Editing Sonar (section)

=== Sonar in extraterrestrial contexts ===
The use of both active and passive sonar has been proposed for various extraterrestrial environments.<ref name="Leighton+Petculescu_editorial_2016">{{Cite journal|last1=Leighton|first1=T. G. |last2=Petculescu|first2=A. |date=1 August 2016|title=Acoustic and related waves in extraterrestrial environments| url=http://resource.isvr.soton.ac.uk/staff/pubs/PubPDFs/2016_-_Petculescu_and_Leighton_(Sound_in_space_peer_reviewed_editorial).pdf | journal=The Journal of the Acoustical Society of America|volume=140|issue=2|pages=1397–1399|doi=10.1121/1.4961539|pmid=27586765|issn=0001-4966|bibcode=2016ASAJ..140.1397L|doi-access=free}}</ref> One example is [[Titan (moon)|Titan]], where active sonar could be used to determine the depth of its [[Lakes of Titan|hydrocarbon seas]],<ref>Arvelo & Lorenz (2013), J Acoust Soc Am</ref> and passive sonar could be used to detect [[Climate of Titan|methanefalls]].<ref name="Leighton_et_al_Crete_space_2005">{{cite journal | last1 = Leighton| first1 = T. G. | last2 = White | first2 = P. R. | last3 = Finfer| first3 = D. C. | year = 2005 | title = The sounds of seas in space | url = http://resource.isvr.soton.ac.uk/staff/pubs/PubPDFs/Pub7849.pdf | journal = Proceedings of the International Conference on Underwater Acoustic Measurements, Technologies and Results, Heraklion, Crete, 28 June-1 July 2005 | volume = II |  pages = 833–840  }}</ref>

Proposals that do not take proper account of the difference between terrestrial and extraterrestrial environments could lead to erroneous measurements.<ref name="Ainslie+Leighton_2016">{{cite journal | last1 = Ainslie | first1 = M. A. | last2 = Leighton | first2 = T. G. | year = 2016 | title = Sonar equations for planetary exploration | url = http://resource.isvr.soton.ac.uk/staff/pubs/PubPDFs/2016-Ainslie-Leighton-(sound-in-space-sonar-equations).pdf| journal = The Journal of the Acoustical Society of America | volume = 140 | issue = 2| pages = 1400–1419 | doi=10.1121/1.4960786| pmid = 27586766 | bibcode = 2016ASAJ..140.1400A | doi-access = free }}</ref><ref name=Leighton_et_al_Icarus_2007>{{cite journal |author1=Leighton, T.G. |author2=Finfer, D.C. |author3=White, P.R. |title=The problems with acoustics on a small planet|url=http://resource.isvr.soton.ac.uk/staff/pubs/PubPDFs/Pub10172.pdf |journal=Icarus|year=2008 |volume=193 |issue=2 |pages=649–652 |doi= 10.1016/j.icarus.2007.10.008 |bibcode=2008Icar..193..649L }}</ref><ref name="Jiang_et_al_2011">{{Cite journal| pmid = 21877784| year = 2011| last1 = Jiang | first1 = J| title = Acoustic attenuation, phase and group velocities in liquid-filled pipes II: Simulation for Spallation Neutron Sources and planetary exploration|url=http://resource.isvr.soton.ac.uk/staff/pubs/PubPDFs/Pub12612.pdf | journal = The Journal of the Acoustical Society of America| volume = 130| issue = 2| pages = 695–706| last2 = Baik | first2 = K| last3 = Leighton | first3 = T.G.| doi = 10.1121/1.3598463| bibcode = 2011ASAJ..130..695J}}</ref><ref name="Leighton_Fluid_loading_2009">{{Cite journal |doi= 10.1121/1.3104628 |pmid=19425625 |title= Fluid loading effects for acoustical sensors in the atmospheres of Mars, Venus, Titan, and Jupiter|url=http://resource.isvr.soton.ac.uk/staff/pubs/PubPDFs/Pub11053.pdf |journal = The Journal of the Acoustical Society of America| volume = 125| issue=5 |pages= EL214–9 |year=2009 |last1= Leighton |first1=T.G.|bibcode=2009ASAJ..125L.214L |doi-access=free }}</ref><ref name=nearesonant>{{Cite journal| pmid = 19894796| year = 2009| last1 = Ainslie | first1 = M. A.| title = Near resonant bubble acoustic cross-section corrections, including examples from oceanography, volcanology, and biomedical ultrasound|url=http://resource.isvr.soton.ac.uk/staff/pubs/PubPDFs/Pub11442.pdf | journal = The Journal of the Acoustical Society of America| volume = 126| issue = 5| pages = 2163–75| last2 = Leighton| first2 = T. G.| doi = 10.1121/1.3180130| bibcode = 2009ASAJ..126.2163A}}</ref><ref name="Leighton_et_al_icy_moons_2012">{{cite journal |author1=Leighton, T.G. |author2=White, P.R. |author3=Finfer, D.C. |title=The opportunities and challenges in the use of extra-terrestrial acoustics in the exploration of the oceans of icy planetary bodies|journal=Earth, Moon, and Planets|url=http://resource.isvr.soton.ac.uk/staff/pubs/PubPDFs/Leighton%20et%20al%20%5bicy%20moons%5d.pdf |year=2012 |volume=109 |issue=1–4 |pages=99–116 |doi=10.1007/s11038-012-9399-6 |bibcode=2012EM&P..109...91L|s2cid=120569869}}</ref>