- S wave
- S-C fabric
- S-tectonite
- S-type Granite
- S-type magma
- S-wave
- Saalic orogeny
- sabach
- Sabinas
- sabkha
- sabulous
- sackungen
- saddle
- saddle fold
- saddle point
- saddle reef
- saddle vein
- saddleback
- sag
- sag pond
- sag-and-swell topography
- sagenitic
- sahel
- Saint Peter sandstone
- Sakmarian
- Salado formation
- salcrete
- salfemic rock
- salic
- salient
- saliferous stratum
- salina
- Salina Beds
- salinastone
- saline soil
- saline-alkali soil
- salinelle
- saliniferous stratum
- salinity
- salinity current
- salinization
- salt anticline
- salt bottom
- salt burst
- salt crust
- salt dome
- salt field
- salt flat
- salt flowers
- salt glacier
- salt haze
- salt hill
- salt lake
- salt pan
- salt pillow
- salt pit
- salt plug
- salt polygon
- salt stock
- salt tectonics
- salt wall
- salt water
- salt weathering
- salt-affected soil
- salt-and-pepper sand
- salt-dome breccia
- salt-water front
- salt-water intrusion
- salt-water underrun
- salt-water wedge
- Saltation
- saltation load
- saltierra
- saltpeter cave
- saltpeter earth
- Sand
- sand apron
- sand auger
- sand avalanche
- sand cay
- sand cone
- sand crystal
- sand devil
- sand dike
- sand drift
- sand drip
- sand dune
- sand flat
- sand flood
- sand gall
- sand glacier
- sand hole
- sand horn
- sand levee
- sand lobe
- sand pavement
- sand pipe
- sand plain
- sand reef
- sand ridge
- sand river
- sand roll
- sand run
- sand sea
- sand shadow
- sand sheet
- sand snow
- sand streak
- sand stream
- sand strip
- sand wave
- sand wedge
- sand-shale ratio
- sandbag
- sandbank
- sandbar
- sandblasting
- sandfall
- sandhill
- sandkey
- sandrock
- sandshale
- sandspit
- sandsplay
- Sandstone
- sandstone dike
- sandstone sill
- sandstorm
- sandur
- sandwash
- Sangamon
- sanidal
- Sanidine
- sansar
- sansicl
- Santa Ana
- Santa Rosa storm
- Santonian
- Sapphire
- sapping
- Saprist
- saprogenous ooze
- saprolite
- saprolith
- sapropel
- sapropel-clay
- sapropel-peat
- sapropelic coal
- sapropelite
- sarca
- Sardic orogeny
- Sargasso Sea
- Sarmatian
- sarnaite
- sarospatakite
- sastruga
- satellite meteorology
- satellitic crater
- sathrolith
- satin ice
- saturated air
- saturated permafrost
- saturated surface
- saturated zone
- saturation
- saturation adiabat
- saturation curve
- saturation deficit
- saturation mixing ratio
- saturation ratio
- saturation-adiabatic lapse rate
- saturation-adiabatic process
- Saucesian
- sault
- Saussurite
- saussuritization
- savanna climate
- savic orogeny
- saw-cut
- Saxonian
- scabland
- scabrock
- scaglia
- scale height
- scales of motion
- scallop
- scalloped upland
- scalloping
- scalped anticline
- scanning electron microscope
- Scapolite
- scapolitization
- scar
- scarp
- scarp face
- scarp slope
- scarp stream
- scarp-foot spring
- scarped plain
- scarpland
- scarplet
- scarpline
- scattered
- scattering layer
- scaur
- scavenger well
- scaw
- scharnitzer
- Scheelite
- Schist
- schistose
- Schistosity
- Schlernwind
- schlieren arch
- schlieren dome
- Schmidt net
- Schmidt projection
- Schorl
- Schorl Rock
- schott
- schrund line
- Schumann resonance
- schungite
- schuppen structure
- Schwazite
- scissors fault
- sclerotinite
- Scolecite
- scolite
- scopulite
- score
- Scoria
- scoria cone
- scoria mound
- scoriatuff
- scoring
- Scorodite
- Scotch mist
- Scotch-type volcano
- scour
- scour and fill
- scour channel
- scour depression
- scour lineation
- scour mark
- scouring
- scouring velocity
- scourway
- scree
- screened pan
- screw dislocation
- screw ice
- scroll
- scroll meander
- scud
- Scythian stage
- sea
- sea arch
- sea ball
- sea bottom
- sea breeze
- sea breeze of the second kind
- sea bridge
- sea cave
- sea channel
- sea chasm
- sea cliff
- sea fan
- sea floor
- sea fog
- sea front
- sea gate
- sea glow
- sea gully
- sea ice
- sea knoll
- sea level
- sea meadow
- sea mist
- sea mud
- sea ooze
- sea peak
- sea salt
- sea slope
- sea smoke
- sea state
- sea terrace
- sea turn
- sea valley
- sea-captured stream
- Sea-Floor Spreading
- sea-ice shelf
- sea-level chart
- sea-level pressure
- sea-level pressure chart
- sea-salt nucleus
- sea-surface slope
- seabeach
- seabed
- seacoast
- sealing-wax structure
- seam
- Seamount
- seamount chain
- seamount group
- seamount range
- seaquake
- seascape
- seascarp
- seashore
- seashore lake
- seaside
- season
- seasonal current
- seasonal recovery
- seasonal stream
- seasonal thermocline
- seasonal variation
- seasonally frozen ground
- seastrand
- seat clay
- seat earth
- seawall
- seawater
- sebcha
- sebka
- sebkha
- seca
- sechard
- seclusion
- second bottom
- second-derivative map
- second-foot
- second-foot day
- second-order climatological station
- second-order relief
- second-order station
- second-year ice
- secondary
- secondary circle
- secondary clay
- secondary coast
- secondary cold front
- secondary consequent stream
- secondary consolidation
- secondary cosmic rays
- secondary crater
- secondary cyclone
- secondary electron
- secondary electron mode
- secondary enrichment
- secondary foliation
- secondary front
- secondary geosyncline
- secondary glacier
- secondary great circle
- secondary interstices
- secondary ionization mass spectrometry
- secondary low
- Secondary minerals
- secondary pollutant
- secondary porosity
- secondary reflection
- secondary stratification
- secondary stratigraphic trap
- secondary structure
- secondary tectonite
- secondary wave
- secretion
- section
- sector
- sector wind
- sector zoning
- secular variation
- secundine dike
- sedentary soil
- sedifluction
- Sediment
- sediment charge
- sediment concentration
- sediment discharge
- sediment discharge rating
- sediment load
- sediment station
- sediment vein
- sediment yield
- sediment-delivery ratio
- sediment-production rate
- sediment-transport rate
- sedimentary cycle
- sedimentary differentiation
- sedimentary dike
- sedimentary facies
- sedimentary insertion
- sedimentary intrusion
- sedimentary laccolith
- sedimentary lag
- Sedimentary Rock
- Sedimentary Structure
- sedimentary tectonics
- sedimentary trap
- sedimentary tuff
- sedimentary volcanism
- Sedimentation
- sedimentation basin
- sedimentation curve
- sedimentation diameter
- sedimentation radius
- sedimentation rate
- sedimentation trend
- sedimentation trough
- sedimentation unit
- sedimentology
- Seelandian
- seep
- Seepage
- seepage face
- seepage lake
- segregated ice
- segregated vein
- segregation
- seiche
- Seif Dune
- seismic activity
- seismic anisotropy
- seismic area
- seismic belt
- Seismic Discontinuity
- seismic efficiency
- seismic event
- seismic gradient
- seismic hazard
- seismic intensity
- seismic map
- seismic prospecting
- seismic ray
- seismic reflector
- seismic risk
- seismic stratigraphy
- seismic tomography
- seismic velocity
- seismic vertical
- seismic-electric effect
- Seismicity
- seismology
- seistan
- sejunction water
- selatan
- selective fusion
- selective replacement
- Selenite
- selenite butte
- self-reversal
- self-rising ground
- SEM
- semianthracite
- semiarid climate
- semibituminous coal
- semibolson
- semibright coal
- semicratonic
- semidiurnal
- semidiurnal current
- semidiurnal tide
- semidull coal
- semifusinite
- semisplint coal
- Senecan
- senescence
- senescent lake
- senesland
- senile
- senility
- Senonian
- sensible atmosphere
- sensible temperature
- sensible-heat flow
- sensitive clay
- sensitivity
- separate
- separation
- separatrix
- Sepiolite
- septarian
- septarian boulder
- septarian nodule
- septarium
- Sequanian
- sequence
- sequence of current
- sequence of tide
- sequence stratigraphy
- sequential landform
- serac
- serein
- serial observation
- serial station
- seriate
- seriate fabric
- sericitization
- series
- serpent kame
- Serpentine
- serpentine spit
- serpentinization
- serrate
- serrate ridge
- Service Well
- seston
- set
- settled
- settled snow
- settlement
- settling
- Settling Pond
- severe storm
- severe weather
- severe-storm observation
- Sevier orogeny
- sferics
- sferics observation
- sfericsfix
- SGR
- shadow zone
- shaft
- shake wave
- Shale
- shale ball
- shale break
- shale crescent
- shale ice
- shale reservoir
- shalification
- shallow fog
- shallow inland seas
- shallow marginal seas
- shallow water
- shallow well
- shallow-focus earthquake
- shallow-water wave
- shallows
- shaluk
- shaly
- shaly bedding
- shamal
- shantung
- Shantung soil
- shape preferred orientation (SPO)
- shard
- shark-tooth projection
- sharki
- sharkskin pahoehoe
- sharp sand
- sharp-edged gust
- sharpstone
- shatter cone
- shatter zone
- sheaf structure
- shear band
- shear band boudinage
- shear band cleavage
- shear cleavage
- shear fold
- shear fracture
- shear joint
- shear line
- shear moraine
- shear plane
- shear sense indicator
- shear slide
- shear sorting
- shear strain
- shear stress
- shear structure
- shear surface
- shear vein
- shear wave
- shear zone
- shear-gravity wave
- sheath fold
- sheer
- sheet
- sheet crack
- sheet deposit
- sheet drift
- sheet erosion
- sheet flow
- sheet frost
- sheet ice
- sheet joint
- sheet lightning
- sheet sand
- sheet sandstone
- sheet spar
- sheet structure
- sheeted fissure
- sheeted vein
- sheetedzone
- sheetflood
- sheetflood erosion
- sheeting
- sheeting structure
- sheetwash
- shelf
- shelf break
- shelf channel
- shelf edge
- shelf facies
- shelf ice
- shelf sea
- shelfstone
- shell
- shell ice
- shell marl
- shell sand
- shelly
- shelly facies
- shelly pahoehoe
- shelter cave
- shelter porosity
- shergottite
- shield
- shield basalt
- shield cone
- shield volcano
- shielding factor
- shielding layer
- shift
- shifting
- shimmer
- shingle
- shingle barchan
- shingle beach
- shingle rampart
- shingle ridge
- shingle structure
- shingle-block structure
- shingling
- ship drift
- ship report
- ship synoptic code
- shoal
- shoal patches
- shoal reef
- shoal water
- shoaling
- shock lithification
- shock loading
- shock melting
- shock zone
- shoestring
- shoestring rill
- shoestring sand
- shoot
- shore
- shore current
- shore drift
- shore ice
- shore lead
- shore platform
- shore polyn'ya
- shore terrace
- shoreface
- shoreface terrace
- shoreline
- shoreline cycle
- shoreline of depression
- shoreline of elevation
- shoreline of emergence
- shoreline of submergence
- shoreline-development ratio
- shoreside
- Short Ton
- short wave
- short-crested wave
- short-range forecast
- shot copper
- shoulder
- shoved moraine
- Showalter stability index
- shower
- SHRIMP
- shrinkage
- shrinkage crack
- shrinkage index
- shrinkage limit
- shrinkage pore
- shrinkage ratio
- shrub-coppice dune
- shuga
- shungite
- Shut In
- shutterridge
- Siberian anticyclone
- Siberian high
- sibjet
- SID
- side canyon
- side stream
- sideraerolite
- Siderite
- sideroferrite
- siderolite
- sideronitic texture
- siderophyre
- siderophyry
- siderosphere
- sideswipe
- sierozem
- sierra
- sieve deposition
- sieve lobe
- siffanto
- sigma-T
- sigmoid
- sigmoidal dune
- sigmoidal fold
- significant wave
- Signing Bonus
- sigua
- sikussak
- silcrete
- silexite
- Silica
- silica sand
- Silicates
- silication
- siliceous earth
- siliceous ooze
- siliceous sediment
- silicification
- silicified wood
- silicinate
- silification
- silk
- Silky
- Sill
- sill depth
- silled basin
- Sillimanite
- silt
- silt discharge rating
- silt loam
- silt soil
- silting
- siltite
- Siltstone
- silttil
- Silurian
- Silver
- silver frost
- silver storm
- silver thaw
- similar fold
- simoom
- simple crater
- simple cross-bedding
- simple ore
- simple shear
- simple shear flow
- simple spit
- simple valley
- SIMS
- Sinemurian
- singing sand
- single-cycle mountain
- single-station analysis
- single-theodolite observation
- singular corresponding point
- singularity
- sinistral fault
- sinistral fold
- sink
- Sinkhole
- sinkhole plain
- sinking
- siphon
- sirocco
- skarn
- skauk
- skavl
- skeleton grain
- skeleton layer
- skerry
- skid boulder
- Skiddavin
- skill score
- skim ice
- skimming
- skin-friction coefficient
- skiou
- skip cast
- skip mark
- skiron
- Skutterudite
- sky cover
- sky map
- slab
- slab jointing
- slab pahoehoe
- slack
- slack ice
- slack water
- slaking
- Slate
- slate ribbon
- slaty cleavage
- sleet
- slice
- slice method
- slick
- slickenfibre vein
- slickenfibres
- slickenlines
- slickens
- slickenside
- slickolite
- slide
- sliding
- sliding scale
- sliming
- slip
- slip bedding
- slip block
- slip cleavage
- slip face
- slip fold
- slip joint
- slip plane
- slip sheet
- slip surface
- slip system
- slip-off slope
- slope
- slope correction
- slope current
- slope failure
- slope gully
- slope stability
- slope wash
- slough
- slough ice
- slow ion
- slud
- sludge
- sludge cake
- sludge floe
- sludge ice
- sludge lump
- sludging
- slump
- slump ball
- slump basin
- slump bedding
- slump fault
- slump fold
- slump overfold
- slump scarp
- slump sheet
- slump structure
- slurry bedding
- slurry slump
- slush
- slush avalanche
- slush ball
- slush field
- slush icing
- slush pond
- slushflow
- small circle
- small diurnal range
- small hail
- small ice floe
- small ion
- small tropic range
- small-craft warning
- small-ion combination
- Smithsonite
- smog
- smoke horizon
- smokes
- smooth
- smooth chert
- smooth phase
- smooth sea
- smothered bottom
- SMOW
- snaking stream
- snap
- SNC group
- snezhura
- sno
- snout
- snow
- snow accumulation
- snow avalanche
- snow banner
- snow barchan
- snow blink
- snow cap
- snow climate
- snow cloud
- snow concrete
- snow course
- snow cover
- snow crust
- snow crystal
- snow cushion
- snow density
- snow dune
- snow dust
- snow eater
- snow flurry
- snow forest climate
- snow gage
- snow garland
- snow geyser
- snow glide
- snow grains
- snow ice
- snow line
- snow mantle
- snow medano
- snow niche
- snow patch erosion
- snow pellets
- snow plume
- snow ripple
- snow roller
- snow sampler
- snow sky
- snow sludge
- snow slush
- snow smoke
- snow stage
- snow survey
- snow swamp
- snow tremor
- snow-cover chart
- snowball garnet
- snowbank glacier
- snowbridge
- snowcreep
- snowcrete
- snowdrift
- snowdrift glacier
- snowdrift ice
- snowfall
- snowfield
- snowflake
- snowflush
- snowmelt
- snowpack
- snowquake
- snowshed
- snowslide
- snowstorm
- Soapstone
- socked in
- soda lake
- Sodalite
- Sodium Tetraborate
- soffione
- soffosian knob
- soft coal
- soft hail
- soft rime
- softening
- Sohm Abyssal Plain
- soil
- soil air
- soil atmosphere
- soil blister
- soil chemistry
- soil colloid
- soil complex
- soil creep
- soil element
- soil erosion
- soil flow
- soil fluction
- soil formation
- soil genesis
- soil moisture
- soil physics
- soil profile
- soil science
- soil separate
- soil series
- soil shear strength
- soil stripes
- soil structure
- soil survey
- soil water
- soil-water belt
- soil-water zone
- sol-air temperature
- solaire
- solano
- solar absorption index
- solar air mass
- solar atmospheric tide
- solar climate
- solar constant
- solar evaporation
- solar tide
- solar wind
- solar-radiation observation
- solar-terrestrial phenomena
- solar-topographic theory
- sole
- sole injection
- sole mark
- sole plane
- solenoid
- solenoidal index
- solfatara
- solifluction
- solifluction lobe
- solifluction mantle
- solifluction sheet
- solifluction stream
- solifluction tongue
- Solod soil
- solodize
- Solonchak soil
- Solonetzsoil
- solore
- Soloth soil
- solstitial tidal currents
- solstitial tides
- solum
- Solution
- solution groove
- solution pool
- solution potholes
- solution transfer
- Somali Current
- somma
- Sonic Logs
- sonora
- sordawalite
- sorotiite
- sorted
- sorted polygon
- sorting
- sorting coefficient
- sorting index
- sou'easter
- sou'wester
- sounding
- sounding sand
- source area
- source bed
- source region
- source rock
- sourceland
- south
- South America
- South Atlantic Current
- South Equatorial Current
- south foehn
- south frigid zone
- south geographical pole
- south geomagnetic pole
- South Indian Current
- South Pacific Current
- South Pole
- south temperate zone
- Southeast Drift Current
- southeaster
- souther
- southerly burster
- southern lights
- Southern Polar Front
- southwester
- space charge
- space weather
- spaced foliation
- spall
- spalling
- sparagmite
- Sparnacean
- sparry cement
- spasmodic turbidity current
- spatial autocorrelation
- spatial dendrite
- spatial dendritic crystal
- spatter cone
- spatter rampart
- special observation
- special weather report
- species number
- specific energy
- Specific gravity
- specific humidity
- specific retention
- specific yield
- specific-volume anomaly
- spelean
- speleology
- speleothem
- spending beach
- spergenite
- Sperrylite
- Sphalerite
- Sphene
- sphenochasm
- sphenolith
- spherical weathering
- spheroidal recovery
- spheroidal weathering
- spherulite
- spill stream
- spilling
- spilling breaker
- spillover
- spin
- Spinel
- spiral band
- spiral layer
- spiral Si-garnet
- spit
- Spitsbergen Current
- splash erosion
- splent coal
- spliced
- splint
- splint coal
- split
- SPO
- spodic horizon
- Spodosol
- Spodumene
- spongework
- spongolite
- spongolith
- spontaneous nucleation
- Spontaneous Potential Logs
- sporadic E layer
- sporinite
- spot wind
- spouting horn
- spray region
- spreading concept
- spreading-floor hypothesis
- spring
- spring crust
- spring high water
- spring low water
- spring range
- spring rise
- spring seepage
- spring sludge
- spring snow
- spring tidal currents
- spring tide
- spring velocity
- sprinkle
- sprite
- spur
- squall
- squall cloud
- squall line
- stability
- stability chart
- stability index
- stack
- stacking fault
- stade
- stadial moraine
- Staffordian
- stage
- stagnant glacier
- stagnant water
- stagnation
- stagnum
- stair-stepping
- Stalactite
- stalacto-stalagmite
- Stalagmite
- Stampian
- stamukha
- stand
- standard artillery atmosphere
- standard artillery zone
- standard atmosphere
- standard mean ocean water
- standard meridian
- standard parallel
- standard pressure
- standard project flood
- standard seawater
- standard station
- standard visibility
- standard visual range
- standing cloud
- standing water
- starved basin
- state of the sea
- state of the sky
- static level
- static metamorphism
- static oceanography
- static recrystallisation
- static stability
- station continuity chart
- station elevation
- station model
- station pressure
- stationary front
- statistical forecast
- Staurolite
- steadiness
- steady-state fabric
- steam fog
- steam mist
- Steatite
- steatization
- steering
- steering level
- Stefan's formula
- steinkern
- stellar lightning
- step
- step fault
- step lake
- step-out time
- Stephanian
- Stephanite
- steppe
- steppe climate
- stepped leader
- steptoe
- steric anomaly
- stewartite
- Stibnite
- Stilbite
- still water
- still well
- still-water level
- stillstand
- Stinkstone
- stock
- stockwork
- stone
- stone bubble
- Stone coal
- stone ice
- stone polygon
- stone ring
- stony meteorite
- stony-iron meteorite
- stooping
- storage equation
- storage routing
- storm
- storm beach
- storm center
- storm delta
- storm detection
- storm ice foot
- storm microseism
- storm model
- Storm Sewer
- Storm Surge
- storm tide
- storm track
- storm transposition
- storm warning
- storm wave
- storm wind
- storm-warning signal
- storm-warning tower
- stoss
- stoss-and-lee topography
- Strain
- strain cap
- strain ellipse
- strain ellipsoid
- strain fringe
- strain hardening
- strain rate
- strain shadow
- strain softening
- strain-free
- strain-slip
- strain-slip cleavage
- strait
- strand
- strand flat
- stranded ice
- stranded ice foot
- stranded-floe ice foot
- strandline
- Strata
- strath
- strath terrace
- Stratification
- stratification index
- stratification plane
- Stratified
- stratified drift
- stratified ocean
- stratiform
- stratiformis
- stratigrapher
- stratigraphic geology
- stratigraphic map
- stratigraphic oil fields
- stratigraphic separation
- Stratigraphic Sequence
- stratigraphic throw
- stratigraphic trap
- stratigraphic unit
- Stratigraphy
- stratocumulus
- stratopause
- stratosphere
- stratosphere radiation
- stratospheric coupling
- stratospheric ozone
- stratospheric steering
- stratotype
- Stratovolcano
- Stratum
- stratus
- stray
- stray sand
- strays
- Streak
- streak lightning
- Streak Plate
- stream
- stream capacity
- stream channel
- stream current
- stream erosion
- stream frequency
- stream gradient
- stream load
- stream morphology
- Stream Order
- stream profile
- stream segment
- stream slope
- stream terrace
- stream tin
- stream transport
- stream-built terrace
- stream-channel form ratio
- stream-gradient ratio
- stream-length ratio
- streamer
- streamflow
- streamflow routing
- streamsink
- streamway
- strength of current
- strength of ebb
- strength of flood
- strength-of-ebb interval
- strength-of-flood interval
- Stress
- stress and strain difference
- stress corrosion cracking
- stretch
- stretch fault
- stretch thrust
- stretched pebbles
- stretching lineation
- stretching rate
- striae (singular stria)
- striated ground
- striation
- Striations
- Strike
- strike fault
- strike joint
- strike separation
- strike slip
- strike stream
- strike-separation fault
- strike-shift fault
- Strike-Slip Fault
- string
- stringer
- stringer lode
- striped gneiss
- striped ground
- striped shear vein
- striped soil
- stripped plain
- stripped structural surface
- stripped surface
- stroke density
- stromatite
- Stromatolite
- stromatolith
- strombolian
- Strombolian Eruption
- strong breeze
- strong gale
- Strontianite
- structural bench
- structural contour map
- structural geology
- structural high
- structural low
- structural terrace
- structural trap
- structural valley
- structure
- structure contour
- structure map
- structure section
- structure-contour map
- Stuve chart
- stylolite
- subaerial
- subage
- subalkaline
- Subantarctic Intermediate Water
- subaqueous
- subaqueous dune
- subarctic
- subarctic climate
- subarid
- subarkose
- subartesian well
- subbituminouscoal
- subbottom reflection
- subcapillary interstice
- subconchoidal
- subconsequent stream
- subcontinent
- subcrop
- subduction
- Subduction Zone
- subduction zones
- suberinite
- subfeldspathic
- subgelisol
- subgeostrophic wind
- subglacial
- subglacial moraine
- subgradient wind
- subgrain
- subgrain boundary (or subgrain wall)
- subgrain rotation recrystallisation
- subgrain wall
- subhedral crystal
- subhumid climate
- subjacent
- subjacent igneous body
- sublacustrine
- sublacustrine channel
- Sublimation
- sublimation nucleus
- sublimation vein
- sublittoral zone
- submagmatic flow
- submarine
- Submarine Canyon
- submarine cave
- submarine delta
- submarine earthquake
- submarine fan
- submarine geology
- submarine isthmus
- submarine peninsula
- submarine pit
- submarine plain
- submarine relief
- submarine spring
- submarine station
- submarine topography
- submarine trench
- submarine trough
- submarine valley
- submarine weathering
- submarine well
- submerged breakwater
- submerged coastal plain
- submerged lands
- submerged shoreline
- submergence
- subophitic microstructure
- subpolar anticyclone
- subpolar glacier
- subpolar high
- subpolar low-pressure belt
- subpolar westerlies
- subsea apron
- subsequent
- subsequent drainage
- subsequent fold
- subsequent stream
- subsequent valley
- Subsidence
- subsidence inversion
- subsidiary fracture
- subsoil
- subsoil ice
- substratosphere
- substratum
- subsurface contour
- subsurface current
- subsurface flow
- subsurface geology
- subterranean ice
- subterranean stream
- subtropic
- subtropical anticyclone
- Subtropical Convergence
- subtropical cyclone
- subtropical easterlies
- subtropical easterlies index
- subtropical high
- subtropical high-pressure belt
- subtropical westerlies
- succession
- sudburite
- sudden commencement
- sudden ionospheric disturbance
- suestada
- suevite
- sugar berg
- sugar snow
- sugarloaf sea
- sukhovei
- sulfofication
- sulfophile element
- sulfur ball
- sulfur spring
- sulfur-mud pool
- sullage
- Sulphates
- Sulphides
- Sulphur
- sultriness
- sumatra
- summation principle
- summit plain
- sun crack
- sun cross
- sun crust
- sun drawing water
- sun pillar
- sunlit aurora
- superadiabatic lapse rate
- supercapillary interstice
- supercell
- Supercontinent
- supercooled cloud
- supercritical flow
- superfault
- superficial deposit
- supergeostrophic wind
- superglacial
- supergradient wind
- supergroup
- superimposed
- superimposed drainage
- superimposed fan
- superimposed fold
- superimposed glacier
- superimposed stream
- superimposed valley
- superincumbent
- superinduced stream
- superior air
- superior tide
- superjacent
- superjacent waters
- supermature
- superplastic deformation
- Superposed Stream
- Superposition
- superprint
- superrefraction
- superresolution
- Supersaturated Solution
- supersaturation
- supply current
- supracrustal rocks
- supragelisol
- supralateral tangent arcs
- suprapermafrost layer
- supratidal sediment
- supratidal zone
- Surf
- surf beat
- surf ripple
- Surf Zone
- surface boundary layer
- surface chart
- surface creep
- surface current
- surface deposit
- surface detention
- surface drainage
- surface duct
- surface flow
- surface forces
- surface friction
- surface geology
- surface hoar
- surface inversion
- surface layer
- surface map
- surface of discontinuity
- surface phase
- surface pressure
- surface retention
- surface runoff
- surface soil
- surface storage
- surface temperature
- surface visibility
- surface wash
- surface water
- Surface Wave
- surface weather observation
- surface wind
- surface-related fractures
- surficial creep
- surficial deposit
- surficial geology
- surge
- surge line
- surging breaker
- surging glacier
- suroet
- Suspended Load
- suspended water
- Suspension
- suspension current
- suspension load
- suture
- swale
- swallow hole
- Swash
- swash mark
- swell
- swell direction
- swell forecast
- swell-and-swale topography
- swelled ground
- swelling clay
- Swinestone
- Syenite
- Sylvanite
- Sylvite
- Symbiosis
- symmetric ripple mark
- symmetrical fold
- symmict
- symon fault
- symplectite
- synaeresis fractures
- synantexis
- synchronous
- synchronous pluton
- synclinal axis
- synclinal valley
- Syncline
- synclinorium
- syngenesis
- syngenetic
- synkinematic
- synoptic
- synoptic chart
- synoptic climatology
- synoptic code
- synoptic meteorology
- synoptic model
- synoptic oceanography
- synoptic report
- synoptic scale
- synoptic wave chart
- synoptic weather observation
- synorogenic
- syntaxial fringe
- syntaxial vein
- syntaxy
- syntectic
- syntectonic
- syntexis
- synthem
- synthetic
- syssiderite
- System
- systematic joints
- systems tract
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