%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Azam, M. F.
%A Wagnon, Patrick
%A Vincent, C.
%A Ramanathan, A. L.
%A Kumar, N.
%A Srivastava, S.
%A Pottakkal, J. G.
%A Chevallier, Pierre
%T Snow and ice melt contributions in a highly glacierized catchment of Chhota Shigri Glacier (India) over the last five decades
%D 2019
%L fdi:010076513
%G ENG
%J Journal of Hydrology
%@ 0022-1694
%K Himalayan glaciers ; Mass balance ; Hydrology ; Ice-melt runoff ; Snow-melt ; runoff
%K INDE ; CHHOTA SHIGRI GLACIER
%M ISI:000476962800059
%P 760-773
%R 10.1016/j.jhydrol.2019.04.075
%U https://www.documentation.ird.fr/hor/fdi:010076513
%> https://www.documentation.ird.fr/intranet/publi/2019/08/010076513.pdf
%V 574
%W Horizon (IRD)
%X Glacier-wide mass balances and runoffs are reconstructed over 1969-2016 for Chhota Shigri Glacier catchment (India) applying a glacio-hydrological model. The model is forced using in-situ daily air-temperature and precipitation records from the meteorological stations at Bhuntar Observatory (1092 m a.s.l.), glacier base camp (3850 m a.s.l.) and glacier side moraine (4863 m a.s.l.). The modelled mean annual mass balance is -0.30 +/- 0.36m w.e.a(-1) (meter water equivalent per year), while the mean catchment-wide runoff is 1.56 +/- 0.23 m w.e.a(-1) over 1969-2016. Three periods are distinguished in the reconstructed mass balance and runoff series. Periods I (1969-1985) and III (2001-2016) show glacier mass wastage at rates of -0.36 and - 0.50 m w.e.a(-1), respectively, corresponding to catchment-wide runoffs of 1.51 and 1.65 m w.e.a(-1), respectively. Conversely, period II (1986-2000) exhibits steady-state conditions with average mass balances of -0.01 m w.e.a(-1), and corresponding runoff of 1.52m w.e.a(-1). The reduced ice melt (0.20m w.e.a(-1)) over period II, in agreement with steady-state conditions, is compensated by the increased snow melt (1.03 m w.e.a(-1)), providing almost similar catchment-wide runoffs for period I and II. The increased runoff after 2000 is mainly governed by increased ice melt (0.32m w.e.a(-1)) over period III. Snow accumulation in winter and summer seasons together control the glacier-wide mass balances as well as catchment-wide runoffs. Snow melt contributes the maximum to the total mean annual runoff with 63% share while glacier melt and rain contribute 17% and 20% respectively over the whole period.
%$ 062