Role of glacier runoff in the Heihe Basin

• Main Authors: 坂井 亜規子, 藤田 耕史, 中尾 正義, YAO Tandong
• Format: Other/Unknown Material
• Language: English
• Published: 総合地球環境学研究所 2005
• Subjects: ice core
• Online Access: https://chikyu.repo.nii.ac.jp/?action=repository_uri&item_id=1030; http://id.nii.ac.jp/1422/00000978/; https://chikyu.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1030&item_no=1&attribute_id=22&file_no=1

We estimated the fluctuation of precipitation and air temperature from Dunde ice core data since 1606 comparing to meteorological data taken near the July 1st glacier since 1930s. Then, we calculated the discharges from glaciers and glacier-free areaFurthermore, we analyzed the sensitivity of those discharges to meteorological factor. The result revealed that calculated discharge from glacier-free area increased with precipitation. Meanwhile, calculated discharge from glaciers decreased with precipitation. Since little precipitation cause expose the glacier ice surface, which can absorb almost solar radiation, then glacier melt accelerated. Then, relatively large discharge from glacier can be provided when the discharge from glacier-free area is less. Therefore, discharge from glacier make up for the shortage of discharge from glacier-free area due to less precipitation. Then, water supply for living people in the oasis and desert would have been maintained from ancient days.