Xingyuan Chen,John M. Zachara,J. D. Gomez‐Velez,Pin Shuai,Huiying Ren,Glenn Hammond	2020	16
4	Dam Operations and Subsurface Hydrogeology Control Dynamics of Hydrologic Exchange Flows in a Regulated River Reach Pin Shuai,Xingyuan Chen,Xuehang Song,Glenn Hammond,John M. Zachara,Patrick Royer,Huiying Ren,William Perkins,Marshall C. Richmond,Maoyi Huang	2019	41
5	Delineating Facies Spatial Distribution by Integrating Ensemble Data Assimilationand Indicator Geostatistics With Level‐Set Transformation Xuehang Song,Xingyuan Chen,Ming Ye,Zhenxue Dai,Glenn Hammond,John M. Zachara	2019	24
6	Using Bayesian Networks for Sensitivity Analysis of Complex Biogeochemical Models Heng Dai,Xingyuan Chen,Ming Ye,Xuehang Song,Glenn Hammond,Bill X. Hu,John M. Zachara	2019	31
7	Influences of organic carbon speciation on hyporheic corridor biogeochemistry and microbial ecology James Stegen,T. C. Johnson,James K. Fredrickson,Michael J. Wilkins,Allan Konopka,William Nelson,Evan Arntzen,William Chrisler,Rosalie Chu,Sarah Fansler,Emily Graham,David W. Kennedy,Charles T. Resch,Malak Tfaily,John M. Zachara	2018	128
8	Drought Conditions Maximize the Impact of High‐Frequency Flow Variations on Thermal Regimes and Biogeochemical Function in the Hyporheic Zone Xuehang Song,Xingyuan Chen,James Stegen,Glenn Hammond,Hyun‐Seob Song,Heng Dai,Emily Graham,John M. Zachara	2018	59
9	Riverbed Hydrologic Exchange Dynamics in a Large Regulated River Reach Tian Zhou,Jie Bao,Maoyi Huang,Zhangshuan Hou,Evan Arntzen,Xuehang Song,Samuel Harding,P. Scott Titzler,Huiying Ren,Christopher Murray,William Perkins,Xingyuan Chen,James Stegen,Glenn Hammond,Paul D. Thorne,John M. Zachara	2018	19
10	Geochemical and Microbial Community Attributes in Relation to Hyporheic Zone Geological Facies Zhangshuan Hou,William Nelson,James Stegen,Chris Murray,Evan Arntzen,Alex R. Crump,David W. Kennedy,M. C. Perkins,Tim Scheibe,Jim Fredrickson,John M. Zachara	2017	39
11	A geostatistics‐informed hierarchical sensitivity analysis method for complex groundwater flow and transport modeling Heng Dai,Xingyuan Chen,Ming Ye,Xuehang Song,John M. Zachara	2017	36
12	Dynamic Kinetics of Nitrogen Cycle in Groundwater-Surface Water Interaction Zone at Hanford Site Ying Liu,C. Liu,Fangfei Xu,Aifen Lin Wei Hua Yan,Liang Shi,John M. Zachara,Yu Gao,Weijun Qian,William M. Nelson,J. K. Fredrickson,Lexuan Zhong,Craig R. Thompson	2015	1
13	Structure of a bacterial cell surface decaheme electron conduit Thomas A. Clarke,Marcus J. Edwards,Andrew J. Gates,Andrea Hall,Gaye F. White,Justin M. Bradley,Catherine L. Reardon,Liang Shi,Alexander S. Beliaev,Matthew J. Marshall,Zhe-Ming Wang,Nicholas J. Watmough,James K. Fredrickson,John M. Zachara,Julea N. Butt,David J. Richardson	2011	272
14	River Induced Wellbore Flow Dynamics in Long-Screen Wells and their Impact on Aqueous Sampling Results Vincent R. Vermeul,James P. McKinley,D.R. Newcomer,Blaine Gabriel Fritz,Robert Mackley,John M. Zachara	2010	2
15	Characterization of an electron conduit between bacteria and the extracellular environment Robert S. Hartshorne,Catherine L. Reardon,Daniel E. Ross,Jochen Nuester,Thomas A. Clarke,Andrew J. Gates,Paul C. Mills,Jim Fredrickson,John M. Zachara,Liang Shi,Alex Beliaev,Matthew J. Marshall,Ming Tien,Susan L. Brantley,Julea N. Butt,David J. Richardson	2009	372
16	Advective Removal of Intraparticle\nUranium from Contaminated Vadose\nZone Sediments, Hanford, U.S. Eugene S. Ilton,Nikolla Qafoku,Chongxuan Liu,Dean A. Moore,John M. Zachara	2008	24
17	Biogeochemical redox transformations of technetium-99 in Hanford and Oak Ridge sediments Andrew E. Plymale,Jim Fredrickson,John M. Zachara,David W. Kennedy,Ravi Kukkadapu,A. C. Dohnalkova	2005	1
18	X-ray Spectroscopic Investigation of the Distribution and Speciation of Uranium in Contaminated Sediments From the DOE's Hanford Site Jeffrey G. Catalano,John M. Zachara,S. M. Heald,G. E. Brown	2002	1
19	Kinetic Analysis of the Bacterial\nReduction of Goethite Chongxuan Liu,John M. Zachara,(unknown),Cynthia K. Brinkman	2001	177
20	Influence of mineral bound humic acids on the sorption of hydrophobic organic compounds Ellyn M. Murphy,John M. Zachara,S. C. Smith	1990	1

About John M. Zachara

John M. Zachara is a scholar working on Geochemistry and Petrology, Environmental Engineering and Inorganic Chemistry, having authored 265 papers that have together received 23.3k indexed citations. Recurring topics across this work include Radioactive element chemistry and processing (110 papers), Groundwater flow and contamination studies (71 papers), Microbial Fuel Cells and Bioremediation (55 papers), Geochemistry and Elemental Analysis (38 papers), Iron oxide chemistry and applications (33 papers), Radioactive contamination and transfer (32 papers), Mine drainage and remediation techniques (29 papers) and Geochemistry and Geologic Mapping (24 papers). The work is most often cited by research in Geochemistry and Petrology (4.3k citations), Environmental Engineering (8.7k citations) and Inorganic Chemistry (7.0k citations). John M. Zachara has collaborated with scholars based in United States, United Kingdom and China. Frequent co-authors include James K. Fredrickson, Chongxuan Liu, Steven C. Smith, John F. McCarthy, Liang Shi, David W. Kennedy, Charles T. Resch, Eric Roden, James P. McKinley and Zhe-Ming Wang.

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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