Wani katon rami da aka gano a Antarctica

Abubuwa suna faruwa a Antarctica cewa, dukda cewa sunadaina gaba daya, tunda canjin yanayi wani al'amari ne da mutane ke ƙara lalacewa saboda yadda suke kula da duniyar tamu, abubuwa ne da suka shafe mu.

Labarin sabo shine gano wani katon rami a gefen Tekun Weddell a Antarctica wanda ya ba masana kimiyya mamaki.

Yankunan buɗaɗɗun ruwa kamar wanda aka samo, wanda ke kewaye da ƙanƙara a teku, ya zama a yankunan bakin teku na Antarctica da Arctic. Polynyas da aka sani, na iya bayyana ta hanyoyi biyu: ta hanyar aikin thermodynamic, wanda ke faruwa lokacin da yanayin zafin ruwan bai taɓa kaiwa wurin daskarewa ba; ko dai ta hanyar iskar katabatic ko igiyoyin ruwa, wanda ke ɗaukar kankara daga tsayayyen kankara na dindindin kankara.

Wani abin mamaki game da polynya da aka gani a gabar tekun Antarctica shine yana da zurfi a cikin murfin polar. A cewar masana kimiyya, an kirkireshi ne ta hanyar tsari wanda har yanzu basu sami bayani ba. Shin canjin yanayi ne? Har yanzu lokaci bai yi da za a fada ba, amma daya daga cikin dalilan ana ganin shine narkewar kankalin teku sakamakon ruwan dumi na Tekun Antarctic.

Lokaci na ƙarshe da za a iya lura da wani abu makamancin haka a yankin Tekun Weddel ya kasance a cikin shekarun 1970, amma a lokacin babu wadatattun kayan aikin da za su yi nazarinsa. Yanzu, godiya ga tauraron dan adam da mutummutumi da ke nitse cikin zurfin teku, masana na iya yin nazarin su. Don haka, sun sami damar gano hakan polynya ta yau tana da kimanin muraba'in kilomita 80.000, girman da ya fi girma girma fiye da yankin Panama.

Don ƙarin bayani, muna ba da shawarar ziyartar shafin Jami'ar Toronto, wanda masanin kimiyya Kent Moore yake, ɗaya daga cikin masu binciken lamarin, yin Latsa nan.