Cryopegs
WebCryopegs and layers with increased salinity were repeatedly observed beneath the tabular ice at Central 1111 Cryogeochemical model of tabular ground ice and cryopegs, Yamal Peninsula, Russia I.D. Streletskaya Moscow State University, Faculty of Geography, Moscow, Russia M.O. Leibman Earth Cryosphere Institute SB RAS WebCryopegs are lenses of perennially overcooled water brines or a layer of unfrozen ground that is permanently cryotic (forming part of the permafrost), but freezing is prevented by …
Cryopegs
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WebAug 12, 2008 · A comparative study of the structure of micromycete complexes has been performed. The samples of micromycetes were taken by boring from unique habitats: cryopegs (lenses of non-freezing hypersaline water in ancient permafrost horizons) and permafrost Arctic sediments of different age enclosing these cryopegs. WebJul 21, 2024 · Cryopegs were first discovered by geologists in Northern Alaska decades ago. This field site in Utqiaġvik, formerly known as Barrow, was excavated in the 1960s by the U.S. Army’s Cold Regions Research and Engineering Laboratory to explore large wedges of freshwater ice that occur in the permafrost there.
WebJul 22, 2024 · Microbes in “cryopegs” may help researchers understand life in environments like Mars or other planetary bodies farther from the sun. Cryopegs are trapped layers of … WebThe paper deals with the microbiological characterization of water-saturated horizons in permafrost soils (cryopegs) found on the Varandei Peninsula (Barents Sea coast), 4–20 m deep. The total quantity of bacteria in the water of cryopegs was 3.5 × 10 8 cells/ml.
WebOct 13, 2009 · Cryopegs are isolated lenses or pockets of highly saline, liquid water that is permanently subzero (Celsius) in temperature due to chilling by the surrounding permafrost. The search for unfrozen Martian niches has expanded with the discovery of seasonally recurring linear features on slopes which might or might not be associated with cryopegs. WebSep 17, 2024 · Gas-emission craters discovered in northern West Siberia may arise under a specific combination of shallow and deep-seated permafrost conditions. A formation model for such craters is suggested based on cryological and geological data from the Yamal Peninsula, where shallow permafrost encloses thick ground ice and lenses of intra- and …
WebCryopegs remain liquid at the in situ temperature of À9 to À11°C and make up the only habitat on the Earth that is characterized by permanently subzero temperatures, high salinity, and the absence of external influence during geological time. From these cryopegs, anaerobic and aerobic, spore-less and spore-forming, halotolerant and ...
WebJun 12, 2012 · Procedures are cited for computational evaluation of the freezing point, phase composition, density, pH, and thermophysical properties of saline soils and cryopegs; these methods are implemented using software and approximate formulas, which can be used to develop regulatory documents. Download to read the full article text lyn house indianapolislyn hudson cardiffWebIn the Arctic there are lenses of overcooled water brines (cryopegs) sandwiched within permafrost marine sediments 100–120 thousand years old. We have investigated the physiological properties of the pure cultures of anaerobic Clostridium sp. strain 14D1 and two strains of aerobic bacteria Psychrobacter sp. isolated from these cryopegs. kinsmen beach north bayWebAug 4, 2011 · Cryopegs are isolated lenses or pockets of highly saline, liquid water that is permanently subzero (Celsius) in temperature due to chilling by the surrounding permafrost. The search for unfrozen Martian niches has expanded with the discovery of seasonally recurring linear features on slopes which might or might not be associated with cryopegs. lyn howells facebookWebNov 1, 2024 · Cryogeochemical relationship of stratal ice, cryopegs and their host deposits of central Yamal I D Streletskaya M O Leibman Underground Waters of the Lithosphere Permafrost Zone N I Tolstikhin... lyn home lightingWebJan 24, 2024 · Cryopegs, lenses of hypersaline unfrozen soil or water within permafrost, are a model for astrobiology, since free water can only be present on cryogenic bodies and planets in the form of brine. In this paper the diversity of aerobic halophilic-psychrotrophic microorganisms from an Alaskan cryopeg (Barrow Cape) were studied and described for … kinsmart new carsWebJun 1, 2005 · Cryopegs remain liquid at the in situ temperature of -9 to -11 degrees C and make up the only habitat on the Earth that is characterized by permanently subzero … lyn hudson of orbis persians