摘要
多年冻土随气候变暖逐渐发生退化,严重影响多年冻土区工程建设的稳定性,因此实时、准确地监测多年冻土变化迫在眉睫。合成孔径雷达干涉测量(Interferometric Synthetic Aperture Radar,InSAR)作为一种新型对地观测技术,可以全天时、全天候的对多年冻土区地表进行大范围监测,成为一种有效的监测手段。主要介绍InSAR技术在多年冻土区近20年的研究进展与未来发展趋势。首先介绍了InSAR技术的基本原理和常用的SAR系统,然后基于InSAR技术的发展,概述了D-InSAR和时序InSAR技术在多年冻土区的应用,并对目前发展的冻融模型进行总结,分析了多年冻土区地表形变影响因素,最后展望未来InSAR技术在多年冻土监测中的发展趋势与面临的主要问题,以期为科研人员提供系统的应用介绍。
Permafrost is gradually degraded with climate warming,which seriously affects the stability of engineering construction in permafrost regions. Therefore,real-time and accurate monitoring of permafrost changes is urgent. Synthetic Aperture Radar Interferometry(In SAR),as a new type of earth observation technology,can monitor the surface of permafrost regions on a large scale at all times and in all weather,and become an effective monitoring method. This paper aims to introduce the research progress and future development trends of In SAR technology in permafrost regions in the past two decades. Firstly,the basic principle of In SAR technology and SAR system are introduced. Then,based on the development of In SAR technology,the application of D-In SAR and multi-temporal In SAR in permafrost regions is outlined. It also summarizes the currently developed freeze-thaw models and analyzes the influencing factors of surface deformation in permafrost regions. Finally,look forward to the future development trend and main problems of In SAR technology in permafrost monitoring,in order to provide scientific research personnel with a systematic application introduction.
作者
贾诗超
张廷军
范成彦
刘琳
邵婉婉
JIA Shichao;ZHANG Tingjun;FAN Chengyan;LIU Lin;SHAO Wanwan(Key Laboratory of Western China's Environmental Systems(Ministry of Education),College of Earth and Environmental Sciences,Lanzhou University,Lanzhou 730000,China;Earth System Science Programme,Faculty of Science,The Chinese University of Hong Kong,Hong Kong 999077,China)
出处
《地球科学进展》
CAS
CSCD
北大核心
2021年第7期694-711,共18页
Advances in Earth Science
基金
中国科学院A类先导科技专项“祁连山区冻土变化及水文生态效应”(编号:XDA20100103)和“第三极与泛第三极及其与南北极联动关系”(编号:XDA20100313)资助。
关键词
多年冻土
INSAR
地表形变
冻融模型
Permafrost
In SAR
Ground surface deformation
Freeze-thaw model
