Dutsen kankara - menene wannan? Kamar yadda icebergs aka kafa

Dutsen kankara - wata babbar kankara massif, slipping daga ɓangaren duniya, ko da wani tsibirin a cikin teku, ruwa ko kwakwalwan kwamfuta daga Coast. Yana fassara da kalmar a matsayin "kankara dutse". Su zama shi ne na farko authentically bayyana M. Lomonosov. Saboda gaskiya cewa yawa na kankara ne game da 10% na kasa da yawa na ruwa, da girma daga cikin dutsen kankara (90%) ta'allaka kasa da ruwa surface.

Ina icebergs aka kafa

A arewacin yammancin duniya na haifuwa daga Greenland ne kullum tara kankara Layer kuma, daga lokaci zuwa lokaci aika ba dole ba a cikin tekun Atlantic. Ƙarƙashin rinjayar igiyoyin da iskõki kankara tubalan aka aika zuwa gefen kudu, tsallaka teku hanyoyi cewa connect Arewa da Kudancin nahiyar Amirka zuwa Turai. A tsawon tafiya ne daban-daban a cikin daban-daban yanayi. A cikin bazara, ba su isa zuwa 50º tare. m., da kuma a cikin fall kuma zai iya kai 40º tare. w. A wannan latitud ne transoceanic Maritime hanyoyi.

Dutsen kankara - wani gungu na kankara da cewa zai iya samar da kashe bakin tekun na Antarctica. Daga wannan lokaci ya fara ta hanyar zuwa forties na Pacific, Atlantic da kuma Indian tekuna. Waɗannan abubuwan sune, ba a bukatar tsakanin shippers saboda su babban hanyar da za ta hanyar da Panama da kuma Suez Canals. Duk da haka, da girman icebergs da kuma lambar shi ne mafi m zuwa arewacin yammancin duniya Manuniya.

shãmaki Berg

Sanin abin da wani dutsen kankara, za mu iya la'akari da iri. Tabular kankara floes - sakamakon aiwatar da watse kashe manyan yankunan da kankara shelves. Kila iya zama sosai daban-daban daga firn zuwa gleiser kankara. A launi halaye na dutsen kankara fickle. Freshly cleaved yana da wani farin Matte gama saboda babban rabo daga cikin iska a cikin matsanancin Layer na compacted snow. A tsawon lokaci, da gas da aka rasa muhallinsu da ruwa saukad, saboda abin da dutsen kankara da aka fentin a cikin haske blue color.

Tabular dutsen kankara - wannan shi ne wani sosai m block na kankara. Daya daga cikin manyan wakilan irin wannan yana da girma na 385 × 111 km. Wani yana mai rikodin yanki na game 7 dubu. ^Km2. Ainihin adadin tabular icebergs ne umarni na girma kasa da waɗanda nuna. Su tsawon ne game da 580 m, da tsawo na ruwa surface -. 28 m a kan surface za a iya kafa wasu koguna da tabkuna da narke ruwa.

pyramidal dutsen kankara

Pyramidal dutsen kankara - wannan shi ne sakamakon kankara landslides. Suna bambanta da tip tare da kaifi karshen da kuma babba tsawo sama da ruwa surface. A tsawon na kankara tubalan irin wannan ne game da 130 m da tsawo na mai surface part -. 54 m Su launi bambanta daga tabular taushi greenish-bluish tinge, amma gyarawa da kuma duhu icebergs. A cikin kankara ne muhimmi hada da kankara, yashi, ko silt, wanda aka saka a cikin shi a lokacin da motsi na tsibirin ko da babban yankin.

A barazana ga jiragen ruwa

A mafi hatsari ne icebergs da suke a Arewa Atlantic. A kowace shekara a cikin teku, da ake gyarawa zuwa 18 dubu. New kankara swingers. Lura da su ne kawai daga nesa na ba fiye da rabin kilomita. Yana da bai isa ba to da lokaci zuwa juya baya ko dakatar da jirgin ruwa don kauce wa wani karo. A peculiarity na wadannan ruwayen ne cewa akwai sau da yawa wani lokacin farin ciki hazo, wanda na dogon lokaci ba dissipate.

Matuƙan saba da m ma'anar kalmar "dutsen kankara". A mafi hatsari ne tsohon kankara floes, wanda ake gaske narke, kuma kusan ba protrude sama da teku surface. "The International Ice yan sintiri" da aka shirya a 1913. Sandarsa ne a sadarwar da jiragen ruwa da kuma jirgin sama, tara bayanai game da icebergs kuma ka yi gargaɗi da hadari. Hango da motsi na kankara swinger kusan ba zai yiwu. Aiki a atomatik yanayin, to sanya su mafi bayyane icebergs alama da haske Paint ko Shiriya.