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Company · Pasadena · United States

Tetra Tech (United States)

In research, Tetra Tech (United States) stands highest in Physical Sciences (#6,331 of 10,670 worldwide), 2022-now.

tetratech.comROR OpenAlex
World rank, 2022-now
#11,552
of 22,385 · #13,859 all time
Rank in United States
#1,610
of 3,332
Research works
1.3k
▲ 39% vs 2018-21
Citations
19k
14.8 per fractional work
Top-10% rate
7.9%
all institutions 10.0%
vs its own fields
0.91×
1.00× is exactly expected
Open access
29%
world 40%
International
19%
world 18%
Tetra Tech (United States)

What is Tetra Tech (United States) known for in research?

The fields where it stands highest, 2022-now, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorksAll time
Physical SciencesDomain #6,331 of 10,670 7.5%122 #8820

Each strip is that field's whole ranked pool, with the notch where Tetra Tech (United States) sits in it, in the colour of the band that rank falls in. The track under the rate is the rate itself: it carries no average mark, because the average differs by field (from about 6% in Dentistry to 21% in Economics).

Which fields of science does Tetra Tech (United States) work in?

In 2022-now, 68% of research at Tetra Tech (United States) is in Physical Sciences, 15% in Social Sciences. Its largest fields are Engineering (24%), Environmental Science (19%), Computer Science (9%). It does 1.7× the world's share of Physical Sciences.

Physical Sciences: 144 fractional works · 67.6% of its workEngineering: 52 fractional works · 24.2% of its workCivil and Structural Engineering: 11 fractional works · 5.2% of its workElectrical and Electronic Engineering: 8 fractional works · 3.8% of its workOcean Engineering: 6 fractional works · 2.8% of its workMechanical Engineering: 5 fractional works · 2.3% of its workAerospace Engineering: 4 fractional works · 1.7% of its workAutomotive Engineering: 3 fractional works · 1.5% of its workMechanics of Materials: 3 fractional works · 1.4% of its workBiomedical Engineering: 3 fractional works · 1.3% of its workSafety, Risk, Reliability and Quality: 2 fractional works · 1.2% of its workBuilding and Construction: 2 fractional works · 1.0% of its workIndustrial and Manufacturing Engineering: 2 fractional works · 0.9% of its workControl and Systems Engineering: 1 fractional works · 0.7% of its workComputational Mechanics: 1 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.2% of its workEnvironmental Science: 41 fractional works · 19.1% of its workEcology: 7 fractional works · 3.4% of its workEnvironmental Engineering: 7 fractional works · 3.1% of its workGlobal and Planetary Change: 6 fractional works · 2.9% of its workWater Science and Technology: 6 fractional works · 2.8% of its workEnvironmental Chemistry: 5 fractional works · 2.3% of its workHealth, Toxicology and Mutagenesis: 3 fractional works · 1.6% of its workManagement, Monitoring, Policy and Law: 2 fractional works · 1.0% of its workPollution: 2 fractional works · 0.8% of its workNature and Landscape Conservation: 1 fractional works · 0.6% of its workIndustrial and Manufacturing Engineering: 1 fractional works · 0.6% of its workSmaller subfields together: 0 fractional works · 0.1% of its workComputer Science: 20 fractional works · 9.3% of its workArtificial Intelligence: 11 fractional works · 5.0% of its workInformation Systems: 3 fractional works · 1.6% of its workComputer Vision and Pattern Recognition: 2 fractional works · 0.9% of its workComputer Networks and Communications: 2 fractional works · 0.8% of its workSignal Processing: 1 fractional works · 0.3% of its workComputational Theory and Mathematics: 0 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 0.5% of its workEarth and Planetary Sciences: 20 fractional works · 9.3% of its workGeophysics: 7 fractional works · 3.4% of its workOceanography: 5 fractional works · 2.3% of its workGeochemistry and Petrology: 3 fractional works · 1.2% of its workAtmospheric Science: 2 fractional works · 1.1% of its workGeology: 1 fractional works · 0.6% of its workEarth-Surface Processes: 1 fractional works · 0.5% of its workPaleontology: 0 fractional works · 0.2% of its workMaterials Science: 5 fractional works · 2.4% of its workMaterials Chemistry: 2 fractional works · 0.7% of its workGeneral Materials Science: 1 fractional works · 0.5% of its workBiomaterials: 1 fractional works · 0.5% of its workPolymers and Plastics: 1 fractional works · 0.3% of its workSmaller subfields together: 1 fractional works · 0.3% of its workChemistry: 2 fractional works · 0.9% of its workOrganic Chemistry: 1 fractional works · 0.3% of its workAnalytical Chemistry: 0 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 0.4% of its workEnergy: 2 fractional works · 0.9% of its workRenewable Energy, Sustainability and the Environment: 2 fractional works · 0.8% of its workSmaller subfields together: 0 fractional works · 0.1% of its workPhysics and Astronomy: 2 fractional works · 0.9% of its workChemical Engineering: 1 fractional works · 0.6% of its workMathematics: 0 fractional works · 0.1% of its workSocial Sciences: 32 fractional works · 15.1% of its workSocial Sciences: 18 fractional works · 8.6% of its workSociology and Political Science: 5 fractional works · 2.2% of its workSafety Research: 3 fractional works · 1.4% of its workPolitical Science and International Relations: 3 fractional works · 1.3% of its workEducation: 2 fractional works · 1.0% of its workLaw: 2 fractional works · 0.8% of its workAnthropology: 1 fractional works · 0.5% of its workTransportation: 1 fractional works · 0.4% of its workDemography: 1 fractional works · 0.3% of its workCultural Studies: 1 fractional works · 0.3% of its workSmaller subfields together: 1 fractional works · 0.5% of its workBusiness, Management and Accounting: 5 fractional works · 2.2% of its workAccounting: 2 fractional works · 0.8% of its workManagement of Technology and Innovation: 1 fractional works · 0.4% of its workStrategy and Management: 1 fractional works · 0.4% of its workOrganizational Behavior and Human Resource Management: 1 fractional works · 0.3% of its workManagement Information Systems: 1 fractional works · 0.3% of its workSmaller subfields together: 0 fractional works · 0.1% of its workPsychology: 3 fractional works · 1.4% of its workDevelopmental and Educational Psychology: 1 fractional works · 0.4% of its workApplied Psychology: 1 fractional works · 0.4% of its workExperimental and Cognitive Psychology: 0 fractional works · 0.2% of its workSmaller subfields together: 1 fractional works · 0.4% of its workDecision Sciences: 2 fractional works · 1.0% of its workManagement Science and Operations Research: 1 fractional works · 0.7% of its workStatistics, Probability and Uncertainty: 1 fractional works · 0.4% of its workEconomics, Econometrics and Finance: 2 fractional works · 1.0% of its workEconomics and Econometrics: 1 fractional works · 0.6% of its workSmaller subfields together: 1 fractional works · 0.3% of its workArts and Humanities: 2 fractional works · 0.9% of its workLanguage and Linguistics: 1 fractional works · 0.3% of its workSmaller subfields together: 1 fractional works · 0.6% of its workLife Sciences: 20 fractional works · 9.5% of its workAgricultural and Biological Sciences: 9 fractional works · 4.3% of its workEcology, Evolution, Behavior and Systematics: 2 fractional works · 0.8% of its workFood Science: 2 fractional works · 0.8% of its workSoil Science: 1 fractional works · 0.6% of its workGeneral Agricultural and Biological Sciences: 1 fractional works · 0.6% of its workPlant Science: 1 fractional works · 0.5% of its workAnimal Science and Zoology: 1 fractional works · 0.4% of its workForestry: 0 fractional works · 0.2% of its workAquatic Science: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.2% of its workBiochemistry, Genetics and Molecular Biology: 7 fractional works · 3.2% of its workMolecular Biology: 3 fractional works · 1.6% of its workCell Biology: 1 fractional works · 0.5% of its workDevelopmental Biology: 1 fractional works · 0.4% of its workGenetics: 1 fractional works · 0.3% of its workSmaller subfields together: 1 fractional works · 0.3% of its workNeuroscience: 2 fractional works · 1.0% of its workCognitive Neuroscience: 1 fractional works · 0.7% of its workSmaller subfields together: 1 fractional works · 0.3% of its workImmunology and Microbiology: 2 fractional works · 0.8% of its workApplied Microbiology and Biotechnology: 1 fractional works · 0.5% of its workImmunology: 1 fractional works · 0.3% of its workPharmacology, Toxicology and Pharmaceutics: 0 fractional works · 0.2% of its workHealth Sciences: 17 fractional works · 7.9% of its workMedicine: 11 fractional works · 5.3% of its workPulmonary and Respiratory Medicine: 2 fractional works · 1.0% of its workAnatomy: 1 fractional works · 0.5% of its workSurgery: 1 fractional works · 0.4% of its workOncology: 1 fractional works · 0.3% of its workPublic Health, Environmental and Occupational Health: 1 fractional works · 0.3% of its workUrology: 1 fractional works · 0.3% of its workPhysiology: 1 fractional works · 0.3% of its workPediatrics, Perinatology and Child Health: 1 fractional works · 0.2% of its workNeurology: 1 fractional works · 0.2% of its workInfectious Diseases: 0 fractional works · 0.2% of its workRadiology, Nuclear Medicine and Imaging: 0 fractional works · 0.2% of its workSmaller subfields together: 3 fractional works · 1.3% of its workHealth Professions: 5 fractional works · 2.2% of its workSpeech and Hearing: 2 fractional works · 1.1% of its workGeneral Health Professions: 2 fractional works · 0.8% of its workOccupational Therapy: 0 fractional works · 0.2% of its workSmaller subfields together: 0 fractional works · 0.1% of its workNursing: 1 fractional works · 0.3% of its workNutrition and Dietetics: 1 fractional works · 0.3% of its workALL ITS WORKTetra Tech(United States)213fractional works, 2022-now
Life Sciences9%Physical Sciences68%Health Sciences8%Social Sciences15%

Each ring splits the one inside it: the four domains of science, their fields, their subfields. Size is fractional works in 2022-now. Every slice is a page; the interactive view zooms down to single topics and colours each by how much more of it this institution does than the world.

Its 4 domains and 24 fields, with their numbers
    1. Engineering5224.2%
    2. Environmental Science4119.1%
    3. Computer Science209.3%
    4. Earth and Planetary Sciences209.3%
    5. Materials Science52.4%
    6. Chemistry20.9%
    7. Energy20.9%
    8. Physics and Astronomy20.9%
    9. Chemical Engineering10.6%
    10. Mathematics00.1%
    1. Social Sciences188.6%
    2. Business, Management and Accounting52.2%
    3. Psychology31.4%
    4. Decision Sciences21.0%
    5. Economics, Econometrics and Finance21.0%
    6. Arts and Humanities20.9%
    1. Agricultural and Biological Sciences94.3%
    2. Biochemistry, Genetics and Molecular Biology73.2%
    3. Neuroscience21.0%
    4. Immunology and Microbiology20.8%
    5. Pharmacology, Toxicology and Pharmaceutics00.2%
    1. Medicine115.3%
    2. Health Professions52.2%
    3. Nursing10.3%
All of science, and how each field's share has moved since 1950: the Science domain explorer

Field profile

Location quotient across every field it publishes in: outside the ring is more than an institution of this size would be expected to publish, inside it is less.

Agricultural and Biological Sciences: 0.91× its world share, 9 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.60× its world share, 7 worksBiochemistry, Geneti…Immunology and Microbiology: 0.76× its world share, 2 worksImmunology and Micro…Neuroscience: 0.61× its world share, 2 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 0.57× its world share, 0 worksPharmacology, Toxico…Chemical Engineering: 1.62× its world share, 1 worksChemical EngineeringChemistry: 0.57× its world share, 2 worksChemistryComputer Science: 1.19× its world share, 20 worksComputer ScienceEarth and Planetary Sciences: 5.91× its world share, 20 worksEarth and Planetary …Energy: 0.95× its world share, 2 worksEnergyEngineering: 1.62× its world share, 52 worksEngineeringEnvironmental Science: 3.85× its world share, 41 worksEnvironmental ScienceMaterials Science: 0.68× its world share, 5 worksMaterials ScienceMathematics: 0.07× its world share, 0 worksMathematicsPhysics and Astronomy: 0.38× its world share, 2 worksPhysics and AstronomyHealth Professions: 0.85× its world share, 5 worksHealth ProfessionsMedicine: 0.28× its world share, 11 worksMedicineNursing: 0.62× its world share, 1 worksNursingArts and Humanities: 0.31× its world share, 2 worksArts and HumanitiesBusiness, Management and Accounting: 0.69× its world share, 5 worksBusiness, Management…Decision Sciences: 1.07× its world share, 2 worksDecision SciencesEconomics, Econometrics and Finance: 0.45× its world share, 2 worksEconomics, Econometr…Psychology: 0.46× its world share, 3 worksPsychologySocial Sciences: 0.68× its world share, 18 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Earth and Planetary Sciences, 5.9×. Every wedge is a field page.

All 24 fields, with their numbers
  1. Earth and Planetary Sciences5.91×20 works
  2. Environmental Science3.85×41 works
  3. Chemical Engineering1.62×1 works
  4. Engineering1.62×52 works
  5. Computer Science1.19×20 works
  6. Decision Sciences1.07×2 works
  7. Energy0.95×2 works
  8. Agricultural and Biological Sciences0.91×9 works
  9. Health Professions0.85×5 works
  10. Immunology and Microbiology0.76×2 works
  11. Business, Management and Accounting0.69×5 works
  12. Materials Science0.68×5 works
  13. Social Sciences0.68×18 works
  14. Nursing0.62×1 works
  15. Neuroscience0.61×2 works
  16. Biochemistry, Genetics and Molecular Biology0.60×7 works
  17. Pharmacology, Toxicology and Pharmaceutics0.57×0 works
  18. Chemistry0.57×2 works
  19. Psychology0.46×3 works
  20. Economics, Econometrics and Finance0.45×2 works
  21. Physics and Astronomy0.38×2 works
  22. Arts and Humanities0.31×2 works
  23. Medicine0.28×11 works
  24. Mathematics0.07×0 works

Who are the top researchers at Tetra Tech (United States)?

Ranked on the quality score, Richard Choularton, Donald W. Ross and Steven A. Gherini lead among researchers whose main affiliation is Tetra Tech (United States).

  1. 1 Richard Choularton United States · #1,376,780 worldwide 991 citations · 45 works
  2. 2 Donald W. Ross United States · #1,749,961 worldwide 1.2k citations · 52 works
  3. 3 Steven A. Gherini United States · #2,100,256 worldwide 1.8k citations · 53 works
  4. 4 Will Levandowski United States · #2,471,012 worldwide 459 citations · 48 works
  5. 5 Sen Bai United States · #2,641,154 worldwide 613 citations · 16 works
  6. 6 J. Ian Collins United States · #2,702,168 worldwide 665 citations · 29 works
  7. 7 Michael T. Barbour United States · #2,743,605 worldwide 3.2k citations · 65 works
  8. 8 Mariza C. Costa‐Cabral United States · #3,011,611 worldwide 989 citations · 29 works
  9. 9 Edward K. Noda United States · #3,012,571 worldwide 718 citations · 28 works
  10. 10 David J. Divoky United States · #3,016,022 worldwide 711 citations · 40 works
All ranked researchers at Tetra Tech (United States)

What are the most cited papers from Tetra Tech (United States)?

The most cited paper from Tetra Tech (United States) is "Correlation of chemical structure with reproductive and developmental toxicity as it relates to the use of the threshold of toxicological concern" (Michael C. Laufersweiler, Bernard Kwaku-Mensah Gadagbui, Irene Abraham et al., 2011), with 1,640 citations. Next come "Quantifying the consensus on anthropogenic global warming in the scientific literature" (1,361) and "Lag Time in Water Quality Response to Best Management Practices: A Review" (726).

Most cited papers
#PaperReleasedCitations
1 Correlation of chemical structure with reproductive and developmental toxicity as it relates to the use of the threshold of toxicological concern Michael C. Laufersweiler, Bernard Kwaku-Mensah Gadagbui, Irene Abraham et al. · Regulatory Toxicology and Pharmacology 16 Oct 2011 1,640
2 Quantifying the consensus on anthropogenic global warming in the scientific literature John Cook, Dana Nuccitelli, Sarah Green et al. · Environmental Research Letters Open access 15 May 2013 1,361
3 Lag Time in Water Quality Response to Best Management Practices: A Review Donald W. Meals, Steven A. Dressing, Thomas E. Davenport · Journal of Environmental Quality 2010 726
4 Thalidomide: The Tragedy of Birth Defects and the Effective Treatment of Disease James H. Kim, Anthony R. Scialli · Toxicological Sciences 19 Apr 2011 664
5 Mercury Contamination in Forest and Freshwater Ecosystems in the Northeastern United States Charles T. Driscoll, Young-Ji Han, Celia Y. Chen et al. · BioScience 2007 575
All 60 most cited papers, with filters and sorting

Which keywords describe research at Tetra Tech (United States)?

By fractional works in 2022-now, weighted toward what it does more of than the world: Climate Change, Water Quality, Machine Learning, Health Effects, Remote Sensing, Environmental Impact, Sediment Transport and Sustainability.

▲ more of its work than of the world's◆ about the world's share▼ less than the world's

Size is fractional works in 2022-now in the topics tagged with each word; colour is the word's share of this institution's work against its share of the world's. The 40 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 40 words, with their numbers
  1. Climate Change21▲ 3.7×46 topics
  2. Machine Learning12▲ 1.72×27 topics
  3. Sustainability9▲ 1.80×29 topics
  4. Environmental Impact8▲ 2.3×27 topics
  5. Remote Sensing8▲ 3.0×17 topics
  6. Water Quality7▲ 8.4×11 topics
  7. Health Effects6▲ 5.0×12 topics
  8. Artificial Intelligence6▲ 2.1×8 topics
  9. Big Data6▲ 3.1×8 topics
  10. Risk Assessment4▲ 3.2×11 topics
  11. Sediment Transport4▲ 13×5 topics
  12. Water Resources4▲ 7.9×6 topics
  13. Hydrological Modeling4▲ 7.8×2 topics
  14. Land Use Change4▲ 5.6×4 topics
  15. Ethics4▲ 3.2×4 topics
  16. Groundwater4▲ 17×5 topics
  17. Eutrophication3▲ 13×3 topics
  18. Global Warming3▲ 3.5×7 topics
  19. Surveillance3▲ 4.6×2 topics
  20. Algorithmic Bias3▲ 14×1 topic
  21. Climate Change Impact3▲ 5.4×3 topics
  22. Discrimination3▲ 5.8×2 topics
  23. Fairness3▲ 12×1 topic
  24. Global Distribution3▲ 18×2 topics
  25. Ocean Circulation3▲ 8.8×3 topics
  26. Model Evaluation2▲ 9.3×2 topics
  27. Environmental Noise2▲ 27×1 topic
  28. Interpretable Models2▲ 21×1 topic
  29. Machine Learning Interpretability2▲ 21×1 topic
  30. Noise Pollution2▲ 27×1 topic
  31. Combustion2▲ 18×3 topics
  32. Global Hydrology2▲ 16×1 topic
  33. Thermodynamic Modeling2▲ 9.6×2 topics
  34. Uncertainty Assessment2▲ 16×1 topic
  35. CFD Simulation2▲ 8.8×3 topics
  36. Monitoring2▲ 11×3 topics
  37. Polycyclic Aromatic Hydrocarbons2▲ 19×2 topics
  38. Subduction2▲ 14×3 topics
  39. Acoustic Communication2▲ 19×2 topics
  40. Hydrogeology2▲ 44×3 topics

Which research topics does Tetra Tech (United States) publish most on?

By volume in 2022-now: Ethics and Social Impacts of AI, Explainable Artificial Intelligence (XAI), Noise Effects and Management and Hydrology and Watershed Management Studies.

Ethics and Social Impact…3Ethics and Social Impacts of AI: 3 fractional worksExplainable Artificial I…2Explainable Artificial Intelligence (XAI): 2 fractional worksNoise Effects and Manage…2Noise Effects and Management: 2 fractional worksHydrology and Watershed …2Hydrology and Watershed Management Studies: 2 fractional worksFlood Risk Assessment and Management: 2 fractional worksearthquake and tectonic studies: 2 fractional worksGroundwater flow and con…2Groundwater flow and contamination studies: 2 fractional worksToxic Organic Pollutants Impact: 2 fractional worksSeismology and Earthquake Studies: 2 fractional worksLegal and Policy Issues2Legal and Policy Issues: 2 fractional works
Safety ResearchArtificial IntelligenceSpeech and HearingWater Science and Technology5 others

Area is fractional works; colour is the subfield each topic belongs to.

  1. 1 Ethics and Social Impacts of AI Safety Research 3 works
  2. 2 Explainable Artificial Intelligence (XAI) Artificial Intelligence 2 works
  3. 3 Noise Effects and Management Speech and Hearing 2 works
  4. 4 Hydrology and Watershed Management Studies Water Science and Technology 2 works
  5. 5 Flood Risk Assessment and Management Global and Planetary Change 2 works
  6. 6 earthquake and tectonic studies Geophysics 2 works
  7. 7 Groundwater flow and contamination studies Environmental Engineering 2 works
  8. 8 Toxic Organic Pollutants Impact Health, Toxicology and Mutagenesis 2 works
  9. 9 Seismology and Earthquake Studies Artificial Intelligence 2 works
  10. 10 Legal and Policy Issues Law 2 works

How open and international is its research?

Against the world's own shares: the tick on each track. Both are shares of its output, so they sit on one scale and can be read against each other as well as against the world.

openly available28.9%not open71.1%

World: 40% of research is openly available.

with international co-authors19.2%domestic only80.8%

World: 18% is written across borders.

How has Tetra Tech (United States)'s research output changed?

Output in 2022-2025 was 39% higher than in 2018-2021.

still counting1990200020102020
grewheldshrank

The same series as a ribbon: one cell per year, darker for more. The line above answers how much; this answers when.

Its share of all research

Growing output can still be a shrinking share: all of science grows. This is Tetra Tech (United States) as a percentage of every work published that year, 0.00065% in 2024.

still counting0.010%0.020%Tetra Tech (United States)0.0011% in 202519801990200020102020

Fractional works of Tetra Tech (United States) over all fractional works that year. How the balance of science has shifted.

How much of it reaches the world top 10%

Year by year, against all institutions in the same year.

still counting5%10%15%all institutions10.0% in 2025Tetra Tech (United States)6.6% in 2025200020102020

Of each year's output, the share that reached the world's 10% most cited for its field and year. Peak 10.9% in 2022.

Other research institutions in Pasadena

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Tetra Tech (United States) on Science Explorer

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