申星, 梁洪宝, 王家庆, 郭炳辉. 利用PS-InSAR技术监测山西北部地表形变场[J]. 华北地震科学, 2019, 37(1): 6-11. DOI: 10.3969/j.issn.1003-1375.2019.01.002
引用本文: 申星, 梁洪宝, 王家庆, 郭炳辉. 利用PS-InSAR技术监测山西北部地表形变场[J]. 华北地震科学, 2019, 37(1): 6-11. DOI: 10.3969/j.issn.1003-1375.2019.01.002
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SHEN Xing, LIANG Hongbao, WANG Jiaqing, GUO Binghui. Surface Deformation Monitoring of Northern Shanxi Area Based on the Technology of PS-InSAR[J]. North China Earthquake Sciences, 2019, 37(1): 6-11. DOI: 10.3969/j.issn.1003-1375.2019.01.002
Citation: SHEN Xing, LIANG Hongbao, WANG Jiaqing, GUO Binghui. Surface Deformation Monitoring of Northern Shanxi Area Based on the Technology of PS-InSAR[J]. North China Earthquake Sciences, 2019, 37(1): 6-11. DOI: 10.3969/j.issn.1003-1375.2019.01.002
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利用PS-InSAR技术监测山西北部地表形变场

Surface Deformation Monitoring of Northern Shanxi Area Based on the Technology of PS-InSAR

    摘要
  • 摘要: 选用10景RADARSAT-2降轨宽幅雷达干涉数据，利用相干点目标PS-InSAR技术进行时间序列处理，获取了山西断裂带北部特定区域内2011—2014年地表形变场。结果表明：①断裂带中段的定襄县平原区域有较好的相干性，沿卫星视线向（LOS）的年形变速率最小值为-5±2 mm/a，最大值为-14±2 mm/a，显示断裂带附近以拉张正断层活动为主兼具逆时针差异运动特征；②地表形变特征的空间分布表明城市工业生产和生活抽取地下水是地表形变的主要诱因，最大沉降区域沿NNE向展布与研究区内断裂一致表明形变趋势受断裂带的影响明显；③利用已有的GPS复测资料对识别的PS点目标进行可靠性验证，结果表明两者的观测结果能够很好的吻合，证明该方法在监测面状区域形变场运动趋势的有效性。

     

    Abstract: The major advantage of PS-InSAR is inversion of ground surface slow change for a long time based on high coherent targets. Using 10 single look complex (SLC) RADARSAT-2 wide dates over north of Shanxi fault zone,the ground deformation field during 2011-2014 and ite details were obtained with PS-InSAR method. The results show that:① Between the two fault zones in Dingxiang, the coherence is better, most coherent point targets display lateral slip rate between -5±2 mm/a and -14±2 mm/a in LOS, which shows that this fault are mainly in tensional activities with reverse differential motion characteristics; ② The spatial distribution of subsidence shows that groundwater extraction of industry and daily life are the main reasons, the major subsidence zones, trending NNE, coincide with the orientations of the fault zones, implying subsidence distribution is controlled by the fault; ③ Reliability verification is reasonable between existing GPS and PS point targets, the result is consistency and proved the effectiveness of this method.

     

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