INyanga ibhekane nokuphephuka kwengubo yomhlaba wonke futhi namuhla isibheke phansi

inyanga egcwele

Isathelayithi yemvelo Yomhlaba, evame ukubizwa ngokuthi iNyanga, ilandela indlela eyi-elliptical ezungeze iplanethi yethu ngesivinini esingamakhilomitha angu-3.680 ngehora, ngokusho kwe-National Aeronautics and Space Administration, noma i-NASA. Njengoba ingenawo umkhathi, iNyanga ibhekana nokuguquguquka okukhulu kwezinga lokushisa, kusukela ku--184 degrees Celsius phakathi nesigaba sayo sasebusuku ukuya ekushiseni okungu-214 degrees Celsius lapho ikhanyiswa ilanga. Kukhona ucwaningo oluphakamisa ukuthi inyanga ihlukumezeke emhlabeni wonke futhi namuhla isibheke phansi.

Kulesi sihloko sizokutshela ukuthi yiziphi izifundo eziphakamisa lokho INyanga ihlaselwe yi-global mantle flip futhi namuhla isibheke phansi kanye nemithelela yayo esikhathini esizayo.

Ulwazi ngenyanga

ukuphenduka kwenyanga

Kuzo zonke izinto zasezulwini ezisemkhathini, ulwazi lwethu ngeNyanga ludlula lolo lwanoma yiziphi ezinye. Phakathi kophenyo oluningi olwenziwe kuze kube manje, okunye okutholakele kubaluleke kakhulu kunezinye, okuhlanganisa ukutholakala kwe-crater egcwele iqhwa ohlangothini olumnyama lweNyanga.

Encwadini esanda kushicilelwa kumagazini wesayensi i-Nature, isambulo esimangalisayo sivele sokuthi iNyanga yenze izinguquko ezinkulu, iphenduke "ibheke phansi."

Ochwepheshe abadumile babone uguquko olubonakala lujwayelekile, okuthi lapho luhlolisisa, lwembule ukuntengantenga kwawo kwamandla adonsela phansi, okudale ukuxokozela okukhulu kwengubo nokunqwabelana kwe-ilmenite ecwila ngaphakathi.

Nakuba kukhona isiqiniseko mayelana nalolu lwazi, ubufakazi buhlala kuphela be-geochemical, ngakho-ke ubufakazi obubonakalayo buyadingeka ukuze kuqinisekiswe i-hypothesis evele ibonakala iyiqiniso eliphelele, kucatshangelwa ukuyaluza kwengubo.

Ngokusho kososayensi, incazelo eshiwo ngenhla yokugumbuqelwa kweNyanga isekelwa ukufana phakathi kwephethini ephawuliwe, ubukhulu nobukhulu be-anomalies yamandla adonsela phansi, kanye nokuba khona kwe-ilmenite eqoqiwe.

Ngokusho kwe-National Geographic, ochwepheshe u-Weigang Liang no-Adrien Broquet baye baqinisekisa okutholwe ngaphambilini okushicilelwe umagazini i-Nature, banikeza ubufakazi obuphathekayo ngokuhlanganisa ukuguquguquka kwamandla adonsela phansi kanye namamodeli e-geodynamic. Nokho, Ingxabano yakhe ithi ngaphambi kokuba khona kwezilwandle zenyanga njenge-Serenitatis ne-Humorum, iNyanga yabhekana nesenzakalo esingavamile lapho kubonakala sengathi "ibheke phansi."

Inyanga yaphephuka namuhla isibheke phansi

Inyanga egcwele

Kunemibono eminingi mayelana nemvelaphi yeNyanga, kodwa inkolelo-mbono evelele iphakamisa ukuthi isathelayithi yethu yemvelo yakhiwa emzimbeni wasezulwini olingana ne-Mars eminyakeni eyizigidi edlule.

Ngemva kokushayisana neplanethi yethu, into engavamile yaxosha ingxenye ebalulekile yokwakheka kwayo, ishiya izinto ezixoshiwe zimisiwe emkhathini, ezizungeze uMhlaba. Ngokuhamba kwesikhathi, Lawa matshe ahlakazekile ahlangana kancane kancane futhi ekugcineni akhe lokho esikwazi manje njengeNyanga.

Ngokwe-UNAM Gazette, idwala elivela eMhlabeni laphonswa emkhathini ngemva kokushayisana ne-meteorite enkulu, okuveza ukuba khona kwengosi phakathi kokwakheka kwamatshe eNyanga.

Zonke izihloko okuxoxwe ngazo namuhla zibaluleke kakhulu emlandweni wenyanga, ngalokho zandisa ukuqonda kwethu ngomakhelwane wethu wasezulwini, iNyanga. Isihloko esithakazelisa ngokukhethekile ukuba khona kwediphozi enkulu yetshe elincibilikisiwe.

Ijika lavela kanjani

Inyanga yaphephuka namuhla isibheke phansi

INyanga, into yasezulwini leyoyavela cishe eminyakeni eyizigidi eziyizinkulungwane ezingu-4.500 edlule, ingenxa yesehlakalo esiyinhlekelele endaweni yonke. Lo mcimbi wawuhilela ukungqubuzana okukhulu phakathi koMhlaba kanye ne-protoplanet ngobukhulu obufana ne-Mars, okwaholela ekukhishweni kwemfucumfucu egcine ihlangene yakha iNyanga. Kodwa-ke, lesi senzakalo sokuqala sasimane nje siyisiqalo sokulandelana kwezinguquko ezimangalisayo zokwakheka komhlaba. Ngokuhamba kwesikhathi, iNyanga encane yagubuzelwa ulwandle olukhulu lwamatshe ancibilikisiwe, olwaqina kancane kancane lwaba yingubo yenyanga kanye noqweqwe.

Kodwa indaba ayizange iphele ngokupholiswa kwe-magma. Izendlalelo eziminyene ze-ilmenite, imineral ecebile nge-titanium, yakheka phezu kwezingqimba ezincane eziminyene ekujuleni kweNyanga. Leli lungiselelo laliyingozi ngokunamandla adonsela phansi futhi ekugcineni laphumela entweni eyaziwa ngokuthi "i-global mantle overturn", okubangele ukuwa kokuqoqwa kwe-ilmenite phakathi nendawo yenyanga.

Ochwepheshe abafana no-Weigang Liang no-Adrien Broquet baba negalelo ocwaningweni oluveza ubufakazi obuqand' ikhanda balesi simo. Ngokuhlanganisa ukuguqulwa kwamandla adonsela phansi kanye namamodeli e-geodynamic, ososayensi baxhumanise ngempumelelo okudidayo kwamandla adonsela phansi okuqondile endaweni ye-lunar maria nezinsalela zokunqwabelana kwe-ilmenite okwenzeka ngemva kwesigameko sokuhlehla.

Okukhethekile okuphawuliwe akuzona izinto ezingavamile, kodwa kunalokho, zakha uhlelo olunembile lwejometri oluqondana kahle namaphethini aklanyelwe izinsalela ze-ilmenite. Ithola lokhu kuchezuka okucashile emkhakheni wamandla adonsela phansi eNyangeni kungenzeka ngenxa ye-NASA's GRAIL mission, ezungeza umakhelwane wethu wasezulwini ngokungakhathali kusukela ngo-2011 kuya ku-2012.

Ngokuhlaziya idatha, abacwaningi abatholanga nje ukuqonda okunembe kakhudlwana kokuthi izingxenye zangaphakathi zeNyanga zisakazwa kanjani, kodwa baphinde banquma ukulandelana kwezikhathi kwalezi zenzakalo. Ungqimba lwe-ilmenite kucatshangwa ukuthi luzinzile ngaphambi kokwakhiwa kwezigodi ze-Serenitatis ne-Humorum, okubonisa ukuthi lesi sigameko cishe sandulela futhi singasiza umsebenzi wentaba-mlilo obonakala njengamanje endaweni yenyanga.

Imithelela engaba khona kanye nezindawo zokuhlola esikhathini esizayo

Ukutholwa kokugingqika kwengubo yenyanga kunemithelela ebalulekile yokuqonda ukuthuthuka kokwakheka kweNyanga. Ukwengeza, lesi simo sinamandla okunikeza imininingwane emisha kwezinye izinto zasezulwini ezabelana ngezibaluli ezifanayo.

Lolu cwaningo oluthile lugqamisa ukubaluleka kohambo lwasemkhathini kanye nokubambisana komhlaba wonke ekuhloleni indawo njengoba luhlinzeka ngolwazi olubalulekile lokho akugcini nje ngokuthuthukisa ukuqonda kwethu i-cosmos kodwa futhi kujulisa iqhinga lethu lesikhathi eside ngesathelayithi yethu.

Ucwaningo oluqhubekayo lweNyanga luhlala luphonsela inselelo imibono yethu futhi luthuthukisa ukuqonda kwethu ngendawo yonke. Ngokutholwa ngakunye okusha, sisondela ekwambuleni izingqinamba zomkhathi ongaphandle, okukhombisa ukuthi ngisho nendikimba yethu yasezulwini engumakhelwane, iNyanga, iqukethe inqwaba yezindaba ezixoxwayo.

Ngithemba ukuthi ngalolu lwazi ungafunda kabanzi mayelana nokuphenduka kwenyanga nezici zayo.


Shiya umbono wakho

Ikheli lakho le ngeke ishicilelwe. Ezidingekayo ibhalwe nge *

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  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.