نتایج جستجو برای: periglacial system

تعداد نتایج: 2231487  

Journal: :Geological Society, London, Special Publications 2009

Journal: :Remote Sensing 2021

Nearly 25% of all lakes on earth are located at high latitudes. These formed by a combination thermokarst, glacial, and geological processes. Evidence suggests that the origin periglacial lake formation may be an important factor controlling likelihood to drain. However, geospatial data regarding spatial distribution these dominant Arctic subarctic limited or do not exist. Here, we use lake-spe...

Journal: :Quaternary Geochronology 2021

Two cores from a Weichselian periglacial alluvial fan were dated using 14C and OSL, to verify the reliability of both methods check upper dating limit method. Both yielded similar chronology for core Eerbeek-I, with infinite dates lower part where OSL indicated ages over 45 ka. Finite obtained throughout Eerbeek-II, despite stratigraphic evidence suggesting beyond limits. Apparently, additional...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم پایه 1391

a simple, rapid and low-cost scanner spectroscopy method for the glucose determination by utilizing glucose oxidase and cdte/tga quantum dots as chromoionophore has been described. the detection was based on the combination of the glucose enzymatic reaction and the quenching effect of h2o2 on the cdte quantum dots (qds) photoluminescence.in this study glucose was determined by utilizing glucose...

Journal: :Geomorphology 2021

Climate change is amplified in the Arctic, and establishing baseline data for its current character important. Here we present a map of geomorphology Femmilsjøen area, Spitsbergen, northern Svalbard. The regional physiography characterised by low-relief, high elevation mountain plateau, high-relief steep slopes, low-relief coastal lowlands. results indicate that glaciers were most likely warm-b...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1389

selective desulfurization of thiocarbonyls to carbonyls thioacetalization of aldehydes and ketones a useful reagent system for the dethioacetalization reactions

Journal: :Scottish geographical journal 2022

A systematic mapping approach characterizes Dartmoor periglacial landform signatures using the geomorphology of nine summit areas displaying well developed tor and blockfield landforms. This combines manual vectorisation with automatic classification surface boulder identification, spectral to reveal patterns distribution. Tors were classified a three-fold scheme: T0 - summits no tors; T1 caste...

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