IMars noMhlaba
Ngesonto iNASA likhiphe i-video emphakathini efingqa lo umlando wesimo sezulu seMars kufanele ukunikezela imigqa embalwa ekuguqukeni kweplanethi "elibomvu" elingumakhelwane. Siyazi ocwaningweni olwenziwe, izithombe ezithwetshuliwe kanye namasampuli athathwe yimikhankaso eyahlukene yesikhala ukuthi ukuguquguquka kwayo kwesimo sezulu bekufana kakhulu noMhlaba kulo lonke uhlelo lwelanga.
Kusuka kuzimpawu zeMartian ezibonakala eMhlabeni ngesibonakude singagqamisa umkhathi onamafu amhlophe yize kungenabanzi njengaseMhlabeni, izinguquko zonyaka zifana kakhulu nalezo ezisemhlabeni, izinsuku ezingamahora angama-24, ukukhiqizwa kweziphepho zesihlabathi kanye ukuba khona kwama-ice caps ezigxotsheni ezikhula ebusika. Kubukeka kujwayelekile, akunjalo?
Ngenxa yengcindezi ephansi kakhulu nezimo zayo zokushisa, ukuba khona kwamanzi oketshezi ebusweni bawo cishe bekungeke kwenzeke, okukhombisa iMars njengeplanethi eyihlane enomoya omncane we-CO2. Ngokuphambene nalokho, i-geology yaseMartian enenqwaba yemigodi, izintaba-mlilo kanye nemihosha phakathi kwezinye isibonise njengenye ephelele kakhulu ohlelweni lwelanga.
Ngokwakhiwa kwamatshe nokwakheka komhlaba okutholakele, ukwakhiwa kabusha kokuvela kwayo kungenziwa. Iziteshi ze-runoff ziye zabonwa kweminye imingcele, efana ncamashi naleyo ebonwe emhlabeni ngenxa yokuguguleka okwenziwa yimifula nemifudlana, okukhombisa ukusakazeka okuqhubekayo koketshezi ebusweni obukhiqiza lokhu kuguguleka, cishe impela amanzi. ketshezi.
Iningi lalezi ziteshi livela lihlobene nemingxuma yasendulo, okusenza sicabange ukuthi isimo sezulu esivumele ukuba khona kwamanzi oketshezi ebusweni sathuthuka ekuqaleni komlando weplanethi. Ukuchazwa okunengqondo kungaba ubukhona bomoya osindayo wasendulo kunalona okhona manje, onomphumela omkhulu wokushisa okungaqinisa izinga lokushisa.
UMartian Geomorphology
Lo mkhathi awunakwakhiwa i-CO2 kuphela ngoba izibalo zinquma ukuthi lapho inani laleli gesi elisemkhathini lidala ingcindezi engaphezu kwamabha ayi-2,5, liyajiya. Isimo salezi zici ngeke siphumelele ukuthi izinga lokushisa komhlaba lidlule u-220ºK, ngaphansi kuka-273ºC, izinga lokushisa kwamanzi. Futhi-ke kwakungekho manzi ketshezi.
Ezindaweni ezisencane sibona imigudu echichimayo, okuyizakhiwo ezinkulu amashumi amakhilomitha ububanzi namakhulu amakhilomitha ubude, aqala ezindaweni eziwohlokile zomhlaba. Kuhlobene nokugeleza kwamanzi okuyinhlekelele nokuvela khona manjalo okugcinwe enhlabathini engaphansi futhi okuza ngaphezulu. Iningi lalawa manzi angaphezulu komhlaba angadlulela emkhathini ngokuhwamuka, okwenyusa ingcindezi nokushisa ngenxa yomphumela wokushisa okushisa womphunga wamanzi, kuphinde kudedele amanzi afriziwe ne-CO2 akhona enhlabathini yeMartian.
Lokhu kuzosheshisa ukuguquguquka kwesimo sezulu komhlaba wonke okungaholela ekwakhiweni kolwandle ezindaweni eziphansi zaseNyakatho Nenkabazwe, kanye nezindawo ezinkulu zeqhwa elisendaweni emincane. Ulwandle luzolahleka ngokuhamba kwesikhathi mhlawumbe ngokungena emhlabathini ongaphansi, iplanethi ibuyele esimweni sezulu "esifana" nesamanje.
Lezi ziteshi ezichichimayo esikhulume ngazo zivela eziqeshini eziningana kuwo wonke umlando weplanethi, kepha konke kamuva kumakhrethi asendulo akhiqizwa kulokho okwaziwa ngokuthi Isimo sezulu esihle seBombardment. Ngakho-ke sithola ukuthi izigaba zesimo sezulu esibandayo nesogwadule njengalesi esikhona njengamanje, ezixutshwe neziqephu zesimo sezulu esishisayo kanye nokuba khona kwezindikimba ezinkulu zamanzi enyakatho Nenkabazwe kuye kwaphindaphindwa ngokujikeleza komlando weplanethi.
Imininingwane engaphezulu: I-Life on Mars, ubufakazi obengeziwe obukhombisa lokhu kungenzeka, IComet 'Siding Spring' ilibangise ngaseMars