Njengoko sisazi, utshintsho lwemozulu luyakhula kwaye isantya siya kwenza iipali ziphinde. Iqela labaphandi bamazwe ngamazwe lakha ngokutsha imbali yakutshanje yokufudumala kolwandle kwisango eliya kuLwandlekazi lweArctic kummandla obizwa ngokuba yiFram Strait, phakathi kweGreenland neSvalbard. Besebenzisa imisayino yeekhemikhali efunyenwe kwiimicroorganisms zaselwandle, abaphandi bafumanisa ukuba uLwandlekazi lweArctic lwaqala ukufudumala ngokukhawuleza ekuqaleni kwenkulungwane edluleyo njengoko amanzi ashushu kunye netyuwa ephuma eAtlantiki, into ebizwa ngokuba yi-Atlantiki. Atlantisation, kwaye olu tshintsho mhlawumbi lwandulela ukufudumala.
Kweli nqaku siza kukuxelela konke malunga nophando lokunyibilika kwezibonda.
Investigación
Iqela labaphandi bamazwe ngamazwe lakha ngokutsha imbali yakutsha nje yokufudumala kolwandle kwindawo yokungena kuLwandlekazi lweArctic kwiFram Strait phakathi kweGreenland neSvalbard. Abaphandi basebenzise imisayino yemichiza efunyenwe kwiintsholongwane zaselwandle kwaye bafumanisa ukuba uLwandlekazi lweArctic lwaqala ukufudumala ngokukhawuleza njengoko amanzi olwandle ashushu, anetyuwa ephuma kuLwandlekazi lweAtlantiki ekuqaleni kwenkulungwane ephelileyo. Le nto ibizwa ngokuba yi-Atlantisation. Olu tshintsho lubaluleke kakhulu. Ukususela ngo-1900, ubushushu bolwandle bonyuke malunga ne-2 degrees Celsiusngelixa umkhenkce wolwandle uhlile kwaye netyuwa iyanda.
Iziphumo ezipapashwe kwiphephancwadi elithi "Science Advances" zibonelela ngembono yokuqala yembali kwi-Atlanticization ye-Arctic Ocean kwaye ityhila ukuba ukudibanisa ne-North Atlantic kunamandla kakhulu kunokuba bekucingwa ngaphambili.
Olu nxibelelwano lunokubumba utshintsho lwemozulu yeArctic, kwaye njengoko imikhenkce iqhubeka nokunyibilika, oku kunokuba nempembelelo enkulu ekucuthekeni komkhenkce wolwandle kunye nokunyuka kwamaqondo olwandle ehlabathi. Ngenxa yokutshintsha kwemozulu, zonke iilwandle zehlabathi ziyafudumala, Kodwa uLwandlekazi lweArctic lolona lwandle luncinane nolungekho nzulu ehlabathini, lolona lwandle lufudumeza ngokukhawuleza.
Atlantisation
Enkosi kwindlela yempendulo, izinga lokufudumala kweArctic lingaphezulu kabini kumndilili wehlabathi. Ngokusekelwe kwimilinganiselo yesathelayithi, siyazi ukuba uLwandle lweArctic lufudumala ngokuthe ngcembe, ngakumbi kule minyaka ingama-20 idlulileyo, kodwa sifuna ukubeka ubushushu bamva nje kumxholo obanzi. IAtlantisation sesinye sezizathu zokufudumala kweArctic, kodwa iirekhodi zezixhobo ezikwaziyo ukubeka esweni le nkqubo, ezifana neesathelayithi, zisusela emva malunga neminyaka engama-40. Njengoko uLwandlekazi lweArctic lufudumala, luya kubangela ukuba umkhenkce okwimimandla epholileyo unyibilike, nto leyo eya kuchaphazela umgangatho wolwandle wehlabathi.
Ngenxa yenkqubo yempendulo, izinga lokufudumala kwiArctic lingaphezulu kabini kumndilili wehlabathi. Ngokusekwe kwimilinganiselo yesathelayithi, siyazi ukuba njengoko ulwandle lunyibilika, lubeka ngakumbi umphezulu wolwandle elangeni, lukhupha ubushushu kunye nobushushu bomoya obunyusayo. Njengoko iArctic iqhubeka nokufudumala, iya kunyibilika i-permafrost, Igcina izixa ezikhulu zemethane, igesi yegreenhouse eyingozi ngakumbi kunekharbon diokside. Abaphandi basebenzise idatha ye-geochemical kunye ne-ecological evela kwi-sediments yolwandle ukuvuselela utshintsho kwiipropati ze-sediments zaselwandle kwikholamu yamanzi kwiminyaka eyi-800 edlulileyo.
Ngethemba sisenalo ixesha lokuyeka ukutshintsha kwemozulu.