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Water discharge from the Lirung Glacier in Langtang Valley, Nepal Himalayas, 1996

1997; Volume: 15; Issue: 15 Linguagem: Inglês

0913-4190

Akiko Sakai, Koji Fujita, Tatsuto Aoki, Katsuhiko Asahi, Masayoshi Nakawo,

Aerospace Engineering and Energy Systems

Discharge from the Lirung Glacier per se was estimated for 6 months from May to October in 1996. The glacier was covered with thick debris, and the direct measurement of the melt rate at the surface is rather difficult. The discharge was hence estimated by measuring the water flow of a river out of the glacier, in which the water budget of a big lake located between the glacier and the observation site was taken into consideration. The discharge increased abruptly near the end of June, and showed the largest value during the monsoon season, July to August. It decreased gradually toward the post monsoon season. The discharge from the glacier and the river flow was similar in seasonal change, but they differed significantly on a daily basis.