Bering mashigar corridor zuwa New World

Bering mashigar ta haɗu da Arctic Ocean zuwa Bering Sea, da kuma raba nahiyoyin biyu: Asia da kuma Arewacin Amirka. Yana wuce ta wurin shi Rasha-Amurka iyaka. An mai suna ga Vitus Bering, a Danish kyaftin wanda ya shiga jirgin ruwa a kan shi a 1728. Duk da haka, har yanzu akwai muhawara game wanda ya buɗe wa Bering mashigar. Delta Anadyr River, inda shi yiwuwa a shigar kawai ta mashigar, aka bincika Cossack Semenom Dezhnevym baya a 1649. Amma daga baya ya samu ya kada a gane shi.

Matsatsiyar talakawan zurfin 30-50 m, da kuma fadin a narrowest batu ne 85 kilomita. A mashigar, akwai da yawa tsibiran, ciki har da tsibirin Diomede da kuma tsibirin St. Lawrence. Wasu daga cikin Bering Sea ruwa gudana ne ta mashigar cikin Arctic Ocean, kuma amma mafi yawan shi gudana a cikin tekun Pacific. A cikin hunturu, da Bering mashigar fallasa m hadari teku da aka rufe da kankara zuwa mita 1.5 m. Gantali kankara ya zauna a nan har ma a tsakiyar lokacin rani.

Game 20-25 shekara dubu da suka wuce, a lokacin da Ice Age, monumental nahiyar glaciers kafa a arewacin yammancin duniya na Duniya, ya ƙunshi sosai ruwa da teku matakin ya fiye 90 mita ƙananan fiye da shi ne a yanzu. A cikin yankin na Bering mashigar fadowa teku matakan da fallasa da m, danda gleiser hanya, da aka sani da Bering ƙasar gada ko Beringia. ya shiga zamani Alaska a arewa-maso-gabashin Asia. Masana kimiyya da dama bayar da shawarar cewa Beringia ya tundra ciyayi, da kuma a kan shi da aka za'ayi ko da reindeer. Isthmus wahayi zuwa mutane ƙofar Arewacin Nahiyar Amirka. 10-11 shekara dubu da suka wuce, saboda narkewa daga glaciers Sea matakin ya tashi, da kuma gada fadin Bering mashigar aka gaba daya flooded.

A ra'ayin shi ne cewa a cikin wadannan kwanaki, don samun fita daga Rasha ta Chukotka da American Alaska, isa ga iyo sa'o'i biyu da jirgin fito. Duk da haka, duka biyu da Amurka da kuma Rasha ta iyakance damar zuwa kandami. Babu ga Amurka, kuma bã Rasha mazauni ne kusan ba zai yiwu a samu izinin iyo cikin Bering mashigar. Wani lokaci adventurers ba bisa ƙa'ida ba ƙoƙarin haye shi da kwami, iyo ko kankara.

Akwai kuskure ne cewa ta matsatsiyar a cikin hunturu gaba daya freezes, kuma yana da sauki tafi a kan kankara. Duk da haka, akwai wani karfi dake arewacin halin yanzu, wanda yawanci results a cikin samuwar manyan bude tashoshin ruwa. Wani lokaci wadannan tashoshi zama gidan ya toshe da motsi chunks na kankara, don haka da cewa shi ne rubuce yiwu, za daga yanki zuwa yanki, da kuma a wasu yankunan motsi da iyo, ƙetare matsatsiyar.

A halin yanzu akwai biyu lokuta da ta yi nasara mararraba na Bering mashigar. A farko da aka rubuta a shekarar 1998, a lokacin da wannan mahaifi da dansa daga Rasha kokarin tafiya zuwa Alaska. Mutane da yawa kwanaki da suka kashe a teku a rugujewa tubalan na kankara, har a karshe, sun kasance bã su kawo wa gaba na Alaska. Kuma ba haka ba da dadewa, a 2006, English Explorer Karl Bushby da American aboki Dimitri Kiefer sanya wani koma tafiya. A Chukotka, suka tsare da FSB na Rasha da kuma tura koma Amurka. Yana ya kuma har yanzu 'yan wannan yunkurin, amma duk ya ƙare tare da ma'aikatan ceto da su tare da taimakon jiragen sama don ya dauke mutane tare da kankara tubalan.