Editing Gravity current (section)

== Research ==
The first mathematical study of the propagation of gravity currents can be attributed to T. B. Benjamin.<ref>
{{cite journal
 |last=Benjamin |first=T. B.
 |year=1968
 |title=Gravity Current and Related Phenomena
 |journal=[[Journal of Fluid Mechanics]]
 |volume=31 |issue=2
 |pages=209–248
 |doi=10.1017/S0022112068000133
|bibcode = 1968JFM....31..209B |s2cid=6314493
 }}</ref> 
Observations of intrusions and collisions between fluids of differing density were made well before T. B. Benjamin's study, see for example those by Ellison and Tuner,<ref>{{Cite journal|last1=Ellison|first1=T. H.|last2=Turner|first2=J. S.|date=October 1959|title=Turbulent entrainment in stratified flows|url=https://www.cambridge.org/core/journals/journal-of-fluid-mechanics/article/abs/turbulent-entrainment-in-stratified-flows/4370CDB55B36F70597341BF061A820C7|journal=Journal of Fluid Mechanics|language=en|volume=6|issue=3|pages=423–448|doi=10.1017/S0022112059000738|doi-broken-date=2024-11-11 |bibcode=1959JFM.....6..423E|s2cid=121945070 |issn=1469-7645|url-access=subscription}}</ref> by M. B. Abbot<ref>
{{cite journal
 |last=Abbot |first=M. B.
 |year=1961
 |title=On the Spreading of one Fluid Over Another. Part II: The Wave Front
 |journal=[[La Houille Blanche]]
 |volume=47 |issue=6
 |pages=827–836
 |doi=10.1051/lhb/1961052
|doi-access=free
 }}</ref> 
or D. I. H. Barr.<ref>
{{cite journal
 |last=Barr |first=D. I. H.
 |year=1967
 |title=Densimetric Exchange Flows in Rectangular Channels
 |journal=[[La Houille Blanche]]
 |volume=22 |issue=6
 |pages=619–631
 |doi=10.1051/lhb/1967042
|doi-access=free
 |bibcode=1967LHBl...53..619B
 }}</ref><!--''(There are older ones, but can't find references now. Please edit if you know.)''--> 
J. E. Simpson from the Department of Applied Mathematics and Theoretical Physics of Cambridge University in the UK carried out longstanding research on gravity currents and issued a multitude of papers on the subject. He published an article<ref>
{{cite journal
 |last=Simpson |first=J. E.
 |year=1982
 |title=Gravity Currents in the Laboratory, Atmosphere, and Ocean
 |journal=[[Annual Review of Fluid Mechanics]]
 |volume=14 |pages=213–234
 |doi=10.1146/annurev.fl.14.010182.001241
|bibcode = 1982AnRFM..14..213S }}</ref> 
in 1982 for ''[[Annual Review of Fluid Mechanics]]'' which summarizes the state of research in the domain of gravity currents at the time. Simpson also published a more detailed book on the topic.<ref>
{{cite book
 |last=Simpson |first=J. E
 |year=1999
 |title=Gravity Currents: In the Environment and the Laboratory
 |publisher=[[Cambridge University Press]]
 |isbn=
}}</ref>