Alphabetical Index of USGS Science Categories

A

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Search for categories. Type a word or phrase here: acid deposition acid precipitation Use: acid deposition acid rain Use: acid deposition acid snow Use: acid deposition acoustic methods administrative and political boundaries Advanced Very High Resolution Radiometer (AVHRR) Use: AVHRR aerial photographs Use: aerial photography aerial photography aerial photos Use: aerial photography aeromagnetic maps Use: aeromagnetic surveying aeromagnetic surveying aeroradiometric surveying age dating (fission-track) Use: fission-track dating age dating (radiometric) Use: radiometric dating age dating (tree ring) Use: tree ring analysis agricultural water use agriculture and farming air photos Use: aerial photography air pollution Use: atmospheric composition, pollution air temperature airborne imaging Use: remote sensing algae algal blooms algology Use: phycology alien species Use: nonindigenous species alluvial sedimentation Use: sedimentation alluvial transport Use: sediment transport alluvium Use: unconsolidated deposits altimetry measurement amphibians anatomy and physiology animal behavior animal distribution Use: biogeography animal tagging Use: plant and animal tagging animal testing Use: plant and animal testing animal tracking animals annelids Use: segmented worms anoxia Use: oxygen content (water) anthracite resources Use: coal resources anthropogenic contamination aquaculture aquatic biology aquatic ecosystems arachnids archaea arthropods asthenosphere atmospheric and climatic processes atmospheric circulation atmospheric composition atmospheric deposition (chemical & particulate) atmospheric properties atmospheric sciences atomic absorption analysis AVHRR AVHRR images Use: AVHRR

B

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Search for categories. Type a word or phrase here: bacteria bacteriology banding Use: plant and animal tagging basement maps Use: bedrock geologic units bathymetry bathymetry data Use: bathymetry bathymetry measurement bedforms bedrock geologic units benthic ecosystems beryllium isotope analysis bioaccumulation biochemistry biocide contaminants Use: pesticide and herbicide contamination bioconcentration Use: bioaccumulation biodiversity biogeochemical cycling biogeochemical functioning Use: biogeochemical cycling biogeochemical processes Use: biogeochemical cycling biogeography bioinformatics Use: biological informatics biological and physical processes biological diversity Use: biodiversity biological informatics biological invasions Use: invasive species, migration (organisms) biological oceanography Use: marine biology biological organisms Use: organisms biological population management biological productivity biological remediation Use: bioremediation biological sciences Use: life sciences biology Use: life sciences bionomics Use: ecology bioremediation biosphere Use: ecosystems biostratigraphy biota biotelemetry Use: telemetry bird banding Use: plant and animal tagging birds bituminous coal resources Use: coal resources blizzards bolide impacts Use: hazards, meteorites bolides Use: meteorites borehole logging borehole temperature logging botany brachiopods Use: bryozoans and brachiopods brown tides Use: algal blooms bryozoans and brachiopods building stone resources business and economics butterflies and moths

C

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Search for categories. Type a word or phrase here: cadastral and legal land descriptions cadastral maps Use: cadastral and legal land descriptions calcareous nannoplankton camera tows Use: underwater photography capturing (animals) carbon cycling carbon isotope analysis carbon-14 analysis careers in science Use: scientific careers carnivores cartography cell biology chemical analysis chemical oceanography Use: marine chemistry chemistry (Earth sciences) Use: geochemistry chemistry (life sciences) Use: biochemistry chloride concentration Use: salinity chromatography chronostratigraphy Use: geologic history circulation (lake) Use: lake circulation circulation (ocean) Use: ocean circulation circulation (water) Use: water circulation clay deposits cleavage (rock) Use: fracture (geologic) climate Use: atmospheric and climatic processes climate change climatic change Use: climate change climatology coal bed methane resources Use: coalbed methane resources coal resources coalbed methane resources coastal ecosystems coastal fisheries Use: marine fishery resources coastal fishing Use: marine fishery resources coelenterates collection of specimens Use: specimen collecting colonization (organisms) Use: dispersal (organisms) commerce Use: business and economics commercial fishery resources commercial water use community ecology computational methods computer science coniferous forests ecosystems Use: forest ecosystems conodonts conservation Use: natural resource management consumers (organisms) contacts (geologic) Use: geologic contacts contaminant transport contaminants (anthropogenic) Use: anthropogenic contamination contaminants (natural) Use: natural contaminants continental lithosphere controlled fires controlled flooding coordinate systems Use: map coordinate systems coral reef ecosystems Use: reef ecosystems corals Use: coelenterates core (Earth) core analysis core sampling Use: drilling and coring coring Use: drilling and coring correlation Use: regression analysis crenulation (geologic) Use: folding (geologic) crust (Earth) crustaceans cryology Use: glaciology CTD measurement culture and demographics culturing (specimens) Curie temperature analysis cyclones Use: hurricanes cytology Use: cell biology

D

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Search for categories. Type a word or phrase here: data management Use: information management methods deciduous forest ecosystems Use: forest ecosystems decision support methods decomposers decomposition (organic) Use: biogeochemical cycling deep sea fisheries Use: marine fishery resources deep sea fishing Use: marine fishery resources demographics Use: culture and demographics deposition (sediment) Use: sedimentation depth-to maps Use: structure contours desert ecosystems desertification developmental biology diagenesis diatoms digital cartography Use: cartography dinoflagellates dinosaurs disasters Use: hazards disease Use: health and disease disease (human) Use: environmental health (human) disease vectors dispersal (organisms) dissolved oxygen Use: oxygen content (water) distribution of animals Use: biogeography distribution of plants Use: biogeography distribution of species Use: biogeography diversity (biological) Use: biodiversity DNA sequencing domestic water use dowsing Use: natural resource exploration drilling and coring drinking water Use: drinking water use drinking water use droughts dynamic geology Use: tectonic processes

E

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Search for categories. Type a word or phrase here: Earth characteristics Earth history Earth materials maps Use: engineering geology Earth sciences Earth structure earthquake activity maps Use: earthquake occurrences earthquake epicenter maps Use: earthquake probabilities earthquake forecasting Use: earthquake probabilities earthquake hazards Use: earthquakes, hazards earthquake monitoring Use: seismic networking earthquake occurrence maps Use: earthquake occurrences earthquake occurrences earthquake prediction Use: earthquake probabilities earthquake preparedness earthquake probabilities earthquake seismology Use: earthquake occurrences, seismology earthquakes echinoderms echo sounding Use: sonar methods ecologic succession Use: succession (biological) ecological competition ecological models Use: ecological processes ecological processes ecology economic geology economics Use: business and economics ecosystem diversity ecosystem functions ecosystem management ecosystem monitoring ecosystem services Use: ecosystem functions ecosystems ecotoxicology El Nino Use: ocean-atmosphere interaction electrical resistivity logging electromagnetic surveying electron microscopy electrophoresis embryology Use: developmental biology emergency management resources Use: hazards endangered species endemic species endocrinology energy sources (nonrenewable) Use: nonrenewable energy resources energy sources (renewable) Use: renewable energy resources engineering geology engineering geology maps Use: engineering geology engineering sciences engineering seismology Use: engineering sciences, seismology entomology environmental analysis Use: environmental assessment environmental assessment environmental hazards Use: hazards environmental health (human) environmental impact assessment Use: environmental assessment environmental management Use: natural resource management environmental planning Use: natural resource management environmental pollutants Use: anthropogenic contamination, natural contaminants environmental processes Use: ecological processes environmental toxicology Use: ecotoxicology eolian sediments Use: unconsolidated deposits erosion estuarine circulation Use: estuarine ecosystems, water circulation estuarine currents Use: estuarine ecosystems, water circulation estuarine ecosystem functions Use: ecosystem functions, estuarine ecosystems estuarine ecosystems eutrophication exotic species Use: nonindigenous species exploration Use: natural resource exploration exploration seismology Use: natural resource exploration, seismology extinction and extirpation extirpation Use: extinction and extirpation

F

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Search for categories. Type a word or phrase here: farming Use: agriculture and farming faunal and floral census ferns and fern allies field experiments field inventory and monitoring field methods field monitoring Use: field inventory and monitoring field observation Use: field inventory and monitoring field sampling fire preparedness Use: fires, hazard preparedness fires fires (controlled) Use: controlled fires fires (uncontrolled) Use: fires fish fish farming Use: aquaculture fish inventories Use: field sampling, fish fishery management fishery resources fishes Use: fish fission-track dating fission-track method Use: fission-track dating flatworms flood preparedness Use: floods, hazard preparedness flooding (controlled) Use: controlled flooding floods floral census Use: faunal and floral census flow cytometry flowering plants fluid migration Use: groundwater flow folding (geologic) foliation (geologic) food chain Use: food web food cycle Use: food web food web foraminifera Use: protists foreign species Use: nonindigenous species forest ecosystems forest resources forestry Use: forest resources fossils fracture (geologic) freshwater (ground) Use: groundwater freshwater (surface) Use: surface water (non-marine) freshwater ecosystems fungi

G

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Search for categories. Type a word or phrase here: game management game species gamma-ray logging gamma-ray spectrometric surveying Use: aeroradiometric surveying gas chromatography gas hydrate resources gem resources gemology Use: mineralogy gene sequencing Use: DNA sequencing genetic diversity genetics geochemical anomaly maps Use: geochemistry geochemical processes geochemical surveys Use: chemical analysis geochemistry geochronology geodesy geographic boundaries Use: administrative and political boundaries geographic coordinate systems Use: map coordinate systems geographic information sciences Use: geography geographic information systems (GIS) geography geohistory Use: geologic history geohydrology Use: hydrogeology geolocation measurement geologic and hydrologic processes geologic contacts geologic formations Use: bedrock geologic units geologic hazards Use: hazards geologic history geologic maps Use: geology geologic sections Use: stratigraphic sections geologic structure geologic units Use: stratigraphic sections geological oceanography Use: marine geology geology geomagnetic field Use: magnetic field (Earth) geomagnetics Use: magnetic field (Earth) geomagnetism Use: magnetic field (Earth) geomorphology geophysical maps Use: geophysics geophysics geosciences Use: Earth sciences geospatial analysis geostatistics Use: statistical analysis geotechnical properties maps Use: engineering geology geothermal resources geothermics Use: heat flow (Earth) GIS Use: geographic information systems (GIS) glacial geology Use: glaciology glaciation glaciers Use: snow and ice cover glaciology global change global climate change Use: climate change global positioning measurement Use: GPS measurement global warming gold ores governmental units Use: administrative and political boundaries GPS measurement grain-size analysis grainsize analysis Use: grain-size analysis granulometry Use: grain-size analysis grassland ecosystems gravel deposits gravitational field (Earth) gravity Use: gravitational field (Earth) gravity anomaly maps Use: gravitational field (Earth) gravity field Use: gravitational field (Earth) gray water Use: wastewater use greenhouse gases grey water Use: wastewater use grid coordinate systems Use: map coordinate systems ground motion maps Use: earthquake occurrences ground water Use: groundwater ground-water flow Use: groundwater flow ground-water quality Use: groundwater quality groundwater groundwater flow groundwater flow modeling Use: groundwater flow, mathematical modeling groundwater geology Use: hydrogeology groundwater movement Use: groundwater flow groundwater quality gymnosperms

H

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Search for categories. Type a word or phrase here: habitat alteration habitat destruction Use: habitat alteration habitat fragmentation Use: habitat alteration habitats hand-held field spectroscopy Use: handheld field spectroscopy handheld field spectroscopy hardness (water) Use: water hardness harmful algal blooms Use: algal blooms, hazards hazard preparedness hazards health (human) Use: environmental health (human) health and disease heat flow (Earth) heatflow (Earth) Use: heat flow (Earth) herbicide contaminants Use: pesticide and herbicide contamination herbivores heredity Use: genetics herpetology histology horizontal datums Use: map coordinate systems horseshoe crabs horticulture Use: agriculture and farming human disease Use: environmental health (human) human environmental safety human health Use: environmental health (human) human impacts hurricanes hydraulic engineering hydraulic models Use: hydraulic engineering hydraulics Use: hydraulic engineering hydroelectric power generation water use Use: power generation water use hydrogeology hydrographic sections Use: hydrogeology hydrologic maps Use: hydrology hydrologic processes Use: geologic and hydrologic processes hydrology hydrosphere Use: water resources hydrothermal processes hyperspectral imaging hypoxia Use: oxygen content (water) hysteresis Use: magnetic hysteresis analysis

I

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Search for categories. Type a word or phrase here: ice Use: snow and ice cover ice core sampling Use: drilling and coring, snow and ice cover ice storms ichnofossils ichthyology IFSAR igneous rocks image analysis immunology in-stream water use Use: instream water use indigenous species Use: native species industrial minerals Use: mineral resources industrial water use information management methods information sciences information system design and development infrared imaging inland fishery resources inner core (Earth) insects instream water use instrument design and development Interferometric Synthetic Aperture Radar (IFSAR) Use: IFSAR introduced species Use: nonindigenous species invader species Use: invasive species invasive species inventory Use: field sampling invertebrate paleontology invertebrate zoology invertebrates irrigation water use isostasy isotopic analysis

J	A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Search for categories. Type a word or phrase here: jellyfish Use: coelenterates jointing (geologic) Use: fracture (geologic)

K	A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Search for categories. Type a word or phrase here: keystone species kriging

L

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Search for categories. Type a word or phrase here: La Nina Use: ocean-atmosphere interaction laboratory methods laboratory-induced magnetization analysis lake circulation lake ecosystems Use: freshwater ecosystems land partitioning systems Use: cadastral and legal land descriptions land subsidence land subsidence maps Use: land subsidence land surface characteristics land surveying land use and land cover land use change Landforms Landsat images Use: multispectral imaging landslide inventory maps Use: landslides landslide maps Use: landslides landslide preparedness Use: hazard preparedness, landslides landslide susceptibility assessment landslide susceptibility maps Use: landslide susceptibility assessment landslides leaching (analytical method) Use: chemical analysis legal land descriptions Use: cadastral and legal land descriptions lepidoptera Use: butterflies and moths lichens LIDAR LIDAR images Use: LIDAR life sciences LIght Detection and Ranging (LIDAR) Use: LIDAR light stable isotope analysis light stable-isotope analysis Use: light stable isotope analysis lignite resources Use: coal resources limnology lineament maps Use: lineation (geologic) lineaments Use: lineation (geologic) lineation (geologic) liquefaction liquid chromatography lithification Use: geologic and hydrologic processes lithologic maps Use: rocks and deposits lithology Use: rocks and deposits lithosphere lithostratigraphy liverworts and hornworts livestock water use Use: agricultural water use location measurement Use: geolocation measurement long-term ecological monitoring

M

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Search for categories. Type a word or phrase here: macroinvertebrates magnetic anomaly maps Use: magnetic field (Earth) magnetic field Use: magnetic field (Earth) magnetic field (Earth) magnetic hysteresis analysis magnetic surveying Use: aeromagnetic surveying, electromagnetic surveying magnetic susceptibility analysis magnetosphere Use: magnetic field (Earth) magnetotelluric sounding Use: electromagnetic surveying malacology Use: zoology mammalogy mammals managed fires Use: controlled fires managed flooding Use: controlled flooding management methods mantle (Earth) map coordinate systems map making Use: cartography map projections Use: map coordinate systems mapmaking Use: cartography mapping Use: cartography marine biology marine chemistry marine ecosystems marine fishery resources marine geology marine geophysics marine water quality marsh ecosystems Use: wetland ecosystems marshland ecosystems Use: wetland ecosystems mass spectroscopy mathematical methods Use: computational methods mathematical modeling mathematical simulation mercury contamination meristics metadata development metallic ores metamorphic rocks metamorphism (biological) metamorphism (geological) meteor impacts Use: hazards, meteorites meteorite impacts Use: hazards, meteorites meteorites meteorology meteors Use: meteorites methane resources (coalbed) Use: coalbed methane resources methods microbiology micropaleontology microscope methods Use: microscopy microscopy microtomy microwave imaging migration (organisms) migratory species mineral resources mineralogical analysis Use: chemical analysis mineralogy minerals Use: mineral resources mining and quarrying mining hazards mining water use mixed forest ecosystems Use: forest ecosystems mixed grass ecosystems Use: grassland ecosystems modeling (mathematical) Use: mathematical modeling molecular biology mollusks morphology (biological) morphometrics Use: meristics mosses moths Use: butterflies and moths mudflows Use: landslides multispectral imaging multivariate statistical analysis mycology

N

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Search for categories. Type a word or phrase here: native species natural contaminants natural gas resources natural remanent magnetization analysis natural remnant magnetization analysis Use: natural remanent magnetization analysis natural resource assessment natural resource exploration natural resource extraction natural resource management natural resources navigating Use: geolocation measurement nekton nematodes Use: roundworms neotectonic processes neotectonics Use: neotectonic processes neutron activation analysis nitrogen content Use: nutrient