USGS Thesaurus

  1. Home
  2. O: 66 terms
  1. O USE oxygen
  2. observatories (USGS) USE USGS observatories
  3. ocean bottom characteristics USE sea-floor characteristics
  4. ocean characteristics
  5. ocean chemistry USE marine chemistry
  6. ocean circulation
  7. ocean current measurement USE field inventory and monitoring
  8. ocean currents
  9. ocean monitoring USE field inventory and monitoring
  10. ocean processes
  11. ocean salinity
  12. ocean sciences
  13. ocean temperature
  14. ocean tides USE tides (oceanic)
  15. ocean water quality USE marine water quality
  16. ocean wave measurement USE field inventory and monitoring
  17. ocean waves
  18. ocean-atmosphere interaction
  19. oceanic lithosphere
  20. oceanography USE ocean sciences
  21. oceans USE ocean characteristics
  22. off-stream water use USE offstream water use
  23. official communications
  24. offstream water use
  25. oil resources
  26. oil sand resources
  27. oil shale resources
  28. oligocene
  29. omnivores
  30. ontogeny USE organism growth and development
  31. open houses (USGS) USE USGS open houses
  32. optical backscatterance sensing USE optical methods
  33. optical methods
  34. optical microscopy
  35. optical reflectance measurement USE optical methods
  36. optically-stimulated luminescence dating USE luminescence dating
  37. oral presentations USE speeches and testimony
  38. ordering services (USGS) USE USGS sales and distribution services
  39. ordovician
  40. ore deposits (metallic) USE metallic ores
  41. ore deposits (non-metallic) USE nonmetallic mineral resources
  42. ore formation
  43. organic decomposition USE biogeochemical cycling
  44. organism groupings (non-taxonomic)
  45. organism growth and development
  46. organisms
  47. orienteering USE geolocation measurement
  48. ornithology
  49. orthoimagery USE aerial photography
  50. orthophotographs USE aerial photography
  51. Os USE osmium
  52. osmium
  53. osmosis
  54. ostracodes
  55. outer core (earth)
  56. outfall USE contamination and pollution
  57. over-fishing USE overfishing
  58. over-grazing USE overgrazing
  59. overfishing
  60. overgrazing
  61. oxidation and reduction
  62. oxygen
  63. oxygen content (water)
  64. oxygen isotope analysis
  65. ozone layer
  66. ozonesphere USE ozone layer