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An diofar eadar na mùthaidhean a rinneadh air "Sionnachan-mara"

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Loidhne 1:
[[Image:Milky sea.jpg|thumb|200px|right|Milky seas effectSionnachan-mara]]
 
'S e '''sionnachan-mara''' an t-ainm air rud a gheibhear air a' chuan 's [[teine-sionnachan]] a' nochdadh air raon mòr dhen chuan, suas ri 6,000 mìle ceàrnagach dheth. 'S e [[lobhag|lobhagan]] a bhios ag adhbharachadh seo agus tha iad a' cruthachadh solas gorm uaigealta.
'''Milky seas''' is a condition on the open [[ocean]] where large areas of [[seawater]] (up to 6,000 square miles) are filled with [[bioluminescent]] [[bacteria]], causing the ocean to uniformly glow an eerie blue at night. The condition has been present in [[sailor|mariner]]'s tales for centuries – notably appearing in chapter 24 of [[Jules Verne]]'s ''[[Twenty Thousand Leagues Under the Sea]]'' – but until recently it has not been rigorously documented.
There have been 235 documented sightings of milky seas since 1915 - mostly concentrated in the north-western [[Indian Ocean]] and near Indonesia.
 
==Fionn-sgeulan==
In 1985 a research vessel in the [[Arabian Sea]] took water samples during milky seas. Their conclusions were that the effect was caused by the [[bacteria]] ''[[Vibrio harveyi]]''.
Tha iomadh fionn-sgeul a' toirt luaidh air an rud seo, a' dol air ais na ceudan de bhliadhnaichean agus bidh mòran eòlach air an sgeul aig [[Jules Verne]], [[Fichead mìle aitheamh fon mhuir]], far a bheil sionnachan-mara a' nochdadh.
 
==An saidheans==
In 2005, Steven Miller of the [[Naval Research Laboratory]] in [[Monterey, California]], was able to match 1995 [[Satellite images]] with a first-hand account of a merchant ship. U.S. [[Defense Meteorological Satellite Program]] showed the milky area to be approximately 15,400-km² (roughly the size of [[Connecticut]]). The luminescent field was observed to glow over three consecutive nights.
Cha deach rannsachadh saidheansail a dhèanamh air ach o chionn goirid, ged a chaidh a chlàradh 235 turas a-mach o 1915, gu h-àraidh ann an [[Cuan Innseanach|Cuan nan Innseachan]] faisg air an [[Innd-Innse]].
 
Shoirbhich le soitheach-rannsachaidh sa [[Muir Arabach|Mhuir Arabach]] sampall dhen t-sàil a thogail rè sionnachain-mhara agus cho-dhùin iad, an dèidh rannsachadh a dhèanamh air, gur e an lobhag ''[[Vibrio harveyi]]'' a tha 'ga adhbharachadh.
While monochromatic photos make this effect appear white, [[Monterey Bay Aquarium Research Institute]] scientist [[Steve Haddock]] (an author of a milky seas effect study) has commented, "the light produced by the bacteria is actually blue, not white. It is white in the graphic because of the monochromatic sensor we used, and it can appear white to the eye because the rods in our eye (used for night vision) don't discriminate color." [http://www.boingboing.net/2005/10/04/first_milky_sea_phot.html]
 
Chaidh aig neach-rannsachaidh, Steven Miller o dheuchainn-lann mara ann am [[Monterey, California|Monterey]] ann an 2005 [[Saideal|dealbh-saideil]] a cheangal ri cunntas a rinn soitheach-malairt air sionnachan-mara. A-rèir an deilbh, bha an làrach mu 15,400-km² a mheud agus bha e a' dol fad trì oidhcheannan.
== References and further reading ==
 
*[http://www.lifesci.ucsb.edu/~biolum/organism/milkysea.html Detailed discussion and images of milky sea observation]▼
Ged a tha coltas geal air ann an dealbhan, tha solas nan lobhagan gorm ach a chionn 's nach eil e ri fhaicinn ach air an oidhche, chan fhaic mac an duine ach solas geal dheth.
*[http://news.bbc.co.uk/1/hi/sci/tech/3760124.stm BBC News: 'Milky seas' detected from space]▼
 
== Tùsan is barrachd leugaidh ==
▲*[http://www.lifesci.ucsb.edu/~biolum/organism/milkysea.html DetailedBarrachd discussionfiosrachaidh andmu images of milky sea observationshionnachan-mara]
▲*[http://news.bbc.co.uk/1/hi/sci/tech/3760124.stm BBCNaidheachd News:mu 'Milkyshionnachan-mara seasair a' detected from spaceBBC]
*Miller, S.D., S.H.D. Haddock, C.D. Elvidge, T.F. Lee. Detection of a bioluminescent milky sea from space. Proceedings of the National Academy of Sciences. v102:14181-14184 [http://www.pnas.org/cgi/content/abstract/102/40/14181?maxtoshow=&HITS=10&hits=10&RESULTFORMAT=&fulltext=Milky+seas&searchid=1&FIRSTINDEX=0&resourcetype=HWCIT Abstract]
*Nealson, K.H. and J.W. Hastings (2006) Quorum sensing on a global scale: massive numbers of bioluminescent bacteria make milky seas Appl. Environ. Microbiol. 72:2295-2297. [http://aem.asm.org/cgi/content/full/72/4/2295?maxtoshow=&HITS=10&hits=10&RESULTFORMAT=&author1=hastings&author2=nealson&searchid=1&FIRSTINDEX=0&resourcetype=HWCIT Manuscript]
*[http://www.pamina38.com/blog/2006_08_01_archive.html: Milky Sea Account from a sailing yacht in the India Ocean 2006]
 
{{plankton}}
 
[[Category:BioluminescenceBith-eòlas]]
[[Category:Biological oceanographyMuir]]
[[Category:Aquatic ecology]]
 
[[ar:بحر محترق]]
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