Alphabetical listing of categories: L

laboratories (3) laboratories -> research facilities (2) laboratory-induced magnetization analysis (1) laboratory methods (71) lagoons -> lakes (26) laguna -> lakes (26) lahars (1) lake beds -> lakes (26) lake channels -> channels (2) lake circulation -> water circulation (3) lake districts -> land regions (6) lake ecosystems -> freshwater ecosystems (17) lake regions -> land regions (6) crater lakes -> lakes (26) dry lakes -> lakes (26) intermittent lakes -> lakes (26) intermittent oxbow lakes -> lakes (26) intermittent salt lakes -> lakes (26) lakes (26) oxbow lakes -> lakes (26) salt lakes -> lakes (26) underground lakes -> caves (2) Arctic land -> tundras (2) land-tied islands -> islands (6) land use and land cover (45) landfills -> disposal sites (2) sanitary landfills -> disposal sites (2) boat landings -> hydrographic structures (15) landmarks (monuments) -> monuments (1) land regions (6) Landsat images (5) -> multispectral imaging WITH image collections landscape -> land surface characteristics (29) landslide maps (4) -> landslides WITH maps and atlases landslide preparedness (3) -> hazard preparedness WITH landslides landslides -> physiographic features (91) landslides (18) landslide susceptibility assessment (5) landslide susceptibility maps (1) -> landslide susceptibility assessment WITH maps and atlases land surface characteristics (29) land surveying (3) land use and land cover (45) land use change (17) La Nina -> ocean-atmosphere interaction (7) boat launches -> hydrographic structures (15) lava -> volcanic rocks (4) lava flows -> volcanic activity (49) ozone layer (1) leaching (analytical method) -> chemical analysis (29) lead-210 dating -> radiometric dating (10) lead mines -> mine sites (7) lifelong learning resources (6) leased areas (government) -> administrative areas (8) leased zones (government) -> administrative areas (8) legation buildings -> buildings (4) lepidoptera -> butterflies and moths (5) aquifer level -> ground-water level (10) ground-water level (10) surface-water level (2) trophic level dynamics -> food web (3) libraries and archives (9) lichens (6) LIDAR (3) life history -> population and community ecology (287) lifelong learning resources (6) life sciences (351) LIght Detection and Ranging (LIDAR) -> LIDAR (3) visible light imaging (1) light stable-isotope analysis -> light stable isotope analysis (9) light stable isotope analysis (9) lignite resources -> coal resources (12) limnology (19) contour lines -> topography (50) liquefaction (1) high-pressure liquid chromatography -> liquid chromatography (1) liquid chromatography (1) lithification -> geologic processes (244) lithologic maps (15) -> rocks and deposits WITH maps and atlases lithology -> rocks and deposits (57) continental lithosphere (1) lithosphere (6) oceanic lithosphere (4) lithostratigraphy (2) littoral ecosystems -> coastal ecosystems (38) liverworts and hornworts (1) livestock husbandry -> agriculture (7) livestock water use -> agricultural water use (5) llanos -> plains (1) bed load -> sediment transport (28) suspended load -> sediment transport (28) total maximum daily load -> TMDL (2) locales -> populated places (7) localities -> populated places (7) populated localities -> populated places (7) location measurement -> geolocation measurement (33) lodes (mineral) -> mineral deposit areas (6) lodges -> buildings (4) loess -> unconsolidated deposits (13) borehole logging (5) borehole temperature logging (1) electrical resistivity logging (2) well logging -> borehole logging (5) long-term ecological monitoring (16) fire lookouts -> towers (1) lost rivers -> streams (52) parking lots -> parking sites (1) LTERs -> ecological research sites (2) luminescence dating (3) optically-stimulated luminescence dating -> luminescence dating (3)

Alphabetical index of categories: L