Ishidi elikhulu leqhwa lase-Antarctica, selizophuka

Isithombe - NASA

Ngendawo engaba amakhilomitha-skwele angama-5.000, ishalofu leqhwa elaziwa njengeLarsen C ice shelf selizophuka. Ukwephuka sekuvele kube cishe yi-110km ubude, i-100m ububanzi futhi cishe kube ngu-500m ukujula, futhi njengoba iThe Week likhombisa, kubonakala sengathi lihlanganiswe ngentambo yeqhwa.

Ososayensi balindele ukuthi ichithe ngokuphelele ezinyangeni ezizayo. Kodwa kungani?

Iqhwa lase-Antarctica linamathele eshalofini laleli zwekazi, hhayi emanzini njengase-Arctic. Ngokwalesi sizathu, lapho ulwandle lukhuphuka emhlabeni jikelele. ILarsen Ice Shelf, etholakala ngasogwini olusempumalanga ye-Antarctica, isebenza njengesitsha sezinguzunga zeqhwa. Ngeshwa, izingxenye zeLarsen A ne-B sezivele zinganakiwe, ngo-1995 nango-2002 ngokulandelana.

Ngokwezibalo zesayensi, uma onke amaqhwa ebenganqamuka olwandle angakhuphuka cishe ngamasentimitha ayi-10. Kungazwakala njengokuningi, kepha bonke labo abahlala ogwini bazoqala ukuba nezinkinga eziningi.

Njengoba izinga lokushisa eliphakathi komhlaba likhuphuka, iqhwa e-Antarctica liyancibilika, okwenza isimo sibe sibi kakhulu. Mayelana nalokhu, ngokusho kwe- Ucwaningo lwemagazini i-Nature, olwenziwe ngabaphenyi uRobert M. DeConto, ovela eMnyangweni Wezejiyosayensi eNyuvesi yaseMassachusetts (e-United States), noDavid Pollard wasePennsylvania State Institute (e-United States), ngonyaka wama-2100 izinga lamanzi lingakhuphuka ngaphezu kwemitha elilodwa.

Uma nje kuncishiswa ukukhishwa kwegesi ebamba ukushisa, i-thaw ingaba nomthelela omncane kakhulu ekukhuphukeni kolwandle, kusho uSolwazi DeConto.

ILarsen Ice Barrier, e-Antarctica.

Sizoqhubeka nokwazisa.


Okuqukethwe yi-athikili kunamathela ezimisweni zethu ze izimiso zokuhlelela. Ukubika iphutha chofoza lapha.

Yiba ngowokuqala ukuphawula

Shiya umbono wakho

Ikheli lakho le ngeke ishicilelwe. Ezidingekayo ibhalwe nge *

*

*

  1. Ubhekele imininingwane: Miguel Ángel Gatón
  2. Inhloso yedatha: Lawula Ugaxekile, ukuphathwa kwamazwana.
  3. Ukusemthethweni: Imvume yakho
  4. Ukuxhumana kwemininingwane: Imininingwane ngeke idluliselwe kubantu besithathu ngaphandle kwesibopho esisemthethweni.
  5. Isitoreji sedatha: Idatabase ebanjwe yi-Occentus Networks (EU)
  6. Amalungelo: Nganoma yisiphi isikhathi ungakhawulela, uthole futhi ususe imininingwane yakho.