Chodabwitsa ichi chadzaza ndi zosamvetseka
Pamene katswiri woona za malo wa ku Britain, Thomas Griffith Taylor, anayamba ulendo wake wolimbika wodutsa kum’mawa kwa Antarctica mu 1911, ulendo wake unakumana ndi zinthu zoopsa kwambiri: m’mphepete mwa madzi oundana omwe munali magazi otuluka mmenemo. Pambuyo pa zaka XNUMX zongoyerekeza, zomwe zimayambitsa kugwa kwa magazi zadziwika.
Asayansi aku US adagwiritsa ntchito maikulosikopu amphamvu opatsirana ma elekitironi kusanthula madzi a Blood Falls ndipo adapeza ma nanospheres ochuluka a iron omwe amasanduka ofiira akapangidwa ndi okosijeni.
"Nditangoyang'ana pazithunzi za microscope, ndinawona kuti panali ma nanospheres aang'ono awa, ndipo anali olemera mu chitsulo, ndipo pambali pa chitsulo, munali zinthu zambiri zosiyana - silicon, calcium, aluminium, sodium - ndipo zinali. zosiyana, "adatero m'mawu ake Ken Leavy, wasayansi wofufuza mu dipatimenti ya Materials Science ndi Engineering ku Whiting School ku yunivesite ya Johns Hopkins.
Wodziwika ndi mtundu wake wofiira kwambiri, iron oxide mpaka pano wakhala akukayikira kwambiri zachinsinsi cha Blood Falls. Komabe, njira yojambulira yapamwambayi yathandiza ofufuza kuti adziwe bwino chifukwa chake madzi otsetsereka amakhala ofiira owala kwambiri - komanso chifukwa chake maphunziro ena am'mbuyomu adalephera.
“Kuti akhale mchere, maatomu amayenera kusanjidwa mwapadera kwambiri, mwamakristalo. Ma nanospheres amenewa sakhala a crystalline, choncho njira zomwe kale zinkagwiritsidwa ntchito pophunzira zolimba sizimazizindikira,” akufotokoza motero Livy.
Wina angaganize kuti madzi ake ofiira ngati magazi ndi chinthu chachilendo kwambiri pa Mathithi a Magazi a ku Antarctica, koma malowa ali odzaza ndi zodabwitsa.
Asayansi atsimikiza kuti madzi ofiira omwe amachokera ku Blood Falls amachokera ku nyanja yamchere yomwe yakhala yotsekedwa mu ayezi kwa zaka 1.5 mpaka 4 miliyoni. M'malo mwake, nyanjayi ndi gawo limodzi chabe la malo okulirapo apansi panthaka amadzi am'madzi a hypersaline ndi akasupe.
Kuwunika kwamadzi kukuwonetsa kuti mabakiteriya osowa m'madzi amakhala m'malo osungiramo madzi a hypersaline - ngakhale kulibe mpweya. Izi zikutanthauza kuti mabakiteriyawo adakhalabe kwa zaka mamiliyoni ambiri popanda photosynthesis ndipo mwina adalimbikitsidwa ndi chitsulo choyendetsa njinga kuchokera ku brine.
Poganizira za zinthu zina zapadziko lapansi izi, asayansi amakhulupirira kuti Blood Falls akhoza kuphunziridwa kuti amvetse mozama mapulaneti ena a m'madera ena a mapulaneti.
Leavy anati: “Poyamba maulendo oyendetsa ndegewa, anthu anali ndi chidwi chofuna kupenda zinthu zolimba zotuluka m’madzi a Blood Falls monga ngati potera ku Martian.
"Kodi chingachitike ndi chiyani ngati rover itatera ku Antarctica? Kodi idzatha kudziwa chomwe chinachititsa kuti Blood Falls ikhale yofiira? Limeneli ndi funso lochititsa chidwi limene ofufuza angapo adzifunsapo.”
Chitsime: iflscience.com
