Idolobha elikhulu eMelika lizohamba ngaphansi kwamanzi nezigidi zabakhileyo kulo!
Omunye wemadolobha amaningi kakhulu futhi aphakeme kakhulu e-United States njalo ubiza isihloko somkhandlu omkhulu kunazo zonke emhlabeni. Ngokwezibalo ezihlukahlukene, abantu abayizigidi ezingu-8.5 kuya ku-10,5 bahlala kuwo - futhi lokhu akubandakanyi abantu abayizigidi ezingu-1.5-2 ezifuduka ngokungemthetho. Kusukela kutholakala ukuzamazama komhlaba nezikhathi ezinamandla kuwo, izimo zezulu nezimo zezulu zihlale ziqapha ukubikezela kokushintsha kwesimo sezulu nokuhamba kwamacwecwe e-tectonic. Muva nje abameleli bamanyuvesi amathathu asemthethweni e-United States basesabekile: I-New York izoba ngaphansi kwamanzi futhi lokhu kuzokwenzeka eminyakeni engaba ngu-100!
Ukwaziswa kokuqala mayelana nokutholakala kwesayensi okwesabekayo kwavela ezweni eliyaziwa ngokwesayense le-Proceedings of the National Academy of Sciences. Lesi sihloko sichaze izifundo ezithakazelisayo kunazo zonke, lapho uhulumeni adonsela khona ochwepheshe abavela ezikhungo ezintathu zocwaningo lwesayensi ePrinceton, Ruttersky nase-Oceanographic Institute. Isizathu sekhomishana kwakuyiziphepho eSandy, eyaba inhlekelele yemvelo hhayi kuphela eNew York ngo-2012.
"I-Sandy" evela eJamaica yimbangela yokukhathazeka ngoBarack Obama, ikhuthaza abantu abahlala edolobheni ukuba bazibophe emakhaya abo futhi balungele ukubhekana nesiphepho esinamandla esishisayo. "Sandy" yaphoqelela i-Stock Exchange, indlunkulu ye-UN, ukuvala phansi nokukhansela zonke izindiza emazweni amathathu. Imigudu engu-7 yomshuwalense yayinamanzi, futhi iManhattan Island yaqedwa izinsuku ezintathu ngamanzi asuka ezweni. Izinga lamagagasi ayamgcoba afika kumamitha amane ukuphakama. Ukushona kwabantu abangu-73 nomonakalo wezigidi eziyizinkulungwane ezingu-65 - yilokho okwashiya "iSandy" ngemva kwakhe eNew York.
Ukutadisha kokugcina kwakuwukuthola ukuthi "iSandy" kwakuyi-wave yokuqala yesiphepho - i-harbinger yezinye iziphepho ezinamandla ezishisayo. Ososayensi baye baqinisekisa ukuthi imvamisa yalezi zinhlekelele zizokhula, zithole amandla aphelele ngo-2100-2170. Isizathu salokhu kuyoba ukufudumala kwembulunga yonke: ngenxa yalokho, izinga lokushisa eNew York lizophakama ngamazinga amabili ngesilinganiso saminyaka yonke, ngenxa yalokho okuzofakwa khona umuzi ngaphansi kwamagagasi. Ngeshwa, uMongameli wamanje uDonald Trump akakholelwa esikhathini esizayo esibi eNew York futhi ushiye zonke izivumelwano zemvelo zaseMelika ngamunye ...
Ikuphi ukufa okuhloselwe ukushabalalisa izakhamuzi zaseNew York? Kakade ngo-2050 imvamisa yeziphepho izoba kabili, futhi amagagasi phakathi kwawo ngamunye azofinyelela ku-2.7-3 wamamitha ukuphakama. Kweminye iminyaka engu-10, ingozi yeziphepho ezintsha izokwandisa izikhathi ezingu-17, okuzoholela ekufeni kwezinkulungwane zabantu. Ukusetshenziswa kwekhompiyutha kwasiza ukuthola ukuthi ngo-2055 nyangazonke eNew York kuzoba nezikhukhula ezingu-1-2 nge-wave height kuze kube ngamamitha ayi-4.
Ososayensi abanalo isibikezelo esihle, ngakho-ke umcabango wawuzoba yinto engacabangi ukuthi benza iphutha ekubaleni. "Umbuzo owodwa kuphela ukuthi izinto ezimbi zizobe zimbi kangakanani - isimo sengqondo esinjengokuthi asikho," usosayensi uBenjamin Horton ubhekisela emiphumeleni emangalisa yocwaningo. Kodwa ingabe izakhamuzi zaseNew York zizokholelwa ekukhanyeni kwesayensi futhi zizokwazi yini ukuphunyuka esakhiweni esibi?