Natural isotopic separation of uranium in the Guadiana basin

1987 ◽  
Vol 118 (4) ◽  
pp. 291-298 ◽  
Author(s):  
A. Martín Sánchez ◽  
F. Vera Tomé ◽  
J. Díaz Bejarano
Keyword(s):  
Guadiana Basin ◽  
Isotopic Separation

Modelling the impacts of climate and land use changes on water quality in the Guadiana basin and the adjacent coastal area

2021 ◽  
Vol 776 ◽  
pp. 146034
Author(s):  
Cira Buonocore ◽  
Juan Jesús Gomiz Pascual ◽  
María Luisa Pérez Cayeiro ◽  
Rafael Mañanes Salinas ◽  
Miguel Bruno Mejías
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Coastal Area ◽  
Land Use Changes ◽  
Guadiana Basin ◽  
Adjacent Coastal Area

scholarly journals The Components of the Glacial Runoff of the Tsambagarav Massif from Stable Water Isotope Data

Geosciences ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 297 ◽  
Author(s):  
Dmitry V. Bantcev ◽  
Dmitry A. Ganyushkin ◽  
Kirill V. Chistyakov ◽  
Ilya V. Volkov ◽  
Alexey A. Ekaykin ◽  
...  
Keyword(s):  
Global Climate ◽  
Isotopic Analysis ◽  
Ice Formation ◽  
Northwestern Part ◽  
Glacial Ice ◽  
Main Method ◽  
Total Runoff ◽  
Glacial Runoff ◽  
Isotopic Separation ◽  
Main Components

The aim of this study was to determine the contribution of snow and glacial ice to the river fluxes, and to identify the type of ice formation in the Tsambagarav massif (the northwestern part of Mongolia). The main method for this study was isotopic analysis of water samples. The isotopic separation showed that the shares of the main components in the total runoff differed for different rivers of the massif. Alongside with that, glacial meltwater prevailed in all the investigated fluxes. The share of snow and firn in the meltwater coming from the surface of the large valley glaciers in the middle of the ablation season in 2017 changed by only 10%—from 20% to 30%. Thus, further reduction of glaciation caused by global climate change could significantly affect the water balance of the study area. The isotopic composition of glacial ice proves that its alimentation primarily comes from precipitation during the transitional seasons. Superimposed ice is not the basis for nourishment of the glaciers of the Tsambagarav massif.

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