natural phenomenon
observable phenomenon which is not human-made
valence
measure of an element's combining capacity with other atoms when it forms chemical compounds or molecules
surge
event where a glacier can advance substantially
pancake ice
ice made of round pieces of ice with diameters of 30 cm–3 m and thickness up to 10 cm; features elevated rims formed by piling the frazil ice up the edges of pancakes when they collide
dark time
natural phenomen
Hydraulic redistribution
biological phenomenon
polar amplification
natural phenomenon
low water
low water level in a body of water
tidal bore
water wave traveling upstream a river or narrow bay due to incoming tide
blood rain
perceived blood-like rain typically caused by aerial spores of microalgae Trentepohlia annulata
moulin
well-like shaft within a glacier
beat
term in acoustics
beat
term in acoustics
ice disc
big circular ice floe (ca 1 m ... 50 m diameter) rotating on a river
red rain in Kerala
phenomenon observed sporadically during the summers in the southern Indian state
diamond ring effect
bright spot on the lunar edge since for a few seconds during a solar eclipse
cheerios effect
phenomenon that occurs when floating objects that don't normally float attract one another
season creep
phenomenon of seasons slowly changing their timing
seismic gap
segment of an active fault known to produce significant earthquakes that has not slipped in an unusually long time
meteorological phenomenon
phenomenon that takes place in the atmosphere
Sea level drop
drop relative to land rebounding from weight of ice
natural disaster
major adverse event resulting from natural processes of the Earth, which may cause loss of life or property
weather
state of the atmosphere
upwelling
replacement by deep water moving upwards of surface water driven offshore by wind
algal bloom
rapid increase or accumulation in the population of algae
ridge lift
type of wind
desert bloom
climatic phenomenon
freezing
weather condition with temperature of air below the freezing point of water (273 K, 0 °C)
coastal erosion
loss or displacement of land along a coastline
pyroclastic fall
Deposit of material ejected from a volcanic eruption
front
boundary between two water masses
Spanish plume
weather pattern
hydraulic jump
phenomenon occuring when liquid at high velocity discharges into a zone of lower velocity
meteor
meteorological term for a phenomenon observed in the atmosphere or on a planet's surface
Melt inclusions
feature of igneous rock
cold-water geyser
natural explosive eruption of cold water
Jellyfish bloom
proliferation of medusae
erosion
action of exogenic processes which remove soil and rock from one location on the Earth's crust, then transport it to another location where it is deposited
microseism
a faint earth tremor caused by natural phenomena
tidal resonance
phenomenon that occurs when the tide excites a resonant mode of a part of an ocean, producing a higher tidal range
pressure ridge
ridge formed in pack ice by accumulation of ice blocks in the convergence between floes
spring flood
increased flow in rivers caused by melting snow
earthquake precursor
natural phenomenon claimed to precede earthquakes
rocky-shore denudations
The phenomenon in which seaweed beds in coastal rocky areas, where seaweed normally grows abundantly , continue to decline dramatically beyond the range of normal seasonal and slight aging changes, causing the seaweed to no longer grow abundantly.
open channel hydraulics
Natural phenomenon
whiting event
phenomenon in which calcium carbonate precipitates in water bodies, often during summer, due to photosynthetic microbes or sediment disturbance
soil property
characteristic of soil