Alphabetical listing of categories: F

F -> fluorine (1) administrative facilities -> buildings (12) adminstrative facilities -> buildings (12) agricultural facilities -> agricultural sites (5) conference facilities -> buildings (12) data collection facilities (1) facilities -> buildings (12) facilities (51) health facilities -> medical facilities (2) medical facilities (2) research facilities (4) transit facilities -> transportation features (4) veterinary facilities -> medical facilities (2) facility centers -> buildings (12) factories -> industrial sites (2) false scorpions -> arachnids (1) alluvial fans (2) fans (alluvial) -> alluvial fans (2) farming -> agriculture (13) fish farming -> aquaculture (1) farms -> agricultural sites (5) tank farms -> industrial sites (2) 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 (256) faunal and floral census (microscopic) (3) Fe -> iron (3) earthquake features (2) fluvial features -> hydrographic features (260) geological features -> physiographic features (214) glacier features (7) hydrographic features (260) manmade features (116) marine features -> hydrographic features (260) ocean floor features -> seafloor features (15) physiographic features (214) seafloor features (15) subsea features -> seafloor features (15) tectonic features (18) thermal features (6) transportation features (4) underwater features -> seafloor features (15) volcanic features (50) forks (physiographic features) -> streams (85) customer support and user feedback (4) feedlots -> agricultural sites (5) fens -> wetlands (38) 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 (8) field inventory and monitoring (375) field methods (609) field monitoring -> field inventory and monitoring (375) field monitoring stations (2) field observation -> field inventory and monitoring (375) field offices (8) boulder fields -> physiographic features (214) coal fields -> mineral deposit areas (76) experimental fields -> research areas (3) fields -> agricultural sites (5) gas fields -> oil fields (1) ice fields -> ice masses (8) irrigated fields -> agricultural sites (5) lava fields (2) oil fields (1) petroleum fields -> oil fields (1) rice fields -> agricultural sites (5) storage fields (petroleum) -> oil fields (1) field sampling (139) hand-held field spectroscopy -> handheld field spectroscopy (1) handheld field spectroscopy (1) field stations -> field monitoring stations (2) field trip guidebooks -> guidebooks (8) filter plants -> waterworks (1) filtration plants -> waterworks (1) fire control (1) fire damage (5) firehouses -> buildings (12) fire lookouts -> towers (1) fire preparedness (4) -> fires WITH hazard preparedness fire prevention -> fire control (1) controlled fires (1) fires (21) managed fires -> controlled fires (1) fires (controlled) -> controlled fires (1) fires (uncontrolled) -> fires (21) fire stations -> buildings (12) 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 (4) fish inventories (10) -> fish WITH field sampling fish ponds -> lakes (33) fishponds -> lakes (33) fission-track dating (4) fission-track method -> fission-track dating (4) fissures -> physiographic features (214) mud flats -> wetlands (38) tidal flats -> wetlands (38) controlled flooding (5) managed flooding -> controlled flooding (5) flooding (controlled) -> controlled flooding (5) floodplains (2) flood preparedness (7) -> floods WITH hazard preparedness floods (57) flood stage -> streamflow (148) sea floor characteristics -> sea-floor characteristics (37) ocean floor features -> seafloor features (15) sea floor topography -> bathymetry (25) flora -> plants (organisms) (25) faunal and floral census (microscopic) (3) density flow -> sediment transport (46) gene flow -> evolution (1) ground-water flow -> groundwater flow (44) groundwater flow (44) stream flow -> streamflow (148) turbidity flow -> sediment transport (46) heat flow (earth) (1) flowering plants (8) groundwater flow modeling -> mathematical modeling (85) stream flow monitoring -> stream-gage measurement (129) debris flows -> landslides (27) lava flows -> volcanic activity (65) pyroclastic flows -> volcanic activity (65) avian flu -> avian influenza (7) bird flu -> avian influenza (7) fluid dynamics -> hydrodynamics (3) fluid migration -> groundwater flow (44) fluorine (1) fluvial features -> hydrographic features (260) fluvial processes -> streamflow (148) 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 (49) deciduous forest ecosystems -> forest ecosystems (23) forest ecosystems (23) mixed forest ecosystems -> forest ecosystems (23) forested wetlands -> wetlands (38) 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 (12) forges -> industrial sites (2) forks (physiographic features) -> streams (85) ore formation (1) sinkhole formation (2) soil formation (3) geologic formations -> bedrock geologic units (12) bed forms -> bedforms (2) fossil fuels -> energy resources (127) fossils (14) index fossils -> fossils (14) foundaries -> industrial sites (2) fractal geometric methods -> mathematical modeling (85) fracture (geologic) (9) habitat fragmentation -> habitat alteration (12) freely associated states -> political areas (1) free trade zones -> administrative areas (8) freshwater (ground) -> groundwater (190) freshwater (surface) -> surface water (non-marine) (175) freshwater ecosystems (26) fringing reefs -> reefs (15) fuel depots -> transportation features (4) fossil fuels -> energy resources (127) fumaroles -> thermal features (6) biogeochemical functioning -> biogeochemical cycling (13) ecosystem functions (15) estuarine ecosystem functions (1) -> ecosystem functions WITH estuarine ecosystems wetland functions (6) fungi (5) blast furnaces -> industrial sites (2) furnaces (industrial) -> industrial sites (2) furrows -> physiographic features (214)

Alphabetical index of categories: F