Journal of Systems Engineering and Electronics ›› 2021, Vol. 32 ›› Issue (6): 1284-1303.doi: 10.23919/JSEE.2021.000109

• RADAR DIFFERENTIAL INTERFEROMETRY TECHNIQUES AND APPLICATIONS • Previous Articles     Next Articles

InSAR measurements of surface deformation over permafrost on Fenghuoshan Mountains section, Qinghai-Tibet Plateau

Honglei YANG1,*(), Qiao JIANG2(), Jianfeng HAN1(), Ki-Yeob KANG3, Junhuan PENG1()   

  1. 1 School of Land Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China
    2 Central Southern China Electric Power Design Institute Co., Ltd, China Power Engineering Consulting Group Corporation, Wuhan 430071, China
    3 Australasian Joint Research Centre for Building Information Modelling, School of Built Environment, Curtin University, Perth WA 6845, Australia
  • Received:2021-03-10 Online:2022-01-05 Published:2022-01-05
  • Contact: Honglei YANG E-mail:hongleiyang@cugb.edu.cn;2640105418@qq.com;924247310@qq.com;pengjunhuan@163.com
  • About author:|YANG Honglei was born in 1983. He is a Ph.D. and an associate professor in China University of Geosciences (Beijing). His research interests include deformation monitoring using interferometric synthetic aperture radar interferomet (InSAR) time series and remote sensing data processing. E-mail: hongleiyang@cugb.edu.cn||JIANG Qiao was born in 1994. He graduated from China University of Geosciences with a master’s degree. He is an engineer of Central Southern China Electric Power Design Institute Co., Ltd. His current research interests are development of GPS and interferometric synthetic aperture radar algorithms, and studies of structural and ground deformations. E-mail: 2640105418@qq.com||HAN Jianfeng was born in 1996. He is a graduate student in China University of Geosciences (Beijing). His research interest is interferometric synthetic aperture radar. E-mail: 924247310@qq.com||KANG Ki-Yeob was born in 1987. He received his bachelor’s and master’s degrees in naval architecture and ocean engineering, in 2012 and 2014, from Pusan National University in South Korea and Ph.D. degree in construction management from Curtin University in Perth, Australia in March 2020. His research interests are oil and gas energy resources, offshore drilling technologies, construction materials, engineering design, and facility management. E-mail: kiyeob.kang@postgrad.curtin.edu.au||PENG Junhuan was born in 1964. He received his Ph.D. degree in geodesy from Wuhan University, Wuhan, China, in 2003. He is a professor with the School of Land Science and Technology, China University of Geosciences, Beijing, China. His current research interests are in the areas of temporal-spatial data analysis, surveying adjustment, applied statistics, and their associated application in surveying engineering, image geodesy, remote sensing, and satellite geodesy. E-mail: pengjunhuan@163.com
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (42174026), and the National Key Research and Development Program of China (2021YFE011004).

Abstract:

The permafrost development in the Qinghai-Tibet Engineering Corridor (QTEC) is affected by natural environment changes and human engineering activities. Human engineering activities may damage the permafrost growing environment, which in turn impact these engineering activities. Thus high spatial-temporal resolution monitoring over the QTEC in the permafrost region is very necessary. This paper presents a method for monitoring the frozen soil area using the intermittent coherence-based small baseline subset (ICSBAS). The method can improve the point density of the results and enhance the interpretability of deformation results by identifying the discontinuous coherent points according to the coherent value of time series. Using the periodic function that models the seasonal variation of permafrost, we separate the long wavelength atmospheric delay and establish an estimation model for the frozen soil deformation. Doing this can raise the monitoring accuracy and improve the understanding of the surface deformation of the frozen soil. In this study, we process 21 PALSAR data acquired by the Alos satellite with the proposed ICSBAS technique. The results show that the frozen soil far from the QTR in the study area experiences frost heave and thaw settlement (4.7 cm to 8.4 cm) alternatively, while the maximum settlement along the QTR reaches 12 cm. The interferomatric syntnetic aperture radar (InSAR)-derived results are validated using the ground leveling data nearby the Beiluhe basin. The validation results show the InSAR results have good consistency with the leveling data in displacement rates as well as time series. We also find that the deformation in the permafrost area is correlated with temperature, human activities and topography. Based on the interfering degree of human engineering activities on the permafrost environment, we divide the QTEC along the Qinghai-Tibet Railway into engineering damage zone, transition zone and natural permafrost.

Key words: permafrost, Qinghai-Tibet Plateau, small baseline subset interferomatric syntnetic aperture radar (SBAS-InSAR), deformation model