Alphabetical listing of categories: F

F -> fluorine (1) administrative facilities -> buildings (11) adminstrative facilities -> buildings (11) agricultural facilities -> agricultural sites (5) conference facilities -> buildings (11) data collection facilities (1) facilities -> buildings (11) facilities (50) health facilities -> medical facilities (2) medical facilities (2) research facilities (4) transit facilities -> transportation features (4) veterinary facilities -> medical facilities (2) facility centers -> buildings (11) factories -> industrial sites (3) false scorpions -> arachnids (1) alluvial fans (2) fans (alluvial) -> alluvial fans (2) farming -> agriculture (14) fish farming -> aquaculture (1) farms -> agricultural sites (5) tank farms -> industrial sites (3) farmsteads -> agricultural sites (5) faulting (geologic) (5) faults (16) normal faults -> faults (16) reverse faults -> faults (16) strike-slip faults -> faults (16) thrust faults -> faults (16) transform faults -> fault zones (3) transverse faults -> faults (16) fault zones (3) fauna -> animals (81) faunal and floral census (microscopic) (3) Fe -> iron (3) earthquake features (2) fluvial features -> hydrographic features (245) geological features -> physiographic features (212) glacier features (7) hydrographic features (245) manmade features (91) marine features -> hydrographic features (245) ocean floor features -> seafloor features (15) physiographic features (212) seafloor features (15) subsea features -> seafloor features (15) tectonic features (15) thermal features (6) transportation features (4) underwater features -> seafloor features (15) volcanic features (53) forks (physiographic features) -> streams (95) customer support and user feedback (4) feedlots -> agricultural sites (5) fens -> wetlands (39) ferns and fern allies (1) ferns and fern allies (1) ferries -> transportation features (4) geomagnetic field -> magnetic field (earth) (18) gravity field -> gravitational field (earth) (12) magnetic field -> magnetic field (earth) (18) gravitational field (earth) (12) magnetic field (earth) (18) field campaigns -> research areas (3) field experiments (9) field guides -> guidebooks (9) field inventory and monitoring (328) field methods (295) field monitoring -> field inventory and monitoring (328) field monitoring stations (2) field observation -> field inventory and monitoring (328) field offices (8) boulder fields -> physiographic features (212) coal fields -> mineral deposit areas (82) experimental fields -> research areas (3) fields -> agricultural sites (5) gas fields -> oil fields (1) ice fields -> ice masses (9) irrigated fields -> agricultural sites (5) lava fields (4) oil fields (1) petroleum fields -> oil fields (1) rice fields -> agricultural sites (5) storage fields (petroleum) -> oil fields (1) field sampling (140) hand-held field spectroscopy -> handheld field spectroscopy (1) handheld field spectroscopy (1) field stations -> field monitoring stations (2) field trip guidebooks -> guidebooks (9) filter plants -> waterworks (1) filtration plants -> waterworks (1) fire control (2) fire damage (5) firehouses -> buildings (11) fire lookouts -> towers (1) fire preparedness (4) -> fires WITH hazard preparedness fire prevention -> fire control (2) controlled fires (2) fires (24) managed fires -> controlled fires (2) fires (controlled) -> controlled fires (2) fires (uncontrolled) -> fires (24) fire stations -> buildings (11) anadromous fish (4) -> migratory species WITH fish diadromous fish (4) -> migratory species WITH fish fish (55) coastal fisheries -> marine fishery resources (3) deep sea fisheries -> marine fishery resources (3) reef fisheries -> marine fishery resources (3) fishery management (14) fishery resources (25) inland fishery resources (5) marine fishery resources (3) recreational fishery resources (1) fishes -> fish (55) fish farming -> aquaculture (1) coastal fishing -> marine fishery resources (3) deep sea fishing -> marine fishery resources (3) recreational fishing -> recreational fishery resources (1) reef fishing -> marine fishery resources (3) sport fishing -> recreational fishery resources (1) fishing (recreational) -> recreation (6) fish inventories (10) -> fish WITH field sampling fish ponds -> lakes (36) fishponds -> lakes (36) fission-track dating (4) fission-track method -> fission-track dating (4) fissures -> physiographic features (212) mud flats -> wetlands (39) tidal flats -> wetlands (39) controlled flooding (5) managed flooding -> controlled flooding (5) flooding (controlled) -> controlled flooding (5) floodplains (2) flood preparedness (7) -> floods WITH hazard preparedness floods (60) flood stage -> streamflow (157) sea floor characteristics -> sea-floor characteristics (37) ocean floor features -> seafloor features (15) sea floor topography -> bathymetry (25) flora -> plants (organisms) (13) faunal and floral census (microscopic) (3) density flow -> sediment transport (47) gene flow -> evolution (1) ground-water flow -> groundwater flow (47) groundwater flow (47) stream flow -> streamflow (157) turbidity flow -> sediment transport (47) heat flow (earth) (1) flowering plants (8) groundwater flow modeling -> mathematical modeling (90) stream flow monitoring -> stream-gage measurement (137) debris flows -> landslides (27) lava flows -> volcanic activity (67) pyroclastic flows -> volcanic activity (67) avian flu -> avian influenza (7) bird flu -> avian influenza (7) fluid dynamics -> hydrodynamics (3) fluid migration -> groundwater flow (47) fluorine (1) fluvial features -> hydrographic features (245) fluvial processes -> streamflow (157) flyways (1) -> migration (organisms) WITH biogeography folding (geologic) (1) folds (geologic) (5) food chain -> food web (3) food cycle -> food web (3) food web (3) foothills -> mountains (6) foraminifera -> protists (5) fords (crossings) -> transportation features (4) earthquake forecasting -> earthquake probabilities (18) volcanic eruption forecasting -> volcanic eruption prediction (6) foreign species -> nonindigenous species (51) deciduous forest ecosystems -> forest ecosystems (23) forest ecosystems (23) mixed forest ecosystems -> forest ecosystems (23) forested wetlands -> wetlands (39) forest reserves -> reserves (5) forest resources (1) forestry -> forest resources (1) forests (7) national forests -> parks (14) state forests -> parks (14) coniferous forests ecosystems -> forest ecosystems (23) forest stations -> buildings (11) forges -> industrial sites (3) forks (physiographic features) -> streams (95) ore formation (1) sinkhole formation (2) soil formation (3) geologic formations -> bedrock geologic units (12) bed forms -> bedforms (2) fossil fuels -> energy resources (117) fossils (14) index fossils -> fossils (14) foundaries -> industrial sites (3) fractal geometric methods -> mathematical modeling (90) fracture (geologic) (9) habitat fragmentation -> habitat alteration (13) freely associated states -> political areas (1) free trade zones -> administrative areas (3) freshwater (ground) -> groundwater (198) freshwater (surface) -> surface water (non-marine) (158) freshwater ecosystems (29) fringing reefs -> reefs (15) fuel depots -> transportation features (4) fossil fuels -> energy resources (117) fumaroles -> thermal features (6) biogeochemical functioning -> biogeochemical cycling (10) ecosystem functions (15) estuarine ecosystem functions (1) -> ecosystem functions WITH estuarine ecosystems wetland functions (6) fungi (5) blast furnaces -> industrial sites (3) furnaces (industrial) -> industrial sites (3) furrows -> physiographic features (212)

Alphabetical index of categories: F