Using tritium and 222Rn to estimate groundwater discharge and thawing permafrost contributing to surface water in permafrost regions on Qinghai-Tibet Plateau
| Autor: | Peng Yi, John J. Gibson, Shen Sichen, Chengwei Wan, Zhongbo Yu, Kaifang Ji, Kai Li |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Hydrology
Health Toxicology and Mutagenesis Public Health Environmental and Occupational Health 010403 inorganic & nuclear chemistry Permafrost 01 natural sciences Pollution 0104 chemical sciences Analytical Chemistry Nuclear Energy and Engineering Streamflow Environmental science Radiology Nuclear Medicine and imaging Groundwater discharge Meltwater Surface runoff Subsurface flow Surface water Spectroscopy Groundwater |
| Zdroj: | Journal of Radioanalytical and Nuclear Chemistry. 322:561-578 |
| ISSN: | 1588-2780 0236-5731 |
| DOI: | 10.1007/s10967-019-06720-5 |
| Popis: | On the Qinghai-Tibet Plateau, permafrost degradation and associated release of permafrost meltwater has undoubtedly modified the annual and seasonal streamflow patterns and influenced groundwater conditions. However, it is still unclear how extensively permafrost degradation has influenced surface and subsurface water systems due to very sparse observations. Isotope mass models combining tritium and 222Rn measurements are developed here to quantify the contributions of groundwater discharge and thawing permafrost to rivers and lakes in the Source Area of the Yellow River. Results demonstrate the spatial variability of permafrost thaw impacts and confirm significant influence on surface and subsurface runoff processes including effects on water yield capacity and water drainage connectivity. While results to date are conclusive, further work to refine the method and extend observations is warranted. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
| Nepřihlášeným uživatelům se plný text nezobrazuje | K zobrazení výsledku je třeba se přihlásit. |