American Geophysical Union Index Term Browse

  1. ATMOSPHERIC COMPOSITION AND STRUCTURE
    1. Aerosols and particles
    2. Airglow and aurora
    3. Air/sea constituent fluxes
    4. Biosphere/atmosphere interactions
    5. Chemical kinetic and photochemical properties
    6. Cloud optics
    7. Cloud physics and chemistry
    8. Cloud/radiation interaction
    9. Constituent sources and sinks
    10. Evolution of the atmosphere
    11. Exosphere
    12. Geochemical cycles
    13. Ion chemistry of the atmosphere
    14. Middle atmosphere: composition and chemistry
    15. Middle atmosphere: constituent transport and chemistry
    16. Middle atmosphere: energy deposition
    17. Planetary atmospheres
    18. Pollution: urban and regional
    19. Pressure, density, and temperature
    20. Thermosphere: composition and chemistry
    21. Thermosphere: energy deposition
    22. Radiation: transmission and scattering
    23. Troposphere: composition and chemistry
    24. Troposphere: constituent transport and chemistry
    25. Volcanic effects
    26. Instruments and techniques
    27. General or miscellaneous
  2. BIOGEOSCIENCES
    1. Agricultural systems
    2. Anoxic and hypoxic environments
    3. Astrobiology and extraterrestrial materials
    4. Benthic processes
    5. Bioavailability: chemical speciation and complexation
    6. Biodiversity
    7. Biogeochemical kinetics and reaction modeling
    8. Biogeochemical cycles, processes, and modeling
    9. Biogeophysics
    10. Bioremediation
    11. Biomineralization
    12. Biomolecular and chemical tracers
    13. Bio-optics
    14. Biosignatures and proxies
    15. Biosphere/atmosphere interactions
    16. Carbon cycling
    17. Climate dynamics
    18. Computational methods and data processing
    19. Contaminant and organic biogeochemistry
    20. Data sets
    21. Diel, seasonal, and annual cycles
    22. Ecosystems, structure and dynamics
    23. Estuarine and nearshore processes
    24. Evolutionary geobiology
    25. Geomicrobiology
    26. Hydrothermal systems
    27. Instruments and techniques
    28. Isotopic composition and chemistry
    29. Life in extreme environments
    30. Limnology
    31. Macro- and micropaleontology
    32. Marine systems
    33. Metals
    34. Microbe/mineral interactions
    35. Microbiology: ecology, physiology and genomics
    36. Modeling
    37. Natural hazards
    38. Nitrogen cycling
    39. Nutrients and nutrient cycling
    40. Oxidation/reduction reactions
    41. Paleoclimatology and paleoceanography
    42. Permafrost, cryosphere, and high-latitude processes
    43. Plant ecology
    44. Pollution: urban, regional and global
    45. Remote sensing
    46. Restoration
    47. Riparian systems
    48. Science policy
    49. Soils/pedology
    50. Sulfur cycling
    51. Trace element cycling
    52. Trace gases
    53. Food webs and trophodynamics
    54. Urban systems
    55. Water/energy interactions
    56. Water quality
    57. Wetlands
    58. General or miscellaneous
    59. New fields (not classifiable under other headings)
  3. COMPUTATIONAL GEOPHYSICS
    1. Agent-based models
    2. Cellular automata
    3. Data analysis: algorithms and implementation
    4. Data management
    5. Data presentation and visualization
    6. Hardware solutions
    7. Image processing
    8. Modeling
    9. Model verification and validation
    10. Neural networks, fuzzy logic, machine learning
    11. Numerical solutions
    12. Instruments and techniques
    13. General or miscellaneous
  4. CRYOSPHERE
    1. Permafrost
    2. Seasonally frozen ground
    3. Active layer
    4. Thermokarst
    5. Periglacial processes
    6. Cryosol
    7. Clathrate
    8. Cryobiology
    9. Tundra
    10. Glaciers
    11. Rock glaciers
    12. Ice cores
    13. Ice sheets
    14. Ice shelves
    15. Ice streams
    16. Icebergs
    17. Icing (aufeis, naled)
    18. Snow
    19. Ice
    20. Snowmelt
    21. Avalanches
    22. Rivers
    23. Lakes
    24. Ponds
    25. Sea ice
    26. Polynas
    27. Leads
    28. Remote sensing
    29. Engineering
    30. Mass balance
    31. Energy balance
    32. Thermodynamics
    33. Thermal regime
    34. Properties
    35. Distribution
    36. Dynamics
    37. Glaciology
    38. Weathering
    39. Contaminants
    40. Biogeochemistry
    41. Instruments and techniques
    42. Modeling
    43. General or miscellaneous
  5. EDUCATION
    1. Elementary and secondary education
    2. Post-secondary education
    3. Informal education
    4. Curriculum and laboratory design
    5. Teaching methods
    6. Teacher training
    7. Evaluation and assessment
    8. Instructional tools
    9. Geoscience education research
    10. Diversity
  6. ELECTROMAGNETICS
    1. Antenna arrays
    2. Antennas
    3. Biological effects
    4. Electromagnetic theory
    5. Guided waves
    6. Inverse scattering
    7. Measurement and standards
    8. Nonlinear electromagnetics
    9. Numerical methods
    10. Optics
    11. Plasmas
    12. Random media and rough surfaces
    13. Reflectors and feeds
    14. Scattering and diffraction
    15. Signal processing and adaptive antennas
    16. Singularity expansion method
    17. Transient and time domain
    18. Wave propagation
    19. Instruments and techniques
    20. General or miscellaneous
  7. EXPLORATION GEOPHYSICS
    1. Computational methods: seismic
    2. Computational methods: potential fields
    3. Continental structures
    4. Data processing
    5. Downhole methods
    6. Gravity methods
    7. Magnetic and electrical methods
    8. Oceanic structures
    9. Radioactivity methods
    10. Remote sensing
    11. Seismic methods
    12. Instruments and techniques
    13. General or miscellaneous
  8. GEOCHEMISTRY
    1. Geochemical modeling
    2. Thermodynamics
    3. Reactions and phase equilibria
    4. Subduction zone processes
    5. Mid-oceanic ridge processes
    6. Intra-plate processes
    7. Hydrothermal systems
    8. Alteration and weathering processes
    9. Magma chamber processes
    10. Magma genesis and partial melting
    11. Mantle processes
    12. Composition of the core
    13. Composition of the continental crust
    14. Composition of the oceanic crust
    15. Composition of the hydrosphere
    16. Composition of the biosphere
    17. Composition of the mantle
    18. Composition of the moon
    19. Composition of the planets
    20. Composition of meteorites
    21. Composition of aerosols and dust particles
    22. Geochemical cycles
    23. Major and trace element geochemistry
    24. Radiogenic isotope geochemistry
    25. Stable isotope geochemistry
    26. Mineral and crystal chemistry
    27. Fluid and melt inclusion geochemistry
    28. Marine geochemistry
    29. Sedimentary geochemistry
    30. Organic and biogenic geochemistry
    31. Planetary geochemistry
    32. Field relationships
    33. Instruments and techniques
    34. General or miscellaneous
  9. GEOCHRONOLOGY
    1. Quaternary geochronology
    2. Sidereal geochronology
    3. Radioisotope geochronology
    4. Isotopic disequilibrium dating
    5. Chemical and biological geochronology
    6. Geomorphological geochronology
    7. Correlative geochronology
    8. Thermochronology
    9. Tephrochronology
    10. Cosmogenic-nuclide exposure dating
    11. Extinct radionuclide geochronology
    12. Planetary and lunar geochronology
    13. Sedimentary geochronology
    14. Instruments and techniques
    15. General or miscellaneous
  10. GEODESY AND GRAVITY
    1. Standards and absolute measurements
    2. Instruments and techniques
    3. Integrations of techniques
    4. Satellite geodesy: results
    5. Satellite geodesy: technical issues
    6. Space geodetic surveys(4337)
    7. Control surveys
    8. Seismic cycle related deformations
    9. Transient deformation
    10. Tectonic deformation
    11. Non-tectonic deformation
    12. Earth's interior: composition and state
    13. Earth's interior: dynamics
    14. Rheology of the lithosphere and mantle
    15. Gravity anomalies and Earth structure
    16. Geopotential theory and determination
    17. Time variable gravity
    18. Reference systems
    19. Earth rotation variations
    20. Ocean/Earth/atmosphere/hydrosphere/cryosphere interactions
    21. Mass balance
    22. Atmosphere monitoring with geodetic techniques
    23. Ocean monitoring with geodetic techniques
    24. Global change from geodesy
    25. Lunar and planetary geodesy and gravity
    26. General or miscellaneous
  11. GEOMAGNETISM AND PALEOMAGNETISM
    1. Archeomagnetism
    2. Biogenic magnetic minerals
    3. Core processes
    4. Dynamo: theories and simulations
    5. Environmental magnetism
    6. Geomagnetic excursions
    7. Geomagnetic induction
    8. Magnetic anomalies: modeling and interpretation
    9. Magnetic fabrics and anisotropy
    10. Magnetic mineralogy and petrology
    11. Magnetostratigraphy
    12. Paleointensity
    13. Paleomagnetic secular variation
    14. Paleomagnetism applied to tectonics: regional, global
    15. Paleomagnetism applied to geologic processes
    16. Rapid time variations
    17. Reference fields: regional, global
    18. Remagnetization
    19. Reversals: process, timescale, magnetostratigraphy
    20. Rock and mineral magnetism
    21. Satellite magnetics: main field, crustal field, external field
    22. Spatial variations: all harmonics and anomalies
    23. Spatial variations attributed to seafloor spreading
    24. Time variations: diurnal to decadal
    25. Time variations: secular and longer
    26. Instruments and techniques
    27. Planetary magnetism: all frequencies and wavelengths
    28. General or miscellaneous
  12. GLOBAL CHANGE
    1. Abrupt/rapid climate change
    2. Atmosphere
    3. Biogeochemical cycles, processes, and modeling
    4. Climate variability
    5. Climate dynamics
    6. Cryospheric change
    7. Earth system modeling
    8. Geomorphology and weathering
    9. Global climate models
    10. Coupled models of the climate system
    11. Impacts of global change
    12. Land/atmosphere interactions
    13. Land cover change
    14. Oceans
    15. Regional climate change
    16. Remote sensing
    17. Sea level change
    18. Solid Earth
    19. Solar variability
    20. Water cycles
    21. Instruments and techniques
    22. General or miscellaneous
  13. HISTORY OF GEOPHYSICS
    1. Atmospheric sciences
    2. Biogeosciences
    3. Computational geophysics
    4. Cryosphere
    5. Geochronology
    6. Geodesy
    7. Geomagnetism and paleomagnetism
    8. Hydrology
    9. Nonlinear geophysics
    10. Ocean sciences
    11. Planetology
    12. Seismology
    13. Solar/planetary relationships
    14. Tectonophysics
    15. Volcanology, geochemistry, and petrology
    16. Instruments and techniques
    17. General or miscellaneous
  14. HYDROLOGY
    1. Anthropogenic effects
    2. Catchment
    3. Chemistry of fresh water
    4. Climate impacts
    5. Computational hydrology
    6. Dams
    7. Debris flow and landslides
    8. Desertification
    9. Drought
    10. Eco-hydrology
    11. Energy budgets
    12. Erosion
    13. Estimation and forecasting
    14. Evapotranspiration
    15. Extreme events
    16. Floods
    17. Floodplain dynamics
    18. Frozen ground
    19. Geographic Information Systems (GIS)
    20. Geomechanics
    21. Geomorphology: general
    22. Geomorphology: fluvial
    23. Geomorphology: hillslope
    24. Glaciology
    25. Groundwater hydraulics
    26. Groundwater hydrology
    27. Groundwater quality
    28. Groundwater/surface water interaction
    29. Groundwater transport
    30. Human impacts
    31. Hydroclimatology
    32. Hydrogeophysics
    33. Hydrological cycles and budgets
    34. Hydrometeorology
    35. Hydrologic scaling
    36. Infiltration
    37. Irrigation
    38. Land/atmosphere interactions
    39. Limnology
    40. Model calibration
    41. Modeling
    42. Monitoring networks
    43. Numerical approximations and analysis
    44. Overland flow
    45. Plant ecology
    46. Plant uptake
    47. Precipitation
    48. Precipitation-radar
    49. Remote sensing
    50. Reservoirs (surface)
    51. River channels
    52. Rocks: chemical properties
    53. Rocks: physical properties
    54. Streamflow
    55. Sedimentation
    56. Sediment transport
    57. Snow and ice
    58. Soils
    59. Soil moisture
    60. Stochastic hydrology
    61. Surface water quality
    62. Time series analysis
    63. Uncertainty assessment
    64. Ungaged basins
    65. Vadose zone
    66. Water budgets
    67. Water/energy interactions
    68. Watershed
    69. Water management
    70. Water supply
    71. Weathering
    72. Wetlands
    73. Instruments and techniques: modeling
    74. Instruments and techniques: monitoring
    75. General or miscellaneous
  15. INFORMATICS
    1. Community modeling frameworks
    2. Community standards
    3. Computational models, algorithms
    4. Cyberinfrastructure
    5. Data assimilation, integration and fusion
    6. Data management, preservation, rescue
    7. Data mining
    8. Data and information discovery
    9. Decision analysis
    10. Emerging informatics technologies
    11. Forecasting
    12. Formal logics and grammars
    13. Geospatial
    14. GIS science
    15. Data and information governance
    16. High-performance computing
    17. International collaboration
    18. Interoperability
    19. Knowledge representation and knowledge bases
    20. Machine-to-machine communication
    21. Machine learning
    22. Markup languages
    23. Metadata
    24. Metadata: Provenance
    25. Metadata: Quality
    26. Modeling
    27. Natural language processing
    28. Numerical algorithms
    29. Ontologies
    30. Portals and user interfaces
    31. Query languages for science, markup languages, ontologies
    32. Real-time and responsive information delivery
    33. Rules and logic
    34. Scientific reasoning/inference
    35. Semantic web and semantic integration
    36. Sensor web
    37. Social networks
    38. Software tools and services
    39. Software re-use
    40. Spatial analysis and representation
    41. Standards
    42. Statistical methods: Descriptive
    43. Statistical methods: Inferential
    44. Temporal analysis and representation
    45. Uncertainty
    46. Virtual globes
    47. Visualization and portrayal
    48. Web Services
    49. Workflow
    50. General or miscellaneous
  16. INTERPLANETARY PHYSICS
    1. Coronal mass ejections
    2. Corotating streams
    3. Cosmic rays
    4. Discontinuities
    5. Ejecta, driver gases, and magnetic clouds
    6. Energetic particles
    7. Heliopause and solar wind termination
    8. Heliosphere/interstellar medium interactions
    9. Interplanetary dust
    10. Interplanetary magnetic fields
    11. Interplanetary shocks
    12. Interstellar gas
    13. MHD waves and turbulence
    14. Neutral particles
    15. Pickup ions
    16. Planetary bow shocks
    17. Plasma waves and turbulence
    18. Solar cycle variations
    19. Solar wind plasma
    20. Solar wind sources
    21. Instruments and techniques
    22. General or miscellaneous
  17. IONOSPHERE
    1. Active experiments
    2. Auroral ionosphere
    3. Current systems
    4. Electric fields
    5. Equatorial ionosphere
    6. Ion chemistry and composition
    7. Ionization processes
    8. Ionosphere/atmosphere interactions
    9. Ionosphere/magnetosphere interactions
    10. Ionospheric disturbances
    11. Ionospheric dynamics
    12. Ionospheric irregularities
    13. Ionospheric storms
    14. Meteor-trail physics
    15. Midlatitude ionosphere
    16. Modeling and forecasting
    17. Particle acceleration
    18. Particle precipitation
    19. Planetary ionospheres
    20. Plasma interactions with dust and aerosols
    21. Plasma convection
    22. Plasma temperature and density
    23. Plasma waves and instabilities
    24. Polar cap ionosphere
    25. Solar radiation and cosmic ray effects
    26. Topside ionosphere
    27. Wave/particle interactions
    28. Wave propagation
    29. Instruments and techniques
    30. General or miscellaneous
  18. MAGNETOSPHERIC PHYSICS
    1. Auroral phenomena
    2. Cusp
    3. Electric fields
    4. Energetic particles: precipitating
    5. Energetic particles: trapped
    6. Field-aligned currents and current systems
    7. Forecasting
    8. Magnetic reconnection
    9. Magnetopause and boundary layers
    10. Magnetosheath
    11. Magnetosphere: inner
    12. Magnetosphere: outer
    13. Magnetosphere interactions with satellites and rings
    14. Magnetosphere/ionosphere interactions
    15. Magnetospheric configuration and dynamics
    16. Magnetotail
    17. Magnetotail boundary layers
    18. MHD waves and instabilities
    19. Numerical modeling
    20. Planetary magnetospheres
    21. Plasma convection
    22. Plasma sheet
    23. Plasmasphere
    24. Plasma waves and instabilities
    25. Polar cap phenomena
    26. Radiation belts
    27. Ring current
    28. Solar wind interactions with unmagnetized bodies
    29. Solar wind/magnetosphere interactions
    30. Magnetic storms and substorms
    31. Substorms
    32. Instruments and techniques
    33. General or miscellaneous
  19. MARINE GEOLOGY AND GEOPHYSICS
    1. Back-arc basin processes
    2. Continental shelf and slope processes
    3. Gas and hydrate systems
    4. Marine magnetics and paleomagnetics
    5. Marine electromagnetics
    6. Gravity and isostasy
    7. Heat flow (benthic)
    8. Hydrothermal systems
    9. Littoral processes
    10. Marine hydrogeology
    11. Marine sediments: processes and transport
    12. Marine seismics
    13. Micropaleontology
    14. Midocean ridge processes
    15. Ocean drilling
    16. Oceanic hotspots and intraplate volcanism
    17. Oceanic plateaus and microcontinents
    18. Oceanic transform and fracture zone processes
    19. Plate tectonics
    20. Ophiolites
    21. Seafloor morphology, geology, and geophysics
    22. Ocean observatories and experiments
    23. Subduction zone processes
    24. Submarine landslides
    25. Submarine tectonics and volcanism
    26. Submergence instruments: ROV, AUV, submersibles
    27. Instruments and techniques
    28. General or miscellaneous
  20. MATHEMATICAL GEOPHYSICS
    1. Fourier analysis
    2. Instability analysis
    3. Inverse theory
    4. Numerical approximations and analysis
    5. Persistence, memory, correlations, clustering
    6. Prediction
    7. Probabilistic forecasting
    8. Spatial analysis
    9. Spectral analysis
    10. Stochastic processes
    11. Time series analysis
    12. Uncertainty quantification
    13. Wavelet transform
    14. Wave propagation
    15. Instruments and techniques
    16. General or miscellaneous
  21. ATMOSPHERIC PROCESSES
    1. Atmospheric electricity
    2. Balanced dynamical models
    3. Climate change and variability
    4. Boundary layer processes
    5. Climatology
    6. Clouds and aerosols
    7. Clouds and cloud feedbacks
    8. Convective processes
    9. Data assimilation
    10. General circulation
    11. Idealized model
    12. Land/atmosphere interactions
    13. Large eddy simulation
    14. Lightning
    15. Monte Carlo technique
    16. Mesoscale meteorology
    17. Mesospheric dynamics
    18. Model calibration
    19. Middle atmosphere dynamics
    20. North American Monsoon
    21. Numerical approximations and analyses
    22. Global climate models
    23. Ocean/atmosphere interactions
    24. Paleoclimatology
    25. Planetary meteorology
    26. Polar meteorology
    27. Precipitation
    28. Radiative processes
    29. Regional modeling
    30. Remote sensing
    31. Stratosphere/troposphere interactions
    32. Stratospheric dynamics
    33. Synoptic-scale meteorology
    34. Subgrid-scale (SGS) parameterization
    35. Theoretical modeling
    36. Thermospheric dynamics
    37. Tropical convection
    38. Tropical cyclones
    39. Tropical dynamics
    40. Tropical meteorology
    41. Tropopause dynamics
    42. Turbulence
    43. Acoustic-gravity waves
    44. Tides and planetary waves
    45. Wildland fire model
    46. Instruments and techniques
    47. General or miscellaneous
  22. MINERALOGY AND PETROLOGY
    1. Geochemical modeling
    2. Thermodynamics
    3. Reactions and phase equilibria
    4. Subduction zone processes
    5. Mid-oceanic ridge processes
    6. Intra-plate processes
    7. Hydrothermal systems
    8. Alteration and weathering processes
    9. Magma chamber processes
    10. Magma genesis and partial melting
    11. Mantle processes
    12. Mineral and crystal chemistry
    13. Petrography, microstructures, and textures
    14. Experimental mineralogy and petrology
    15. Igneous petrology
    16. Extrusive structures and rocks
    17. Intrusive structures and rocks
    18. Layered magma chambers
    19. Metamorphic petrology
    20. Thermobarometry
    21. Pressure-temperature-time paths
    22. Fluid flow
    23. Ultra-high pressure metamorphism
    24. Ultra-high temperature metamorphism
    25. Meteorite mineralogy and petrology
    26. Mineral occurrences and deposits
    27. Planetary mineralogy and petrology
    28. Sedimentary petrology
    29. Field relationships
    30. Instruments and techniques
    31. General or miscellaneous
  23. MINERAL PHYSICS
    1. Creep and deformation
    2. Defects
    3. Elasticity and anelasticity
    4. Electrical properties
    5. Equations of state
    6. High-pressure behavior
    7. NMR, Mossbauer spectroscopy, and other magnetic techniques
    8. Optical, infrared, and Raman spectroscopy
    9. Physical thermodynamics
    10. Shock wave experiments
    11. Surfaces and interfaces
    12. Thermal expansivity
    13. X-ray, neutron, and electron spectroscopy and diffraction
    14. Instruments and techniques
    15. General or miscellaneous
  24. NATURAL HAZARDS
    1. Atmospheric
    2. Geological
    3. Hydrological
    4. Oceanic
    5. Space weather
    6. Multihazards
    7. Methods
    8. Other
    9. Analogue modeling
    10. Catastrophe and catastrophe theory
    11. Extreme events
    12. Mathematical and computer modeling
    13. Monitoring, forecasting, prediction
    14. Physical modeling
    15. Precursors
    16. Statistical analysis
    17. Spatial modeling
    18. Climate impact
    19. Health impact
    20. Human impact
    21. Spatial decision support systems
    22. Megacities and urban environment
    23. Exposure
    24. Resilience
    25. Risk
    26. Sustainable development
    27. Vulnerability
    28. Disaster relief
    29. Disaster resilience
    30. Disaster risk analysis and assessment
    31. Disaster risk communication
    32. Disaster management
    33. Economic impacts of disasters
    34. Remote sensing and disasters
    35. Disaster policy
    36. Disaster mitigation
    37. Early warning systems
    38. Emergency management
    39. Preparedness and planning
    40. Microzonation and macrozonation
    41. Community management
    42. Emergency response and evacuations
    43. Recovery and reconstruction after disaster
    44. Contingency planning
    45. International organizations and natural disasters
    46. Interaction between science and disaster management authorities
    47. Sociology of disasters
    48. Psychology of disasters
    49. Miscellaneous
  25. NONLINEAR GEOPHYSICS
    1. Bifurcations and attractors
    2. Cascades
    3. Chaos
    4. Critical phenomena
    5. Complex systems
    6. Emergent phenomena
    7. Fractals and multifractals
    8. Nonlinear differential equations
    9. Nonlinear maps
    10. Nonlinear waves, shock waves, solitons
    11. Pattern formation
    12. Phase transitions
    13. Probability distributions, heavy and fat-tailed
    14. Renormalization group methods
    15. Scaling: spatial and temporal
    16. Self-organized criticality
    17. Self-organization
    18. Turbulence
    19. Instruments and techniques
    20. General or miscellaneous
  26. OCEANOGRAPHY: GENERAL
    1. Analytical modeling and laboratory experiments
    2. Arctic and Antarctic oceanography
    3. Benthic boundary layers
    4. Climate and interannual variability
    5. Coastal processes
    6. Continental shelf and slope processes
    7. Coral reef systems
    8. Descriptive and regional oceanography
    9. Diurnal, seasonal, and annual cycles
    10. Equatorial oceanography
    11. Estuarine processes
    12. Limnology
    13. Marginal and semi-enclosed seas
    14. Marine meteorology
    15. Marine pollution
    16. Numerical modeling
    17. Ocean acoustics
    18. Ocean data assimilation and reanalysis
    19. Ocean observing systems
    20. Ocean predictability and prediction
    21. Ocean optics
    22. Physical and chemical properties of seawater
    23. Physical and biogeochemical interactions
    24. Remote sensing and electromagnetic processes
    25. Time series experiments
    26. Upwelling and convergences
    27. Water masses
    28. Instruments and techniques
    29. General or miscellaneous
  27. OCEANOGRAPHY: PHYSICAL
    1. Air/sea interactions
    2. Capillary waves
    3. Coriolis effects
    4. Currents
    5. Decadal ocean variability
    6. Deep recirculations
    7. Eastern boundary currents
    8. Eddies and mesoscale processes
    9. ENSO
    10. Fine structure and microstructure
    11. Fronts and jets
    12. General circulation
    13. Hydrodynamic modeling
    14. Hydrography and tracers
    15. Ice mechanics and air/sea/ice exchange processes
    16. Internal and inertial waves
    17. Nearshore processes
    18. Ocean fog
    19. Ocean influence of Earth rotation
    20. Overflows
    21. Planetary waves
    22. Sea level: variations and mean
    23. Sediment transport
    24. Surface waves and tides
    25. Topographic/bathymetric interactions
    26. Tsunamis and storm surges
    27. Turbulence, diffusion, and mixing processes
    28. Upper ocean and mixed layer processes
    29. Western boundary currents
    30. Instruments and techniques
    31. General or miscellaneous
  28. OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL
    1. Aerosols
    2. Analytical chemistry
    3. Anoxic environments
    4. Benthic processes, benthos
    5. Biogeochemical cycles, processes, and modeling
    6. Carbon cycling
    7. Chemical speciation and complexation
    8. Chemical tracers
    9. Chemosynthesis
    10. Colloids
    11. Ecological prediction
    12. Ecosystems, structure, dynamics, and modeling
    13. Food webs, structure, and dynamics
    14. Gases
    15. Geochemistry
    16. Higher trophic levels
    17. Hydrothermal systems
    18. Hypoxic environments
    19. Marine inorganic chemistry
    20. Microbiology and microbial ecology
    21. Natural products chemistry
    22. Nutrients and nutrient cycling
    23. Marine organic chemistry
    24. Oxidation/reduction reactions
    25. Photochemistry
    26. Photosynthesis
    27. Physical chemistry
    28. Phytoplankton
    29. Population dynamics and ecology
    30. Radioactivity and radioisotopes
    31. Sedimentation
    32. Sorptive scavenging
    33. Stable isotopes
    34. Symbiosis
    35. Trace elements
    36. Zooplankton
    37. Instruments, sensors, and techniques
    38. General or miscellaneous
  29. PALEOCEANOGRAPHY
    1. Abrupt/rapid climate change
    2. Anthropogenic effects
    3. Atmospheric transport and circulation
    4. Aerosols
    5. Albedo
    6. Astronomical forcing
    7. Biogeochemical cycles, processes, and modeling
    8. Continental climate records
    9. Corals
    10. Cosmogenic isotopes
    11. Dendrochronology
    12. El Nino
    13. Geochemical tracers
    14. Glacial
    15. Global climate models
    16. Greenhouse gases
    17. Ice cores
    18. Insolation forcing
    19. Interglacial
    20. Interhemispheric phasing
    21. Isotopic stage
    22. Limnology
    23. Micropaleontology
    24. Milankovitch theory
    25. Paleocene/Eocene thermal maximum
    26. Paleoecology
    27. Palynology
    28. Sea surface temperature
    29. Speleothems
    30. Stadial
    31. Thermohaline
    32. Upwelling
    33. Instruments and techniques
    34. General or miscellaneous
  30. PHYSICAL PROPERTIES OF ROCKS
    1. Acoustic properties
    2. Fracture and flow
    3. Magnetic and electrical properties
    4. Microstructure
    5. Permeability and porosity
    6. Plasticity, diffusion, and creep
    7. Thermal properties
    8. Transport properties
    9. Wave attenuation
    10. Instruments and techniques
    11. General or miscellaneous
  31. PLANETARY SCIENCES: ASTROBIOLOGY
    1. Formation of stars and planets
    2. Planetary atmospheres, clouds, and hazes
    3. Origin of life
    4. Hydrothermal systems and weathering on other planets
    5. Early environment of Earth
  32. PLANETARY SCIENCES: SOLID SURFACE PLANETS
    1. Atmospheres
    2. Aurorae and airglow
    3. Composition
    4. Erosion and weathering
    5. Glaciation
    6. Gravitational fields
    7. Heat flow
    8. Hydrology and fluvial processes
    9. Ices
    10. Impact phenomena, cratering
    11. Interactions with particles and fields
    12. Interiors
    13. Ionospheres
    14. Magnetic fields and magnetism
    15. Magnetospheres
    16. Meteorology
    17. Orbital and rotational dynamics
    18. Origin and evolution
    19. Physical properties of materials
    20. Polar regions
    21. Remote sensing
    22. Rings and dust
    23. Surface materials and properties
    24. Tectonics
    25. Volcanism
    26. Instruments and techniques
    27. General or miscellaneous
  33. PLANETARY SCIENCES: FLUID PLANETS
    1. Atmospheres
    2. Aurorae
    3. Composition
    4. Gravitational fields
    5. Interactions with particles and fields
    6. Interiors
    7. Ionospheres
    8. Magnetic fields and magnetism
    9. Magnetospheres
    10. Meteorology
    11. Orbital and rotational dynamics
    12. Origin and evolution
    13. Polar regions
    14. Rings and dust
    15. Tidal forces
    16. Tori and exospheres
    17. Instruments and techniques
    18. General or miscellaneous
  34. PLANETARY SCIENCES: COMETS AND SMALL BODIES
    1. Atmospheres
    2. Aurorae, airglow, and X-ray emission
    3. Composition
    4. Dust
    5. Erosion and weathering
    6. Gravitational fields
    7. Ices
    8. Impact phenomena
    9. Interactions with solar wind plasma and fields
    10. Comets: dust tails and trails
    11. Interiors
    12. Ionospheres
    13. Magnetic fields and magnetism
    14. Magnetospheres
    15. Orbital and rotational dynamics
    16. Origin and evolution
    17. Physics and chemistry of materials
    18. Plasma and MHD instabilities
    19. Surfaces
    20. Radiation and chemistry
    21. Volcanism
    22. Instruments and techniques
    23. General or miscellaneous
  35. PLANETARY SCIENCES: SOLAR SYSTEM OBJECTS
    1. Asteroids
    2. Asteroids: satellites
    3. Comparative planetology
    4. Comets
    5. Centaurs
    6. Dust
    7. Jovian satellites
    8. Io
    9. Europa
    10. Ganymede
    11. Callisto
    12. Jupiter
    13. Kuiper belt objects
    14. Mars
    15. Martian satellites
    16. Mercury
    17. Meteorites and tektites
    18. Meteors
    19. Moon
    20. Neptune
    21. Neptunian satellites
    22. Triton
    23. Planetary rings
    24. Pluto and satellites
    25. Saturn
    26. Saturnian satellites
    27. Titan
    28. Trans-Neptunian objects
    29. Uranian satellites
    30. Uranus
    31. Venus
    32. Extra-solar planets
    33. Instruments and techniques
    34. General or miscellaneous
  36. POLICY SCIENCES
    1. Benefit-cost analysis
    2. Decision making under uncertainty
    3. Demand estimation
    4. Institutions
    5. Legislation and regulations
    6. Project evaluation
    7. Regional planning
    8. System design
    9. System operation and management
    10. General or miscellaneous
  37. PUBLIC ISSUES
    1. Funding
    2. Legislation and regulations
    3. Science policy
    4. Workforce
    5. General or miscellaneous
  38. RADIO SCIENCE
    1. Electromagnetic noise and interference
    2. Interferometry
    3. Ionospheric physics
    4. Ionospheric propagation
    5. Magnetospheric physics
    6. Nonlinear phenomena
    7. Radar astronomy
    8. Radar atmospheric physics
    9. Radio astronomy
    10. Radio oceanography
    11. Radio wave propagation
    12. Remote sensing
    13. Signal processing
    14. Space and satellite communication
    15. Tomography and imaging
    16. Waves in plasma
    17. Instruments and techniques
    18. General or miscellaneous
  39. SEISMOLOGY
    1. Body waves
    2. Continental crust
    3. Core
    4. Mantle
    5. Earthquake dynamics
    6. Earthquake ground motions and engineering seismology
    7. Earthquake source observations
    8. Lithosphere
    9. Seismic monitoring and test-ban treaty verification
    10. Oceanic crust
    11. Paleoseismology
    12. Earthquake interaction, forecasting, and prediction
    13. Seismicity and tectonics
    14. Subduction zones
    15. Mid-ocean ridges
    16. Transform faults
    17. Surface waves and free oscillations
    18. Theory
    19. Tomography
    20. Volcano seismology
    21. Computational seismology
    22. Seismic instruments and networks
    23. General or miscellaneous
  40. SOLAR PHYSICS, ASTROPHYSICS, AND ASTRONOMY
    1. Celestial mechanics
    2. Chromosphere
    3. Corona
    4. Coronal holes
    5. Coronal mass ejections
    6. Energetic particles
    7. Flares
    8. Helioseismology
    9. Magnetic fields
    10. Magnetic reconnection
    11. Photosphere
    12. Prominence eruptions
    13. Radio emissions
    14. Solar activity cycle
    15. Solar and stellar variability
    16. Solar irradiance
    17. Stellar astronomy
    18. Stellar interiors and dynamo theory
    19. Transition region
    20. Ultraviolet emissions
    21. X-rays, gamma rays, and neutrinos
    22. Instruments and techniques
    23. General or miscellaneous
  41. SPACE PLASMA PHYSICS
    1. Active perturbation experiments
    2. Chaos
    3. Charged particle motion and acceleration
    4. Discontinuities
    5. Electrostatic structures
    6. Ionization processes
    7. Kinetic and MHD theory
    8. Kinetic waves and instabilities
    9. Laboratory studies and experimental techniques
    10. Magnetic reconnection
    11. Mathematical and numerical techniques
    12. MHD waves and instabilities
    13. Neutral particles
    14. Nonlinear phenomena
    15. Parametric processes
    16. Particle acceleration
    17. Plasma energization
    18. Plasma interactions with dust and aerosols
    19. Radiation processes
    20. Shock waves
    21. Solitons and solitary waves
    22. Spacecraft/atmosphere interactions
    23. Spacecraft sheaths, wakes, charging
    24. Stochastic phenomena
    25. Transport processes
    26. Turbulence
    27. Wave/particle interactions
    28. Wave/wave interactions
    29. Instruments and techniques
    30. General or miscellaneous
  42. SPACE WEATHER
    1. Geomagnetically induced currents
    2. Engineering for hazard mitigation
    3. Forecasting
    4. Impacts on technological systems
    5. Impacts on humans
    6. Ionospheric effects on radio waves
    7. Ionospheric storms
    8. Magnetic storms
    9. Models
    10. Policy
    11. Satellite drag
    12. Solar effects
    13. Space radiation environment
    14. General or miscellaneous
  43. STRUCTURAL GEOLOGY
    1. Continental neotectonics
    2. Diapir and diapirism
    3. Dynamics and mechanics of faulting
    4. Folds and folding
    5. Fractures and faults
    6. Kinematics of crustal and mantle deformation
    7. High strain deformation zones
    8. Local crustal structure
    9. Mechanics, theory, and modeling
    10. Melanges
    11. Mesoscopic fabrics
    12. Microstructures
    13. Rheology: crust and lithosphere
    14. Rheology: general
    15. Rheology: mantle
    16. Rheology and friction of fault zones
    17. Pluton emplacement
    18. Paleoseismology
    19. Regional crustal structure
    20. Remote sensing
    21. Role of fluids
    22. Instruments and techniques
    23. General or miscellaneous
  44. TECTONOPHYSICS
    1. Continental contractional orogenic belts and inversion tectonics
    2. Continental cratons
    3. Continental margins: convergent
    4. Continental margins: divergent
    5. Continental margins: transform
    6. Continental neotectonics
    7. Continental tectonics: compressional
    8. Continental tectonics: extensional
    9. Continental tectonics: general
    10. Continental tectonics: strike-slip and transform
    11. Core processes
    12. Dynamics and mechanics of faulting
    13. Dynamics of lithosphere and mantle: general
    14. Dynamics: convection currents, and mantle plumes
    15. Dynamics: gravity and tectonics
    16. Dynamics: seismotectonics
    17. Earth's interior: composition and state
    18. Evolution of the Earth
    19. Heat generation and transport
    20. Hydrothermal systems
    21. Impact phenomena
    22. Hotspots, large igneous provinces, and flood basalt volcanism
    23. Lithospheric flexure
    24. Obduction tectonics
    25. Ophiolites
    26. Physics of magma and magma bodies
    27. Planetary interiors
    28. Planetary volcanism
    29. Planetary tectonics
    30. Plate boundary: general
    31. Plate motions: general
    32. Plate motions: past
    33. Plate motions: present and recent
    34. Rheology: crust and lithosphere
    35. Rheology: general
    36. Rheology: mantle
    37. Rheology and friction of fault zones
    38. Stresses: crust and lithosphere
    39. Stresses: deep-seated
    40. Stresses: general
    41. Sedimentary basin processes
    42. Subduction zone processes
    43. Tectonics and landscape evolution
    44. Tectonics and climatic interactions
    45. Tectonics and magmatism
    46. Tomography
    47. Volcanic arcs
    48. Instruments and techniques
    49. General or miscellaneous
  45. VOLCANOLOGY
    1. Geochemical modeling
    2. Thermodynamics
    3. Reactions and phase equilibria
    4. Subduction zone processes
    5. Mid-oceanic ridge processes
    6. Intra-plate processes
    7. Hydrothermal systems
    8. Effusive volcanism
    9. Mud volcanism
    10. Subaqueous volcanism
    11. Explosive volcanism
    12. Planetary volcanism
    13. Volcanoclastic deposits
    14. Volcano/climate interactions
    15. Atmospheric effects
    16. Volcanic gases
    17. Lava rheology and morphology
    18. Magma migration and fragmentation
    19. Eruption mechanisms and flow emplacement
    20. Physics and chemistry of magma bodies
    21. Calderas
    22. Experimental volcanism
    23. Tephrochronology
    24. Remote sensing of volcanoes
    25. Field relationships
    26. Volcano monitoring
    27. Volcanic hazards and risks
    28. Instruments and techniques
    29. General or miscellaneous
  46. GEOGRAPHIC LOCATION
    1. Africa
    2. Antarctica
    3. Arctic region
    4. Asia
    5. Atlantic Ocean
    6. Australia
    7. Europe
    8. Indian Ocean
    9. Large bodies of water (e.g., lakes and inland seas)
    10. North America
    11. Pacific Ocean
    12. South America
    13. General or miscellaneous
  47. INFORMATION RELATED TO GEOLOGIC TIME
    1. Cenozoic
    2. Neogene
    3. Paleogene
    4. Mesozoic
    5. Cretaceous
    6. Jurassic
    7. Triassic
    8. Paleozoic
    9. Permian
    10. Carboniferous
    11. Devonian
    12. Silurian
    13. Ordovician
    14. Cambrian
    15. Precambrian
    16. Proterozoic
    17. Archean
    18. General or miscellaneous
  48. GENERAL OR MISCELLANEOUS
    1. Instruments useful in three or more fields
    2. New fields (not classifiable under other headings)
    3. Notices and announcements
    4. Techniques applicable in three or more fields
  49. CORRECTIONS