Hierarchy classification:

1. top of the aat hierarchies
2. Associated Concepts Facet
3. Associated Concepts (hierarchy name)
4. scientific concepts
5. physical sciences concepts
6. earth sciences concepts

Narrower term/s

• sky (earth feature)
• clouds[+]
  • cirrus clouds
  • cirrostratus clouds
  • cirrocumulus clouds
  • altostratus clouds
  • altocumulus clouds
  • nimbostratus clouds
  • cumulus clouds
  • stratus clouds
  • cumulonimbus clouds
  • stratocumulus clouds
• physical features[+]
  • undersea features [+]
    • undersea landforms [NP] [+]
      • continental rises
      • undersea shelf rises
      • undersea rises
      • undersea slopes
      • undersea mountain chains
      • seamounts [+]
      • undersea peaks
      • undersea ranges
      • undersea ridges
      • undersea pinnacles
      • undersea knolls
      • undersea hills
      • undersea mounds
      • undersea tongues
      • undersea spurs
      • undersea benches
      • undersea banks
      • undersea aprons
      • undersea fans
      • undersea shoals
      • undersea shelves [+]
      • undersea shelf edges
      • undersea cliffs
      • undersea ledges
      • undersea sills
      • undersea platforms
      • undersea terraces
      • undersea plains
      • abyssal plains
      • undersea cordilleras
      • undersea valleys
      • undersea shelf valleys
      • undersea median valleys
      • undersea ravines
      • undersea canyons
      • undersea basins
      • undersea saddles
      • undersea gaps
      • undersea holes
      • undersea channels
      • undersea forks
      • undersea levees
      • undersea troughs
      • undersea moats
      • undersea trenches
      • undersea furrows
      • undersea fracture zones
      • submerged features
      • undersea ramps
      • arrugados
    • man-made undersea features [+]
      • artificial reefs [NP]
  • former physical features
  • sections of physical features
  • hydrographic features [+]
    • bodies of water (natural) [NP] [+]
      • fiords
      • harbors [+]
      • lagoons (bodies of water)
      • ponds (water) [+]
      • pools (bodies of water)
      • seas
      • channels (water bodies) [+]
      • meanders (water body components) [+]
      • riverbanks
      • aquifers
      • glaciers (bodies of water)
      • gulfs (bodies of water)
      • bays (bodies of water)
      • coves (bodies of water)
      • [bodies of water by state] [+]
      • icebergs
      • pack ice
      • inlets
      • salt lakes
      • bights
      • sounds (bodies of water)
      • straits
      • narrows (watercourse)
      • ice caps
      • snowfields
      • reaches
      • anchorages [+]
      • cenotes
      • waterholes
      • whirlpools
      • headwaters
      • shallows
      • fords
      • river mouths
      • ice sheets
      • icecap depressions
      • icecap domes
      • ice tongues
      • passages (bodies of water)
      • guts (bodies of water)
      • fishing areas (hydrographic features)
      • marine bodies of water [+]
      • bodies of freshwater [+]
    • man-made hydrographic features [+]
      • aqueducts [NP] [+]
      • settling basins [NP]
      • reservoirs (water distribution structures) [NP] [+]
      • water tanks [NP] [+]
      • wells (structures) [NP] [+]
      • cuts (earthworks) [NP] [+]
      • drainage systems [NP]
      • docks (waterfront spaces) [NP]
      • artificial water channels [NP] [+]
  • hypsographic features [+]
    • terrestrial features (natural) [+]
      • landforms (terrestrial) [NP] [+]
    • man-made hypsographic features [+]
      • mounds [NP] [+]
      • artificial islands [NP] [+]
  • vegetation features [+]
    • plant communities (natural) [NP] [+]
      • grasslands [+]
      • tundras [+]
      • scrublands
      • forests (plant communities) [+]
      • ephemeral communities (plant or animal communities) [NP]
    • man-made vegetation features [+]
      • tree farms [NP]
      • plantations [NP]
      • vineyards [NP]
      • orchards [NP]
  • lost physical features
• earth (features)