USGS Thesaurus

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  2. R: 89 terms
  1. Ra USE radium
  2. radar ecology USE doppler radar imaging
  3. radar imaging
  4. radar tomography USE tomography
  5. radio telemetry USE telemetry
  6. radioactive waste repositories USE waste treatment and disposal
  7. radioactivity
  8. radiocarbon dating USE carbon-14 analysis
  9. radioisotope tagging USE plant and animal tagging
  10. radioisotope tracer study USE tracer study
  11. radiolaria USE protists
  12. radiometric age determination USE radiometric dating
  13. radiometric dating
  14. radium
  15. radon
  16. rain USE precipitation (atmospheric)
  17. rainfall USE precipitation (atmospheric)
  18. rainfall measurement USE field inventory and monitoring
  19. rangeland ecosystems USE terrestrial ecosystems
  20. rare earth elements
  21. Rb USE rubidium
  22. Rb-Sr age analysis USE rubidium-strontium analysis
  23. Re USE rhenium
  24. re-establishment (organisms)
  25. reaches (hydraulic) USE river reaches
  26. reaches (streams) USE river reaches
  27. reaction transport
  28. real-time data USE real-time monitoring and reporting
  29. real-time monitoring and reporting
  30. recharge USE water cycle
  31. reclaimed water USE water resource management
  32. reclamation USE remediation
  33. recolonization (organisms)
  34. reconnaissance USE field inventory and monitoring
  35. recreation
  36. recreational fishery resources
  37. recreational fishing USE recreational fishery resources
  38. red tides USE algal blooms
  39. reef ecosystems
  40. reef fisheries USE marine fishery resources
  41. reef fishing USE marine fishery resources
  42. regression analysis
  43. regulations USE policies and regulations
  44. regulations (USGS) USE USGS policies and regulations
  45. reintroduction (organisms)
  46. relative abundance analysis
  47. relief maps USE maps and atlases
  48. remanent magnetism
  49. remediation
  50. remote sensing
  51. remote video monitoring USE video monitoring
  52. remote-sensing data USE image collections
  53. remote-sensing images USE image collections
  54. reports
  55. reptiles
  56. residential water use USE domestic water use
  57. resistivity
  58. resistivity sounding USE electrical resistivity logging
  59. resource assessment USE natural resource assessment
  60. resource conservation USE natural resource management
  61. resource extraction USE natural resource extraction
  62. resource restoration USE natural resource management
  63. restoration USE remediation
  64. revegetation USE bioremediation
  65. Rf USE rutherfordium
  66. Rh USE rhodium
  67. rhenium
  68. rheology USE deformation (geologic)
  69. rhodium
  70. riparian ecosystems USE wetland ecosystems
  71. risk assessment
  72. river discharge USE stream discharge
  73. river discharge monitoring USE field inventory and monitoring
  74. river ecosystems USE freshwater ecosystems
  75. river reaches
  76. river systems
  77. Rn USE radon
  78. rock composition USE rocks and deposits
  79. rock mechanics maps USE engineering geology
  80. rockfalls USE landslides
  81. rocks and deposits
  82. roundworms
  83. Ru USE ruthenium
  84. rubidium
  85. rubidium-strontium analysis
  86. runoff
  87. rural water use USE agricultural water use
  88. ruthenium
  89. rutherfordium