Editing Gravity (section)

=== Gravity wave ===
{{main|Gravity wave}}
Waves on oceans, lakes, and other bodies of water occur when the gravitational equilibrium at the surface of the water is disturbed by for example wind.<ref>{{Cite book |last=Young |first=I. R. |title=Wind generated ocean waves |date=1999 |publisher=Elsevier |isbn=978-0-08-043317-2 |edition=1st |series=Elsevier ocean engineering book series |location=Amsterdam ; New York}}</ref> Similar effects occur in the [[Atmospheric wave|atmosphere]] where equilibrium is disturbed by thermal [[weather fronts]] or mountain ranges.<ref>{{Cite journal |last=Fritts |first=David C. |last2=Alexander |first2=M. Joan |date=March 2003 |title=Gravity wave dynamics and effects in the middle atmosphere |url=https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2001RG000106 |journal=Reviews of Geophysics |language=en |volume=41 |issue=1 |doi=10.1029/2001RG000106 |issn=8755-1209}}</ref>