| 来源类型 | Article |
| 规范类型 | 其他 |
| DOI | 10.3390/environments5050055 |
| Use of Water Balance and Tracer-Based Approaches to Monitor Groundwater Recharge in the Hyper-Arid Gobi Desert of Northwestern China. | |
| Akiyama T; Kubota J; Fujita K; Tsujimura M; Nakawo M; Avtar R | |
| 发表日期 | 2018 |
| 出处 | Environments 5 (5): p. 55 |
| 出版年 | 2018 |
| 语种 | 英语 |
| 摘要 | The groundwater recharge mechanism in the hyper-arid Gobi Desert of Northwestern China was analyzed using water balance and tracer-based approaches. Investigations of evaporation, soil water content, and their relationships with individual rainfall events were conducted from April to August of 2004. Water sampling of rainwater, groundwater, and surface water was also conducted. During this period, 10 precipitation events with a total amount of 41.5 mm, including a maximum of 28.9 mm, were observed. Evaporation during the period was estimated to be 33.1 mm. Only the soil water, which was derived from the heaviest precipitation, remained in the vadose zone. This is because a dry surface layer, which was formed several days after the heaviest precipitation event, prevented evaporation. Prior to that, the heaviest precipitation rapidly infiltrated without being affected by evaporation. This is corroborated by the isotopic evidence that both the heaviest precipitation and the groundwater retained no trace of significant kinetic evaporation. Estimated δ-values of the remaining soil water based on isotopic fractionation and its mass balance theories also demonstrated no trace of kinetic fractionation in the infiltration process. Moreover, stable isotopic compositions of the heaviest precipitation and the groundwater were very similar. Therefore, we concluded that the high-intensity precipitation, which rapidly infiltrated without any trace of evaporation, was the main source of the groundwater. |
| 主题 | Advanced Systems Analysis (ASA) |
| 关键词 | groundwater recharge evaporation water balance stable isotopes hyper-arid environment Gobi Desert Northwestern China |
| URL | http://pure.iiasa.ac.at/id/eprint/15595/ |
| 来源智库 | International Institute for Applied Systems Analysis (Austria) |
| 引用统计 | |
| 资源类型 | 智库出版物 |
| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/131258 |
| 推荐引用方式 GB/T 7714 | Akiyama T,Kubota J,Fujita K,et al. Use of Water Balance and Tracer-Based Approaches to Monitor Groundwater Recharge in the Hyper-Arid Gobi Desert of Northwestern China.. 2018. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 资源类型 | 版本类型 | 开放类型 | 使用许可 | ||
| environments-05-0005（2478KB） | 智库出版物 | 限制开放 | CC BY-NC-SA | 浏览 | ||
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