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精密测量院利用卫星InSAR开展四川泸定6.8级地震同震形变与冰川稳定性评估工作（图）
卫星 四川泸定 地震 评估
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2023/11/6
2022年9月5日12时52分，四川省甘孜州泸定县发生6.8级地震，震源深度16千米，震中位于北纬29.59度，东经102.08度（中国地震台网正式测定）。本次地震及其诱发的大量山体滑坡以及可能的小范围冰崩等地质灾害，造成了重大人员伤亡及财产损失。
2022年1月8日青海门源6.9级地震InSAR同震形变场（图）
青海门源 6.9级地震 InSAR同震形变场
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2023/1/16
北京时间2022年1月8日01时45分，青海海北洲门源县发生6.9级地震，震中位于N 37.77°，E 101.26°，震源深度10km。通过差分干涉测量（D-InSAR）方法处理哨兵1号（Sentinel-1）卫星影像，干涉雷达（InSAR）初步结果显示此次地震为走滑地震，降轨最大形变量约为70cm。
在全球变暖的背景下,高亚洲山地冰川受印度洋季风 和西风带的气候影响,大部分冰川出现了不同程度的消融 和退缩.同时,高亚洲作为除极地冰盖以外全球第二大的 冰川聚集地,是长江、怒江等亚洲７条河流的重要水源,被 称为“亚洲水塔”,养育世界１/３的人口,对区域内水资源、 水循环、气候与环境等有重要影响.然而,由于该区域地 形复杂、海拔较高等原因,只有少量的冰川具有实地观测 资料,难以开展大范围、高分辨率、...
2017年九寨沟MS7.0地震InSAR同震形变场与断层滑动分布反演
2017年九寨沟MS7.0地震 InSAR 多视向 滑动分布
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2019/1/4
联合升、降轨Sentinel-1A卫星的差分干涉数据反演2017年8月8日四川九寨沟MS7.0地震的断层滑动分布。首先对SAR复数干涉像对进行"二通"差分干涉处理，获取了覆盖震区的多视向InSAR同震形变场；然后利用四叉树和均匀采样法分别进行近、远场数据降采样，在此基础上，利用弹性半空间矩形位错模型，反演发震断层的几何参数和最优滑动分布。结果显示：①InSAR干涉条纹呈蝶状分布，最大LOS向沉降和...
ATMOSPHERIC PHASE DELAY CORRECTION OF D-INSAR BASED ON SENTINEL-1A
Atmospheric Phase Sentinel-1A, D-InSAR Tropospheric Delay Maps GACOS Subsidence Monitoring Yellow River Delta
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2018/5/14
In this paper, we used the Generic Atmospheric Correction Online Service for InSAR (GACOS) tropospheric delay maps to correct the atmospheric phase delay of the differential interferometric synthetic ...
APPLICATION OF INSAR TECHNOLOGY IN GEOGRAPHICAL SITUATION MONITORING
InSAR Geographical situation monitoring D-InSAR The terrain Deformation Interference figure Application
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2018/5/15
In this paper, based on the geographical situation monitoring project of the earthquake zone of ludian county, zhaotong city, yunnan province,using the data of the radarsat-2 satellite (time frame is ...
ESTIMATION OF STATIC COULOMB STRESS CHANGE AND STRONG MOTION SIMULATION FOR JIUZHAIGOU 7.0 EARTHQUAKE BASE ON SENTINEL-1 INSAR DATA INVERSION
InSAR Coulomb Stress Change Slip Inversion Strong Motion Aftershocks Slip Model Jiuzhaigou Earthquake
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2018/5/15
On August 8, 2017, an earthquake of M 7.0 occurred at Jiuzhaigou. Based on the Sentinel-1 satellite InSAR data, we obtained coseismic deformation field and inverted the source slip model. Result...
EVALUATION OF DATA APPLICABILITY FOR D-INSAR IN AREAS COVERED BY ABUNDANT VEGETATION
Evaluation of Data Applicability D-InSAR Geologic Hazard Areas Covered by Abundant Vegetation Spatial Decorrelation Interferometric Constraints
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2018/5/16
In the past few years, the frequent geological disasters have caused enormous casualties and economic losses. Therefore, D-InSAR (differential interferometry synthetic aperture radar) has been widely ...
MEASURING SURFACE DEFORMATION IN GLACIER RETREATED AREAS BASED ON PS-INSAR – GELADANDONG GLACIER AS A CASE STUDY
China Glacier retreat InSAR Paraglacial Slope Failure (PSF) Qinghai-Tibetan Plateau (QTP)
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2018/5/15
Glaciers are retreating in many parts of the world as a result of global warming. Many researchers consider Qinghai-Tibetan Plateau as a reference for climate change by measuring glaciers retreat on t...
RESEARCH ON THE CRUSTAL DEFORMATION CHARACTERISTICS IN BEIJING USING INSAR AND GNSS TECHNOLOGY
Beijing INSAR GNSS Crustal Deformation Geological structure
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2018/5/14
In this paper, we tried to reveal the characteristics of the crustal deformation in both the horizontal and vertical directions in Beijing using InSAR and GNSS observations. Regarding the serious land...
INTERSEISMIC DEFORMATION ACROSS THE EASTERN ALTYN TAGH FAULT FROM INSAR MEASUREMENTS
InSAR Altyn Tagh fault Interseismic deformation Slip rate
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2018/5/15
As a new type of earth observation technique, InSAR has a lot of advantages, such as all-weather, all-time, high precision, high density, wide coverage and low cost. It has been widely used in deforma...
BASELINE ERROR ANALYSIS AND EXPERIMENTAL VALIDATION FOR HEIGHT MEASUREMENT OF FORMATION INSAR SATELLITE
InSAR Height Measurement Baseline Error DEM Simulation Validation SRTM TerraSAR-X/TanDEM-X
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2018/5/14
In this paper, we proposed the stochastic model of InSAR height measurement by considering the interferometric geometry of InSAR height measurement. The model directly described the relationship betwe...
MASSIVE LINKING OF PS-INSAR DEFORMATIONS TO A NATIONAL AIRBORNE LASER POINT CLOUD
Airborne Laser Scanning PS-InSAR geolocation deformation monitoring local surface reconstruction data fusion
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2018/6/5
Build on soft soil, close to sea level the Netherlands is at high risk for the effects of subsidence and deformation. Interferometric Synthetic Aperture Radar (InSAR) is successfully used to monitor t...
联合强震记录和InSAR/GPS结果的四川九寨沟7.0级地震震源滑动分布反演及其地震学应用
九寨沟地震 同震反演 静态库仑应力变化 强地面运动
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2019/2/27
2017年8月8日我国四川九寨沟发生里氏7.0级地震.本研究利用基线校正方法获得距震中100 km范围内9个强震台站同震位移，基于Sentinel-1卫星干涉SAR影像对获取了InSAR同震形变场.结合GPS形变数据，本研究进行了震源滑动模型联合反演，结果显示此次地震整体以走滑运动为主，释放地震矩约为7.60×1018N·m（~MW6.52）.通过对比模拟形变场和观测值显示，联合反演结果优于单独基...
2008、2009年柴达木盆地地震群InSAR分析及同震形变场反演
柴达木盆地 InSAR形变 滑动反演
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2018/5/17
对发生在青藏高原东北缘-柴达木盆地北缘的4个中等震级地震分别做了研究，其中1个地震发生在2008年，另外3个发生在2009年。利用D-InSAR技术采用Envisat ASAR降轨数据获得了这4个地震的同震形变场。结果显示，2008年地震形变场只有1个形变中心，而2009年地震有3个形变中心。2008、2009年地震引起的卫星视线向最大形变分别为0.097m和0.41m。基于弹性半空间模型和InS...