Heterogeneity in glacio-hydrological processes and estimation of different components in streamflow from central Himalayan glaciers
Study region: The study region includes two glaciers from Alaknanda and Bhagirathi river basins in Central Himalaya. Study focus: The study focuses on the analysis of high-resolution isotopic data sets of different components of the streamflow with ground-based meteorological observations from Autom...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-10-01
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| Series: | Journal of Hydrology: Regional Studies |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214581823001829 |
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| author | Akshaya Verma Amit Kumar Sameer K. Tiwari Rakesh Bhambri Kalachand Sain Santosh K. Rai Pawan Patidar |
| author_facet | Akshaya Verma Amit Kumar Sameer K. Tiwari Rakesh Bhambri Kalachand Sain Santosh K. Rai Pawan Patidar |
| author_sort | Akshaya Verma |
| collection | DOAJ |
| description | Study region: The study region includes two glaciers from Alaknanda and Bhagirathi river basins in Central Himalaya. Study focus: The study focuses on the analysis of high-resolution isotopic data sets of different components of the streamflow with ground-based meteorological observations from Automatic Weather Stations (AWSs) at two glaciers (∼4000 m asl). New hydrological insights for the region: The glaciers in the Himalaya are difficult to access due to their topography and climate and require complicated logistics to work in the region. Hence, the understanding of hydrological processes in this region is limited. The debris cover (sublimation of surface ice), orientation and microclimatic conditions (temperature, wind and rain) of the two glaciers control the isotope signatures of the glacier surface ice in the Himalayan region, indicating heterogeneity and complexity in the isotopic compositions. The studies estimating the contribution of different components to the streamflow downstream using generalized values of stable isotopes (glacier ice, snow) are complicated, as several glaciers contribute to the total runoff in large basins. The stable isotopes of streamflow indicate the contribution of snow and ice melt during early ablation (May-Jun.); rainfall and ice melt during the ISM (Jul.-Aug.) and ice melt during late ablation (Sep.-Oct.). The contribution of snow-glacier melt and rainfall for the ablation season (Jun.-Oct.) was 89% and 11%, respectively. The separation of the hydrograph is complex, site and time-specific, which needs attention. |
| first_indexed | 2024-03-12T01:38:23Z |
| format | Article |
| id | doaj.art-a30e4dae1aa94fb2a3e0f7ab5c18a46d |
| institution | Directory Open Access Journal |
| issn | 2214-5818 |
| language | English |
| last_indexed | 2024-03-12T01:38:23Z |
| publishDate | 2023-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Hydrology: Regional Studies |
| spelling | doaj.art-a30e4dae1aa94fb2a3e0f7ab5c18a46d2023-09-11T04:17:11ZengElsevierJournal of Hydrology: Regional Studies2214-58182023-10-0149101495Heterogeneity in glacio-hydrological processes and estimation of different components in streamflow from central Himalayan glaciersAkshaya Verma0Amit Kumar1Sameer K. Tiwari2Rakesh Bhambri3Kalachand Sain4Santosh K. Rai5Pawan Patidar6Wadia Institute of Himalayan Geology, 33 GMS Road, Dehra Dun 248001, Uttarakhand, IndiaCorresponding author.; Wadia Institute of Himalayan Geology, 33 GMS Road, Dehra Dun 248001, Uttarakhand, IndiaWadia Institute of Himalayan Geology, 33 GMS Road, Dehra Dun 248001, Uttarakhand, IndiaWadia Institute of Himalayan Geology, 33 GMS Road, Dehra Dun 248001, Uttarakhand, IndiaWadia Institute of Himalayan Geology, 33 GMS Road, Dehra Dun 248001, Uttarakhand, IndiaWadia Institute of Himalayan Geology, 33 GMS Road, Dehra Dun 248001, Uttarakhand, IndiaWadia Institute of Himalayan Geology, 33 GMS Road, Dehra Dun 248001, Uttarakhand, IndiaStudy region: The study region includes two glaciers from Alaknanda and Bhagirathi river basins in Central Himalaya. Study focus: The study focuses on the analysis of high-resolution isotopic data sets of different components of the streamflow with ground-based meteorological observations from Automatic Weather Stations (AWSs) at two glaciers (∼4000 m asl). New hydrological insights for the region: The glaciers in the Himalaya are difficult to access due to their topography and climate and require complicated logistics to work in the region. Hence, the understanding of hydrological processes in this region is limited. The debris cover (sublimation of surface ice), orientation and microclimatic conditions (temperature, wind and rain) of the two glaciers control the isotope signatures of the glacier surface ice in the Himalayan region, indicating heterogeneity and complexity in the isotopic compositions. The studies estimating the contribution of different components to the streamflow downstream using generalized values of stable isotopes (glacier ice, snow) are complicated, as several glaciers contribute to the total runoff in large basins. The stable isotopes of streamflow indicate the contribution of snow and ice melt during early ablation (May-Jun.); rainfall and ice melt during the ISM (Jul.-Aug.) and ice melt during late ablation (Sep.-Oct.). The contribution of snow-glacier melt and rainfall for the ablation season (Jun.-Oct.) was 89% and 11%, respectively. The separation of the hydrograph is complex, site and time-specific, which needs attention.http://www.sciencedirect.com/science/article/pii/S2214581823001829Central HimalayaDebris-covered glacier, stable water isotopesGlacierStreamflow generation |
| spellingShingle | Akshaya Verma Amit Kumar Sameer K. Tiwari Rakesh Bhambri Kalachand Sain Santosh K. Rai Pawan Patidar Heterogeneity in glacio-hydrological processes and estimation of different components in streamflow from central Himalayan glaciers Journal of Hydrology: Regional Studies Central Himalaya Debris-covered glacier, stable water isotopes Glacier Streamflow generation |
| title | Heterogeneity in glacio-hydrological processes and estimation of different components in streamflow from central Himalayan glaciers |
| title_full | Heterogeneity in glacio-hydrological processes and estimation of different components in streamflow from central Himalayan glaciers |
| title_fullStr | Heterogeneity in glacio-hydrological processes and estimation of different components in streamflow from central Himalayan glaciers |
| title_full_unstemmed | Heterogeneity in glacio-hydrological processes and estimation of different components in streamflow from central Himalayan glaciers |
| title_short | Heterogeneity in glacio-hydrological processes and estimation of different components in streamflow from central Himalayan glaciers |
| title_sort | heterogeneity in glacio hydrological processes and estimation of different components in streamflow from central himalayan glaciers |
| topic | Central Himalaya Debris-covered glacier, stable water isotopes Glacier Streamflow generation |
| url | http://www.sciencedirect.com/science/article/pii/S2214581823001829 |
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