Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Remote Sensing Technology and Application》 2017-06
Add to Favorite Get Latest Update

Research on Glacier Change Monitoring in Nianchu River Basin

Zhaxi Yangzong;Li Lin;Zhuo Ma;Feng Yan;Li Xuedong;Baima Yangzong;Tibetan Institute of Atmospheric Environment and Science;Climate Center of Tibet Autonomous Region;Chinese Academy of Forestry;Forestry Experiment Center of North China,Chinese Forestry Academy;  
This study extracted the local glacier information over the Nianchu river basin in the Tibet in1996 and 2005 by using ice index,snow index and water index of Landsat TM-5 multi-spectral images,and Synthetic Aperture Radar(SAR)intensity and coherence information of ERS-1/2 and Envisat ASAR.The optimized features were determined by their classification accuracies based on Support Vector Machine(SVM)classifier.The result showed that the composition of multi-spectral and SAR features could effectively discriminate the water and ice from other types,with overall accuracies of 84%and 85%in 1996 and2005,respectively.Based on the thematic information of these two years,the changes of the local glacial area and boundary were detected.The result showed that the glacial area of the Nianchu river basin was reduced by 154.7 km2,which mainly caused by the climate warming.
【Fund】: 2014年西藏自治区第一批重点科技项目;; 国家自然地区科学基金项目“基于MODISFY-3VIRR遥感数据的藏北地区干旱遥感监测方法研究”(41465006);; 西藏自治区气象局高原遥感应用技术创新团队基金资助
【CateGory Index】: P343.6
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved