The active faults deformation, with distinct temporal and spatial variations, requires long-term and effective monitoring. InSAR (interferometry synthetic aperture Radar), with the advantages of high efficiency, wide coverage and low cost, is one of the main technical means for ground surface deformation survey in recent years. In this paper, the small differential deformation of the main active faults in Tangshan urban area was monitored by the interferometric point target analysis. Two kinds of radar data were used: the Wide strip mode of RADARSAT-2 C-band with 30m spatial resolution and the Strip mode of TerraSAR-X X-band with 3 m spatial resolution. The results show that the differential deformation of Tangshan-Guye active fault is obvious with the maximum differential velocity of 2 mm/a. In this case, the deformation results from RADARSAT-2 C-band medium resolution data can clearly show the tiny differential deformation between the two sides of the active faults. However, TerraSAR-X X-band data, with shorter wavelength, is more obviously affected by the change of surface cover. Compared with this deformation, the vertical differential deformation between the two sides of active faults is too small to be separated from the TerraSAR results.
张玲, 刘斌, 葛大庆, 郭小方. 基于多源SAR数据唐山城区活动断裂微小差异形变探测[J]. 国土资源遥感, 2020, 32(3): 114-120.
ZHANG Ling, LIU Bin, GE Daqing, GUO Xiaofang. Detecting tiny differential deformation of Tangshan urban active fault using multi-source SAR data. Remote Sensing for Land & Resources, 2020, 32(3): 114-120.
Qu C Y, Shan X J, Zhang G H, et al. The research progress in measurement of fault activity by time series InSAR and discussion of related issues[J]. Seismology and Geology, 2014,36(3):731-748.
doi: 10.3969/j.issn.0253-4967.2014.03.015
[3]
Zhang L, Cao D Y, Zhang J F, et al. Interseismic fault movement of Xianshuihe fault zone based on across-fault deformation data and InSAR[J].Pure and Applied Geophysics, 2019(176):649-667.
Zhou H T, Guo L Q, Zhang L C. Study on modern activity of Tangshan fault[J]. North China Earthquake Sciences, 2009,27(3):17-22.
[5]
Ferretti A, Prati C, Rocca F. Permanent scatterers in SAR interferometry[J]. IEEE Transactions on Geoscience and Remote Sensing, 2001,39(1):1-20.
[6]
Wemer C, Wegmiiller U, Strozzi T, et al. Interferometric point target analysis for deformation mapping[J].IEEE Transactions on Geoscience and Remote Sensing, 2003(7):4362-4364.
[7]
Ferretti A, Tamburini A, Novali F, et al. Impact of high resolution radar imagery on reservoir monitoring[J]. Energy Procedia, 2011,(4):3465-3471.
doi: 10.1016/j.egypro.2011.02.272
[8]
Berardino P, Fornaro G, Lanari R, et al. A new algorithm for surface deformation monitoring based on small baseline differential SAR interferograms[J]. IEEE Transactions on Geoscience and Remote Sensing, 2002,40(11):2375-2383.
doi: 10.1109/TGRS.2002.803792
Li C Y, Wang Y P, Wang Z C. Some analyses on the relation between the upper offset point and the latest activity times of buried faults in cities of eastern China:Taking the Xingtai and Tangshan earthquake regions as an example[J]. Seismology and Geology, 2007,29(2):431-445.
Wang J M, Wang W Q, Su Y P. The fracture activities and geological calamity in Tangshan City[J]. Journal of Hebei Institute of Technology, 1998,20(1):75-83.
[12]
Liu K, Qu G S, Chen J Q, et al. Recurrence characteristics of major earthquakes in the Tangshan area,north China[J]. Acta Geologica Sinica-English Edition, 2013,87(1):254-271.
doi: 10.1111/1755-6724.12046
2020, Vol. 32 
), 刘斌, 葛大庆, 郭小方
