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

doi:10.7522/j.issn.1000-0240.2017.0315

冰川冻土 ›› 2017, Vol. 39 ›› Issue (6): 1281-1288.doi: 10.7522/j.issn.1000-0240.2017.0315

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

李毅^1,2, 闫世勇^1,2, 李治国³, 周洪月^1,2, 郑一桐^1,2, 刘茜茜^1,2

1. 中国矿业大学环境与测绘学院, 江苏徐州 221116;
2. 国土环境与灾害监测国家测绘地理信息局重点实验室, 江苏徐州 221116;
3. 商丘师范学院测绘与规划学院, 河南商丘 476000

收稿日期:2017-04-27 修回日期:2017-09-27 出版日期:2017-12-25 发布日期:2018-04-03
通讯作者: 闫世勇,E-mail:yan_shiyong@163.com. E-mail:yan_shiyong@163.com
作者简介:李毅(1993-),男,山西晋中人,2016年在山西大同大学获学士学位,现为中国矿业大学在读硕士研究生,从事冰川变化及雷达遥感应用研究.E-mail:ly668680@126.com
基金资助:
江苏省基础研究计划（自然科学基金）项目（BK20150189）；中国科学院数字地球重点实验室开放基金项目（2016LDE002）；国家自然科学基金面上项目（41671072）资助

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

LI Yi^1,2, YAN Shiyong^1,2, LI Zhiguo³, ZHOU Hongyue^1,2, ZHENG Yitong^1,2, LIU Xixi^1,2

1. School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, Jiangsu, China;
2. National Administration of Surveying Mapping and Geoinformation(NASMG) Key Laboratory of Land Environment and Disaster Monitoring, Xuzhou 221116, Jiangsu, China;
3. College of Surveying and Planning, Shangqiu Normal University, Shangqiu 476000, Henan, China

Received:2017-04-27 Revised:2017-09-27 Online:2017-12-25 Published:2018-04-03

摘要/Abstract

摘要： 利用Landsat-8 OLI传感器获取的2016年3-9月覆盖天山西段托木尔峰-汗腾格里地区的3期光学遥感影像数据，基于频谱归一化互相关算法提取并分析了该地区南伊内里切克冰川在最近一年消融期内不同时段的表面运动速度分布及其时空变化特征。研究结果表明：2016年消融期内靠近该冰川上游区域可观测到约为55 cm·d^-1最大运动速度；由于受到冰川下游物质补给量减弱、表碛物增多等因素影响造成冰川末端区域运动速度最小，整个消融期内冰川主体运动速度基本介于20~50 cm·d^-1之间，其平均运动速度约为35 cm·d^-1。而且，可观测到位于冰川上游区域在2016年3月9日至9月17日时段内，冰川运动速度呈递增趋势，相反位于冰川下游区域冰川运动速度呈现减弱趋势。另外，与早期研究对比可知，该冰川运动速度有所减缓且冰川末端明显处于退缩状态。

关键词: 南伊内里切克冰川, 光学遥感影像, 归一化互相关算法, 冰川消融期, 冰川运动速度

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.

Key words: South Inylchek Glacier, optical remote sensing image, normalized cross correlation algorithm, ablation period of glacier, glacier flow velocity

中图分类号:

P343.6

李毅, 闫世勇, 李治国, 周洪月, 郑一桐, 刘茜茜. 基于Landsat-8 OLI影像的天山南伊内里切克冰川2016年冰川表面运动状态提取与分析[J]. 冰川冻土, 2017, 39(6): 1281-1288.

LI Yi, YAN Shiyong, LI Zhiguo, ZHOU Hongyue, ZHENG Yitong, LIU Xixi. The flow state of South Inylchek Glacier in the Tianshan Mountains in 2016: extraction and analysis based on Landsat-8 OLI image[J]. JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY, 2017, 39(6): 1281-1288.

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

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

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