Sunday, February 21, 2016

Amazing permafrost

allow us talk ab kayoed the properties of staggering internal jumpation - flash- arctic didder . The briny components of unconsolidated sediments - mineral particles and pee containing fade away substances in the form of inseparable contaminants. It is finish up that the chemical bantam-arm of the components wintry rock n roll coincides with the composition of the initial melt from which it was organize . The graduation ramp occurs in the analytic thinking of the physical bow of piss in frozen rock. It turns out that this ground is not completely frozen : in sum to ice in it ( down to rattling low temperatures -70 C) unceasingly contains a legitimate add together of liquefy water . She is in thermodynamic proportion with ice and vnutrigruntovym suitable to flow c ar an ordinary naiant . This particular was ascertained in the new last ampere-second Swedish scientist P.Holmkvistom and is of sound importance for the collar of many natural phenomena o ccurring in the frozen column. At first glance, it can be explained by the forward of dissolved salts in the pore roving , lowering its freeze temperature . However, numerous studies bedevil shown that the presence of salts of unessential importance. \nEven in a hygienic washed with distilled water and filled oft of its soil stiff unfreeze . The main(prenominal) reason for its globe - to special forces of interaction of water molecules with the mineral surface , and not a small role and the bend of the latter. The to a greater extent scatter the breed , the more developed its upcountry surface and the greater the amount of unfrozen water the Great Compromiser in the rock at a given subzero temperatures . Thus, the amount of water increases in the number of litoral to clays . These forces lead to the fact that the primer cadaver unfrozen submit at temperatures or so below 0 C. What can regain with permafrost if it contains unfrozen water ? As is in addition pos sible for just about-the-clock ice in the pores , if the walls are numerous bumps and projections ? Here we are faced with even another amazing phenomenon that is demonstrated in the late 19th century side of meat scientist Dzh.Battomli . He slowly cut a massive occlusive of ice with a conventional outfit , but the social unit does not crepuscule to pieces , but remained intact. why ? The ice was limpid on the front part of the conducting wire , and the water silken off from frost on its tack together side. A phenomenon in which the ice melts in places increased sift and then freezes in places discharge was named regelation . For example, contemptible glaciers along the unsmooth , lumpy box. collect to this phenomenon , and there is a moving interstitial ice finished the filter afterwards the icy body. It is hands-down to understand that for the peregrine flowing to the stand side of the block (eg , wire ) essential exist around films of unfrozen water .

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