Recognition of salt crust types by means of PolSAR to reflect the fluctuation processes of an ancient lake in Lop Nur
文献类型：期刊论文
| 作者 | Liu, Chang-An1; Gong, Huaze1; Shao, Yun1; Yang, Zhi1; Liu, Long1; Geng, Yuyang1 |
| 刊名 | Remote Sensing of Environment
 |
| 出版日期 | 2016 |
| 卷号 | 175页码:148-157 |
| 关键词 | SATELLITE SENSOR DATA MODIS CLOUD MASK AVHRR NDVI DATA GREEN-UP DATE VEGETATION DYNAMICS MONITORING VEGETATION HARMONIC-ANALYSIS FOURIER-ANALYSIS NOISE-REDUCTION DATA SET |
| 通讯作者 | Gong, Huaze (gonghz@radi.ac.cn) |
| 英文摘要 | Lop Nur once was a huge lake located in northwestern China. Its environmental evolution is significant for understanding historical global climate change. At present, there is no surface water in Lop Nur Lake Basin, and on SAR images it looks like an "Ear". The objective of this article is to recognize different types of salt crust by surface roughness parameters and interpret their environmental meanings in Lop Nur. Surface roughness parameter estimation, by means of microwave remote sensing technology, is a topic which is intensively studied yet not solved satisfactorily. In this article, the potential of using Polarimetric Synthetic Aperture Radar (PolSAR) acquisitions for the estimation of surface roughness parameter in Lop Nur Lake Basin is investigated. A new parameter Slis proposed to characterize surface roughness and to discriminate salt crust types. Through the analysis of scattering mechanisms, the physical meaning of the PolSAR parameter Single Bounce Eigenvalue Relative Difference (SERD) is reinterpreted and it is used to retrieve parameterSl. A good linear correlation between the measured surface roughness parameter Sland SERD with an R2value of 0.72 was obtained. Furthermore, the distributions of different salt crusts in the certain lake area were analyzed. Based on hypotheses of the evolution of surface salt crust and the drying-up cycle of lakes, the fluctuation processes of an ancient lake in Lop Nur were discussed theoretically. These can help to have a better understanding of environmental changes in arid and semi-arid regions. © 2016 The Authors. Published by Elsevier Inc. |
| 学科主题 | Environmental Sciences & Ecology; Remote Sensing; Imaging Science & Photographic Technology |
| 类目[WOS] | Environmental Sciences ; Remote Sensing ; Imaging Science & Photographic Technology |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:20160201802256 |
| 源URL | [http://ir.radi.ac.cn/handle/183411/39156]  |
| 专题 | 遥感与数字地球研究所_SCI/EI期刊论文_期刊论文 |
| 作者单位 | 1. Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Datun Road, Beijing 2.100101, China 3. University of Chinese Academy of Science, Beijing 4.100049, China |
| 推荐引用方式 GB/T 7714 | Liu, Chang-An,Gong, Huaze,Shao, Yun,et al. Recognition of salt crust types by means of PolSAR to reflect the fluctuation processes of an ancient lake in Lop Nur[J]. Remote Sensing of Environment,2016,175:148-157. |
| APA | Liu, Chang-An,Gong, Huaze,Shao, Yun,Yang, Zhi,Liu, Long,&Geng, Yuyang.(2016).Recognition of salt crust types by means of PolSAR to reflect the fluctuation processes of an ancient lake in Lop Nur.Remote Sensing of Environment,175,148-157. |
| MLA | Liu, Chang-An,et al."Recognition of salt crust types by means of PolSAR to reflect the fluctuation processes of an ancient lake in Lop Nur".Remote Sensing of Environment 175(2016):148-157. |
入库方式： OAI收割
来源：遥感与数字地球研究所
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