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| DOI | 10.1029/2023WR034528 |
| Isotope Hydrograph Separation Reveals Rainfall on the Glaciers Will Enhance Ice Meltwater Discharge to the Himalayan Rivers | |
| 发表日期 | 2024 |
| ISSN | 0043-1397 |
| EISSN | 1944-7973 |
| 起始页码 | 60 |
| 结束页码 | 6 |
| 卷号 | 60期号:6 |
| 英文摘要 | The Indian Summer Monsoon (ISM) and meltwater from the Himalayan are the two most important sources of water in the Indian subcontinent. However, the impact of ISM on Himalayan glaciers and subsequent stream hydrology remains largely unknown. To provide new insight into the impact of rainfall on glacial hydrology, here we present hydro-meteorological and time-series observations of meltwater stable water isotope compositions from the snout of the Chorabari glacier in the Upper Ganga Basin, Central Himalayas across the ablation season corresponding to 2019. We observe that rainfall events (>2 mm d(-1)) on the glacier enhance discharge driven by ice meltwater in River Mandakini. Energy balance calculations reveal that one of the drivers behind enhanced ice meltwater contribution could be rain-induced melting of the glacier where rainfall on the ice surface melts the glacier producing up to 13% of the total discharge at the glacier snout. Further, rainfall on glacier surface have other control on glacial processes-for example, snow metamorphism, ice flow dynamics such as short-term acceleration in ice speed flow, and reorganization of the englacial and subglacial drainage network-that are poorly studied and needs further investigation. We conclude rainfall events on the glacier have a complex control on mountain hydrology. This study, therefore, provides an interpretative framework that calls for additional assessments of the direct and indirect impact of rainfall in glacial hydrology. |
| 英文关键词 | Indian summer monsoon; glacier meltwater; isotope mixing model; hydrograph separation; Himalayan glacier |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
| WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
| WOS记录号 | WOS:001236452000001 |
| 来源期刊 | WATER RESOURCES RESEARCH
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/299814 |
| 作者单位 | Indian Institute of Technology System (IIT System); Indian Institute of Technology (IIT) - Kanpur; Indian Institute of Science (IISC) - Bangalore; Chinese Academy of Sciences; Indian Institute of Technology System (IIT System); Indian Institute of Technology (IIT) - Bhubaneswar |
| 推荐引用方式 GB/T 7714 | . Isotope Hydrograph Separation Reveals Rainfall on the Glaciers Will Enhance Ice Meltwater Discharge to the Himalayan Rivers[J],2024,60(6). |
| APA | (2024).Isotope Hydrograph Separation Reveals Rainfall on the Glaciers Will Enhance Ice Meltwater Discharge to the Himalayan Rivers.WATER RESOURCES RESEARCH,60(6). |
| MLA | "Isotope Hydrograph Separation Reveals Rainfall on the Glaciers Will Enhance Ice Meltwater Discharge to the Himalayan Rivers".WATER RESOURCES RESEARCH 60.6(2024). |
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