Alphabetical listing of categories: I

ice -> snow and ice cover (18) icebergs -> ice masses (7) icecap depressions -> ice masses (7) icecap domes -> ice masses (7) icecaps -> ice masses (7) sea ice concentration (2) ice core sampling (1) -> snow and ice cover WITH drilling and coring sea ice cover -> sea ice concentration (2) snow and ice cover (18) icefalls -> ice masses (7) ice fields -> ice masses (7) ice masses (7) ice patches -> ice masses (7) ice sheets -> ice masses (7) ichthyology (6) ICP-AES -> atomic emission spectroscopy (2) IFSAR (4) igneous rocks (8) image analysis (5) AVHRR images (6) -> AVHRR WITH image collections Landsat images (5) -> multispectral imaging WITH image collections remote-sensing images (28) -> remote sensing WITH image collections satellite images (28) -> remote sensing WITH image collections SSM/I images -> SSM/I (1) airborne imaging -> remote sensing (76) doppler radar imaging (1) hyperspectral imaging (3) infrared imaging (12) microwave imaging (1) multispectral imaging (10) panchromatic imaging (1) radar imaging (2) satellite imaging -> remote sensing (76) seismic imaging -> seismic methods (41) thermal imaging (1) visible light imaging (1) airborne visible infrared imaging spectrometer -> AVIRIS (1) asteroid impact -> impact cratering (3) bolide impact -> impact cratering (3) comet impact -> impact cratering (3) meteor impact -> impact cratering (3) environmental impact assessment -> environmental assessment (37) impact cratering (3) human impacts (80) impoundment -> water resource management (16) in-stream water use -> instream water use (7) incinerators -> disposal sites (2) inclines -> physiographic features (91) independent political entities -> political areas (1) composite burn index (1) -> fire damage WITH remote sensing index fossils -> fossils (13) indicator species observation -> ecosystem monitoring (71) indigenous species -> native species (5) inductively coupled plasma-atomic emission spectrometry -> atomic emission spectroscopy (2) industrial minerals -> mineral resources (35) industrial pollution (5) avian influenza (7) biological informatics (6) Earth Science Information Centers (ESICs) -> reference services (4) information management methods (9) geographic information sciences -> geography (111) information sciences (13) information services (73) information system design and development (22) geographic information systems (GIS) (14) infrared imaging (12) airborne visible infrared imaging spectrometer -> AVIRIS (1) inland fishery resources (5) inland seas -> lakes (26) inlets -> channels (2) inner core (earth) (1) inns -> buildings (4) InSAR -> IFSAR (4) careers in science -> scientific careers (8) insecticide contamination -> pesticide and herbicide contamination (12) insects (20) inspection stations -> buildings (4) research institutes -> research facilities (2) institutional structures and activities (166) instream water use (7) instrument design and development (11) insular ecology -> island ecosystems (1) aquifer-surface water interaction -> ground-water and surface-water interaction (2) ground-water/surface-water interaction -> ground-water and surface-water interaction (2) ground-water and surface-water interaction (2) ground water/surface water interaction -> ground-water and surface-water interaction (2) ocean-atmosphere interaction (7) surface-water/ground-water interaction -> ground-water and surface-water interaction (2) surface water/ground water interaction -> ground-water and surface-water interaction (2) interagency programs (10) map interfaces (22) Interferometric Synthetic Aperture Radar (IFSAR) -> IFSAR (4) SAR interferometry -> IFSAR (4) interfluves -> plains (1) intermittent lakes -> lakes (26) intermittent oxbow lakes -> lakes (26) intermittent ponds -> lakes (26) intermittent pools -> lakes (26) intermittent reservoirs -> reservoirs (3) intermittent salt lakes -> lakes (26) intermittent salt ponds -> lakes (26) intermittent streams -> streams (52) intermittent wetlands -> wetlands (26) intersections -> roadways (2) intertidal zones -> coastal zones (43) introduced species -> nonindigenous species (44) salt-water intrusion -> saltwater intrusion (1) saltwater intrusion (1) intrusive rocks -> Plutonic rocks (1) invader species -> invasive species (25) invasive species (25) fish inventories (6) -> fish WITH field sampling inventory -> field inventory and monitoring (328) field inventory and monitoring (328) invertebrate paleontology (1) invertebrates (54) invertebrate zoology (11) iron mines -> mine sites (7) irrigated fields -> agricultural sites (3) irrigation (2) island arcs -> islands (6) island ecosystems (1) islands (6) land-tied islands -> islands (6) mangrove islands -> islands (6) isles -> islands (6) islets -> islands (6) isostasy (1) carbon isotope analysis (3) light stable isotope analysis (9) oxygen isotope analysis (2) stable isotope analysis -> light stable isotope analysis (9) isotopic analysis (15) isotopic tracer study -> tracer study (3) safety issues (human) -> human environmental safety (10)

Alphabetical index of categories: I