USGS Thesaurus

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  2. A: 118 terms
  1. abandoned mines and quarries
  2. absorption USE sorption
  3. abstracts USE reports
  4. Ac USE actinium
  5. accessing USGS data and products USE USGS information services
  6. acid deposition
  7. acid precipitation USE acid deposition
  8. acid rain USE acid deposition
  9. acid snow USE acid deposition
  10. acidic deposition USE acid deposition
  11. acoustic doppler current profiler USE acoustic doppler current profiling
  12. acoustic doppler current profiling
  13. acoustic methods
  14. actinide series elements
  15. actinium
  16. ADCP USE acoustic doppler current profiling
  17. administrative and political boundaries
  18. adsorption USE sorption
  19. Advanced Very High Resolution Radiometer (AVHRR) USE AVHRR
  20. aerial photographs USE aerial photography
  21. aerial photography
  22. aerial photos USE aerial photography
  23. aeromagnetic maps USE aeromagnetic surveying
  24. aeromagnetic surveying
  25. aeroradiometric surveying
  26. Ag USE silver
  27. age dating (fission-track) USE fission-track dating
  28. age dating (radiometric) USE radiometric dating
  29. age dating (tree ring) USE tree ring analysis
  30. age estimation methods
  31. agricultural water use
  32. agriculture
  33. air photos USE aerial photography
  34. air pollution USE atmospheric composition
  35. air temperature
  36. air transportation USE transportation
  37. airborne imaging USE remote sensing
  38. airborne visible infrared imaging spectrometer USE AVIRIS
  39. Al USE aluminum
  40. algae
  41. algal blooms
  42. algology USE phycology
  43. alien species USE nonindigenous species
  44. alkali metal elements
  45. alkaline earth elements
  46. alluvial sedimentation USE sedimentation
  47. alluvial transport USE sediment transport
  48. alluvium USE unconsolidated deposits
  49. altimetry measurement
  50. aluminum
  51. Am USE americium
  52. americium
  53. amphibians
  54. anadromous fish USE fish
  55. anatomy and physiology
  56. animal and plant census
  57. animal behavior
  58. animal distribution USE biogeography
  59. animal tagging USE plant and animal tagging
  60. animal testing USE plant and animal testing
  61. animal tracking
  62. animals
  63. animations
  64. annelids USE segmented worms
  65. anoxia USE oxygen content (water)
  66. anthracite resources USE coal resources
  67. antimony
  68. aquaculture
  69. aquatic biology
  70. aquatic ecosystems
  71. aquatic vegetation
  72. aquifer level USE ground-water level
  73. aquifer-surface water interaction USE ground-water and surface-water interaction
  74. Ar USE argon
  75. arachnids
  76. arboreal ecosystems USE forest ecosystems
  77. archaea
  78. archaean
  79. archaebacteria USE archaea
  80. archaeology USE archeology
  81. archean USE archaean
  82. archeology
  83. archives (USGS) USE USGS libraries and archives
  84. argon
  85. argon-argon dating USE radiometric dating
  86. arsenic
  87. arthropods
  88. articles (publications) USE reports
  89. artificial recharge USE water resource management
  90. As USE arsenic
  91. Ask-A services (USGS) USE USGS expertise services
  92. astatine
  93. asteroid impact USE impact cratering
  94. asthenosphere
  95. astronomy USE planetary sciences
  96. At USE astatine
  97. atlases USE maps and atlases
  98. atmosphere properties USE atmospheric properties
  99. atmospheric and climatic processes
  100. atmospheric circulation
  101. atmospheric composition
  102. atmospheric deposition (chemical & particulate)
  103. atmospheric deposition (chemical and particulate) USE atmospheric deposition (chemical & particulate)
  104. atmospheric properties
  105. atmospheric sciences
  106. atomic absorption analysis
  107. atomic emission spectroscopy
  108. Au USE gold
  109. audio recordings USE sound recordings
  110. autumn
  111. avalanches USE landslides
  112. AVHRR
  113. AVHRR images USE AVHRR
  114. avian flu USE avian influenza
  115. avian influenza
  116. aviation USE transportation
  117. aviation safety
  118. AVIRIS