Ucwaningo Lomphumela Wesimo Sezulu Olwandle
Ithonya lesimo sezulu olwandle liyisihloko esibalulekile ku-oceanography kanye nemvelo. Ulwandle olukhulu lumboza ngaphezu kuka-70% wobuso boMhlaba, ludlala indima ebalulekile ekulawuleni isimo sezulu somhlaba kanye nasezindaweni ezahlukene zemvelo. Ukuqonda ukusebenzisana phakathi kwesimo sezulu nolwandle kunganikeza ukuqonda okubalulekile ngokushintsha kwesimo sezulu, impilo yasolwandle, kanye nemiphumela yaso yezomnotho neyezenhlalo. Lesi sihloko sizohlola izici ezahlukahlukene zethonya lesimo sezulu olwandle, okuhlanganisa izimo zesimo sezulu esibi kakhulu , imimoya, amazinga okushisa, kanye nesimo sezulu somhlaba wonke.
1. Isimo Sezulu Esibi Kakhulu Nezimo Zasolwandle
Izimo zezulu ezimbi kakhulu, njengeziphepho zasezindaweni ezishisayo, izivunguvungu, kanye nezivunguvungu, zinomthelela omkhulu olwandle. Iziphepho zasezindaweni ezishisayo, isibonelo, zingabangela ukwanda okukhulu kwamagagasi olwandle futhi zilimaze imvelo yasogwini kanye nezakhiwo ezenziwe ngabantu. Lawa magagasi aphezulu angabangela ukuguguleka kolwandle, umonakalo ezitsheni zamakhorali, kanye nokulahlekelwa yindawo yokuhlala yezinhlobo ezahlukene zasolwandle.
Isibonelo esiyinhloko salesi simo yiSiphepho uKatrina, esahlasela i-United States ngo-2005. Lesi siphepho sabangela umonakalo omkhulu ezindaweni zemvelo zasolwandle, okuhlanganisa nokufa kwezinhlanzi eziningi nezinye izilwane zasolwandle. Izilwandle ezizolile zingaguquka zibe izindawo eziyinselele neziyingozi ngesikhathi nangemva kwesiphepho esikhulu.
2. Umoya Nolwandle
Umoya udlala indima ebalulekile ekushintsheni kolwandle. Ukuhamba komoya phezu kolwandle kudala amagagasi nemisinga. Amandla omoya kanye nesiqondiso kungathonya ukusatshalaliswa kokushisa olwandle, okuthonya isimo sezulu sesifunda nesomhlaba wonke. Isibonelo, imimoya yokuhweba ePacific Ocean idlala indima ebalulekile ezimweni ze- El Niño neLa Niña.
I-El Niño yisimo lapho amanzi ase-mpumalanga yePacific eba shushu kakhulu kunokujwayelekile, okubangelwa ubuthakathaka bemimoya yokuhweba. Lokhu kungabangela ukuphazamiseka okukhulu kumaphethini esimo sezulu somhlaba wonke, okuhlanganisa isomiso kwezinye izifunda kanye nezikhukhula kwezinye. Ngokuphambene nalokho, i-La Niña yisimo lapho amanzi ase-mpumalanga yePacific eba pholile kunokujwayelekile, okuvame ukumelana nemiphumela ye-El Niño.
3. Izinga Lokushisa Nolwandle
Izinga lokushisa lamanzi olwandle liyisici esibalulekile esithonywa yisimo sezulu nesimo sezulu. Izinga lokushisa lolwandle lingathonya ukusabalala nokuziphatha kwezinto eziningi zasolwandle. Isibonelo, ezinye izinhlobo zezinhlanzi nezinhlobo ze-plankton zizwela kakhulu ezinguqukweni zokushisa kwamanzi , futhi ngisho nezinguquko ezincane zingaziphoqa ukuba zithuthele ezindaweni ezintsha, ziphazamise imvelo yendawo.
Ngaphezu kwalokho, amazinga okushisa aphezulu olwandle angenza inkinga yokumhlophe kwamakhorali ibe nkulu kakhulu. Lokhu kwenzeka lapho amazinga okushisa aphezulu emanzini ebangela ukuthi ulwelwe oluhlala ngaphakathi kwezicubu zamakhorali lufe noma lunyamalale, okuphuca amakhorali umthombo wawo wokudla futhi kube mhlophe. Lezi zenzakalo zokumhlophe kwamakhorali ziye zabonwa emashumini eminyaka amuva nje, ikakhulukazi ngenxa yokufudumala komhlaba.
4. Ukusebenzisana Kwesimo Sezulu Somhlaba Wonke
Ukusebenzisana phakathi kolwandle nesimo sezulu akugcini nje ngokuba sendawo kodwa futhi kunemiphumela yomhlaba wonke. Izinhlelo zolwandle nomoya zixhumene kakhulu emjikelezweni wamanzi kanye nokujikeleza kwe-thermohaline. Ulwandle lusebenza njengendawo yokugcina ukushisa kanye ne-carbon dioxide emhlabeni wonke, ethonya izinga lokushisa kanye nokwakheka komkhathi.
Uhlelo lwamanzi olwandle olwaziwa ngokuthi “ibhande lokuhambisa i-thermohaline” luyisibonelo esisodwa salokhu kusebenzisana komhlaba wonke. Leli bhande lokuhambisa lithutha amanzi afudumele esuka ezindaweni ezishisayo aye ezindaweni ezishisayo, kanye namanzi abandayo avela ezindaweni ezishisayo aye ezindaweni ezishisayo. Izinguquko ezibalulekile kulolu hlelo zingaba nomthelela omkhulu esimweni sezulu somhlaba wonke. Isibonelo, uma ukufudumala komhlaba kubangela ukuthi iziqongo zeqhwa eGreenland nase-Antarctica zincibilike, amanzi ahlanzekile azongena olwandle futhi aphazamise ukujikeleza kwe-thermohaline, okungenzeka kubangele ushintsho olukhulu lwesimo sezulu.
5. Imithelela Yezomnotho Nezenhlalo
Umthelela wesimo sezulu olwandle nawo unemiphumela ebalulekile kwezomnotho nakwezenhlalo. Imiphakathi eminingi emhlabeni wonke ithembele olwandle ukuze iziphilise, kungaba ngokudoba, ezokuvakasha, noma ezokuthutha olwandle. Izinhlekelele zesimo sezulu ezimbi kakhulu zingalimaza umnotho wendawo ngokubhubhisa imikhumbi, imishini yokudoba, kanye nezinye ingqalasizinda.
Ngaphezu kwalokho, ukuguquka kwesimo sezulu okuthinta ulwandle nakho kungathinta ukuvikeleka kokudla emhlabeni jikelele. Ukushintsha kwezindlela zokufuduka kwezinhlanzi kanye nokuncipha kwenani lezinhlobo ezithile kunganciphisa ukubanjwa kwezinhlanzi, okuwumthombo oyinhloko wamaprotheni ezigidigidi zabantu emhlabeni jikelele. Amazwe asathuthuka, ikakhulukazi, asengozini enkulu yalezi zinguquko ngoba awanazo izinsiza zokuzivumelanisa ngokushesha.
6. Imizamo Yokunciphisa Nokuzivumelanisa Nezimo
Ukuze kuxazululwe imiphumela yesimo sezulu olwandle, kokubili ukunciphisa kanye nokuzivumelanisa nezimo kubalulekile. Ukunciphisa lokhu kugxila kakhulu emizamweni yokunciphisa ukukhishwa kwamagesi okushisa ukushisa ukuze kuncishiswe ukufudumala komhlaba, kuyilapho ukuzivumelanisa nezimo kuhilela ukuzivumelanisa nezinguquko ezingenakugwenywa.
Isibonelo esisodwa somzamo wokunciphisa imvelo ukuthuthukiswa kwamandla avuselelekayo ukuze kuncishiswe ukuthembela emafutheni asetshenziswa ezintweni ezisetshenziswayo. Izinyathelo zokuzivumelanisa nezimo zingafaka phakathi ukwakha ingqalasizinda engamelani neziphepho, ukuthuthukisa ukuphathwa kogu, kanye nokubuyisela amatshe asolwandle kanye nezinye izindawo zokuhlala ezibalulekile.
7. Ucwaningo Nemfundo
Ucwaningo oluqhubekayo kanye nemfundo yomphakathi kubalulekile ekuqondeni nasekubhekaneni nemiphumela yesimo sezulu olwandle. Izikhungo eziningi zocwaningo kanye namanyuvesi emhlabeni wonke enza izifundo ezijulile mayelana nokusebenzisana okuyinkimbinkimbi phakathi kolwandle nesimo sezulu. Ubuchwepheshe besimanje, okuhlanganisa ukuzwa kude kanye namamodeli ekhompyutha ayinkimbinkimbi, kusiza ososayensi ukubikezela ngokunembile izinguquko kanye nemiphumela yazo.
Imfundo yomphakathi nayo idlala indima ebalulekile. Umphakathi onolwazi oluhle cishe uzosekela izinqubomgomo zemvelo eziqhubekayo futhi ulungele izinhlekelele zemvelo.
Isiphetho
Ubudlelwano phakathi kwesimo sezulu nolwandle buyinkimbinkimbi futhi buxhumene. Ukuqonda kangcono lokhu kusebenzisana kubalulekile esimweni sokushintsha kwesimo sezulu kanye nokuhwebelana komhlaba wonke. Kusukela ethonyeni lomoya kanye nokushisa kuya emiphumeleni yezomnotho neyezenhlalo, lezi zici zibonisa indima ebalulekile yolwandle ohlelweni lwesimo sezulu lomhlaba wonke. Imizamo yokunciphisa kanye nokuzivumelanisa nezimo, kanye nocwaningo oluqhubekayo kanye nemfundo, kubalulekile ekugcineni ibhalansi yezindawo zemvelo zasolwandle kanye nenhlalakahle yabantu.
