Journal
ENVIRONMENTAL EARTH SCIENCES
Volume 71, Issue 11, Pages 4835-4847Publisher
SPRINGER
DOI: 10.1007/s12665-013-2875-0
Keywords
Stable isotope of Oxygen and Hydrogen; Isotopic characterization of Precipitation; Source of moisture; Bhagirathi Basin; Uttarakhand India
Funding
- National Institute of Hydrology, Roorkee
- Department of Atomic Energy through BRNS, Mumbai
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River Ganges one of important rivers in the northern part of India receives water from two of its tributaries, Alaknanda and Bhagirathi. In this present study, we have tried to characterise the precipitation in the Bhagirathi River Basin. The study shows that isotopic composition of precipitation shows depleted nature during monsoon period due to moisture source from the oceanic region and from African region of Indian Ocean and enriched isotopic composition during non-monsoon period due to moisture source from westerlies and local evaporation. The study also shows that temperature and amount show expected positive and negative relationship with individual locations. A positive relationship is exhibited by amount for the entire region due to depleted isotopic composition with increase in altitude. The altitude effect shows that there is a depletion of up to -0.24 to -0.29 aEuro degrees of isotopic composition with an increase in 100 m of elevation.
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