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Alphabetical index of 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

Number of information resources is shown in parentheses after each term.

abandoned mines and quarries (5) atomic absorption analysis (3) abstracts -> reports (106) accelerators -> research facilities (4) acid deposition (6) acidic deposition -> acid deposition (6) acid precipitation -> acid deposition (6) acid rain -> acid deposition (6) acid snow -> acid deposition (6) acoustic doppler current profiler -> acoustic doppler current profiling (2) acoustic doppler current profiling (2) acoustic methods (33) neutron activation analysis (2) informatics activities -> information technology methods (20) institutional structures and activities (336) seismic activity -> earthquake occurrences (42) volcanic activity (68) earthquake activity maps (14) -> maps and atlases -> earthquake occurrences ADCP -> acoustic doppler current profiling (2) adits (mine sites) -> mine sites (15) administrative and political boundaries (5) administrative areas (8) administrative divisions -> administrative areas (8) second-order administrative divisions -> countries, 2nd order divisions (1) administrative facilities -> buildings (13) adminstrative facilities -> buildings (13) advanced spaceborne thermal emission and reflection radiometer -> multispectral imaging (26) Advanced Very High Resolution Radiometer (AVHRR) -> AVHRR (10) aerial photographs (14) -> aerial photography -> image collections aerial photography (34) aerial photos (14) -> image collections -> aerial photography aeromagnetic maps (4) -> aeromagnetic surveying -> maps and atlases aeromagnetic surveying (10) aeroradiometric surveying (1) Ag -> silver (1) Rb-Sr age analysis -> rubidium-strontium analysis (2) age dating (fission-track) -> fission-track dating (4) age dating (radiometric) -> radiometric dating (12) age dating (tree ring) -> tree ring analysis (1) radiometric age determination -> radiometric dating (12) age estimation methods (6) cooperative agreements -> partnerships (38) agricultural colonies -> populated places (7) agricultural facilities -> agricultural sites (6) agricultural regions (2) agricultural reserves -> agricultural sites (6) agricultural sites (6) agricultural water use (10) agriculture (15) ahus -> mountain summits (1) airborne imaging -> remote sensing (117) airborne visible infrared imaging spectrometer -> AVIRIS (3) air photos (14) -> image collections -> aerial photography air pollution (7) -> contamination and pollution -> atmospheric composition air routes -> transportation features (4) air temperature (10) air transportation -> transportation (1) Al -> aluminum (3) algae (16) algal blooms (3) algology -> phycology (3) alien species -> nonindigenous species (52) ferns and fern allies (1) grazing allotments -> agricultural sites (6) alluvial fans (2) alluvial sedimentation -> sedimentation (30) alluvial transport -> sediment transport (47) alluvium -> unconsolidated deposits (20) habitat alteration (13) satellite altimetry (2) -> altimetry measurement -> remote sensing altimetry measurement (3) aluminum (3) amphibians (26) anabranches -> streams (96) anadromous fish (4) -> migratory species -> fish atomic absorption analysis (3) carbon-14 analysis (2) carbon isotope analysis (5) chemical analysis (60) core analysis (9) Curie temperature analysis (1) environmental analysis -> environmental assessment (46) geospatial analysis (28) grain-size analysis (3) grainsize analysis -> grain-size analysis (3) image analysis (6) isotopic analysis (23) laboratory-induced magnetization analysis (1) light stable-isotope analysis -> light stable isotope analysis (14) light stable isotope analysis (14) magnetic susceptibility analysis (2) mineralogical analysis -> chemical analysis (60) multivariate statistical analysis (1) natural remanent magnetization analysis (1) natural remnant magnetization analysis -> natural remanent magnetization analysis (1) neutron activation analysis (2) oxygen isotope analysis (6) paleomagnetic analysis (3) particle-size analysis -> grain-size analysis (3) pollen analysis -> faunal and floral census (microscopic) (3) potassium-argon analysis (1) Rb-Sr age analysis -> rubidium-strontium analysis (2) regression analysis (1) rubidium-strontium analysis (2) spatial analysis (31) stable isotope analysis -> light stable isotope analysis (14) statistical analysis (21) time series analysis (3) topological analysis (1) tree ring analysis (1) tritium analysis (2) uranium-lead analysis (2) uranium-thorium analysis (2) temperature analysis (Curie) -> Curie temperature analysis (1) anatomy and physiology (6) anchorages -> harbors (4) anclajes -> harbors (4) institutional structures and activities (336) sexing (plants and animals) -> sexing (plants & animals) (3) plant and animal tagging (7) plant and animal testing (5) libraries and archives (12) maps and atlases (217) books and book chapters -> reports (106) pamphlets, brochures, and booklets -> reports (106) bryozoans and brachiopods (1) terminologies and classifications (25) atmospheric and climatic processes (166) population and community ecology (381) drilling and coring (20) water supply and demand (85) culture and demographics (31) rocks and deposits (157) information system design and development (43) instrument design and development (31) organism growth and development (8) health and disease (76) waste treatment and disposal (23) sales and distribution services (12) business and economics (11) extinction and extirpation (3) ferns and fern allies (1) faunal and floral census (microscopic) (3) pesticide and herbicide contamination (24) liverworts and hornworts (1) snow and ice cover (19) catalogs and indexes (96) land use and land cover (56) cadastral and legal land descriptions (1) field inventory and monitoring (382) butterflies and moths (3) atmospheric deposition (chemical and particulate) -> atmospheric deposition (chemical & particulate) (9) biological and physical processes (743) anatomy and physiology (6) animal and plant census (21) administrative and political boundaries (5) contamination and pollution (182) abandoned mines and quarries (5) mining and quarrying (18) markup and query language development (1) LIght Detection and Ranging (LIDAR) -> LIDAR (17) advanced spaceborne thermal emission and reflection radiometer -> multispectral imaging (26) laws and regulations (2) policies and regulations (7) elevation and relief -> topography (59) real-time monitoring and reporting (174) groundwater and surface-water interaction (5) systematics and taxonomy (15) speeches and testimony (1) customer support and user feedback (4) employment and volunteer opportunities (13) bees and wasps (3) sea anemones -> coelenterates (13) animal and plant census (21) animal behavior (27) animal distribution -> biogeography (73) animal pounds -> buildings (13) animals (259) distribution of animals -> biogeography (73) sexing (plants & animals) (3) sexing (plants and animals) -> sexing (plants & animals) (3) animal shelters -> buildings (13) animal tagging -> plant and animal tagging (7) plant and animal tagging (7) animal testing -> plant and animal testing (5) plant and animal testing (5) animal tracking (13) animations (9) annelids -> segmented worms (1) geochemical anomaly maps (9) -> geochemistry -> maps and atlases gravity anomaly maps (5) -> gravitational field (earth) -> maps and atlases magnetic anomaly maps (8) -> magnetic field (earth) -> maps and atlases anoxia -> oxygen content (water) (13) anthracite resources -> coal resources (15) antimony (1) Interferometric Synthetic Aperture Radar (IFSAR) -> IFSAR (4) application development -> software development (1) aprons (geological) -> physiographic features (237) aquaculture (1) aquariums -> buildings (13) aquatic biology (53) aquatic ecosystems (132) aquatic vegetation (3) aquifer-surface water interaction -> groundwater and surface-water interaction (5) aquifer level -> groundwater level (27) aquifers (85) arachnids (1) arboreal ecosystems -> forest ecosystems (23) arboretums -> parks (15) archaea (2) archaebacteria -> archaea (2) archaeological centers -> research facilities (4) information architecture (1) libraries and archives (12) data archiving -> data preservation (3) island arcs -> islands (13) Arctic land -> tundras (3) administrative areas (8) chapparal areas -> shrublands (2) civil areas -> administrative areas (8) commemorative areas -> parks (15) concession areas -> administrative areas (8) conservation areas -> reserves (6) cultivated areas -> agricultural sites (6) demonstration areas -> reserves (6) environmental areas -> reserves (6) experimental areas -> research areas (3) game management areas -> reserves (6) grazing areas -> grasslands (11) industrial areas -> industrial sites (3) karst areas (3) lava areas -> lava fields (4) metropolitan areas -> populated places (7) mineral deposit areas (92) mining areas -> mine sites (15) natural areas -> reserves (6) offshore areas -> coastal zones (77) peat cutting areas -> wetlands (39) picnic areas -> parks (15) political areas (1) primitive areas -> reserves (6) protected areas -> reserves (6) public use areas -> parks (15) quicksand areas -> bars (physiographic) (2) recreation areas -> parks (15) research areas (3) rest areas -> parks (15) riparian areas -> wetlands (39) roadless areas -> reserves (6) salt deposit areas -> mineral deposit areas (92) sandy areas -> beaches (13) scenic areas -> parks (15) study areas -> research areas (3) urban areas -> cities (5) wilderness areas -> parks (15) wildlife areas -> reserves (6) leased areas (government) -> administrative areas (8) management areas (reserves) -> reserves (6) argon-argon dating -> radiometric dating (12) arid regions -> deserts (10) arroyos (2) arrugados -> seafloor features (15) arsenic (14) arthropods (32) journal articles -> reports (106) articles (publications) -> reports (106) artificial recharge -> water resource management (22) As -> arsenic (14) volcanic ash -> volcanic rocks (6) environmental assessment (46) environmental impact assessment -> environmental assessment (46) landslide susceptibility assessment (7) natural resource assessment (114) resource assessment -> natural resource assessment (114) risk assessment (51) freely associated states -> political areas (1) astatine (1) ASTER -> multispectral imaging (26) asteroid impact -> impact cratering (1) asthenosphere (1) astronomy -> planetary sciences (8) asylums -> medical facilities (2) At -> astatine (1) atlases -> maps and atlases (217) maps and atlases (217) atmosphere properties -> atmospheric properties (21) atmospheric and climatic processes (166) atmospheric circulation (3) atmospheric composition (11) atmospheric deposition (chemical & particulate) (9) atmospheric deposition (chemical and particulate) -> atmospheric deposition (chemical & particulate) (9) atmospheric dust deposition -> atmospheric deposition (chemical & particulate) (9) atmospheric properties (21) atmospheric sciences (44) atolls -> islands (13) atomic absorption analysis (3) atomic centers -> research facilities (4) atomic emission spectroscopy (4) natural attenuation (harmful chemicals) -> biodegradation (5) Au -> gold (3) audio recordings -> sound recordings (4) avalanches -> landslides (28) debris avalanches -> landslides (28) AVHRR (10) AVHRR images (4) -> image collections -> AVHRR avian flu -> avian influenza (7) avian influenza (7) aviation -> transportation (1) aviation safety (5) AVIRIS (3)

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