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• CN 62-1072/P
• ISSN 1000-0240
• 创刊于1979年
• 主管单位：中国科学院
• 主办单位：中国科学院寒区旱区
•                  环境与工程研究所
•                  中国地理学会

• 冰冻圈变化 •

基于Landsat-8 OLI影像的天山南伊内里切克冰川2016年运动状态提取与分析

1. 中国矿业大学环境与测绘学院
• 收稿日期:2017-04-27 修回日期:2017-09-08 出版日期:2018-03-08
• 通讯作者: 闫世勇
• 基金资助:

The flow state of South Inylchek Glacier in the Tianshan Mountains in 2016: extraction and analysis based on Landsat-8 OLI image

1.
• Received:2017-04-27 Revised:2017-09-08 Online:2018-03-08
• Supported by:

Abstract: In this paper, the three-stage optical Landsat-8 OLI remote sensing imagery from March to September in 2016 were acquired, which covered the Tomur-Khan Tengri area in the western Tianshan Mountains. The flow velocity distribution on the South Inylchek Glacier, extracted by the spectral normalized cross-correlation algorithm, was analyzed for its temporal/spatial variation characteristics during the ablation period. The result showed that the maximum flow velocity up to ~55 cm·d-1 could be observed in the upper part of the glacier during the ablation period of 2016. Due to the impact of both less ice mass supply and increasing debris cover on the glacier surface, the velocity was smallest at the terminus. During the whole ablation period, the flow velocity of glacier trunk was in between 20 cm·d-1 and 50 cm·d-1, with an average of about 35 cm·d-1. Moreover, on the contrary to the decreasing velocity in the lower part of the glacier, the velocity in the upper part of the glacier had been increasing from 9 March to 17 Sept. 2016. In conclude, compared with the earlier studies, the glacier flow velocity has slowed down and the terminus has retreated obviously.

• P2