气候变化领域集成服务门户(CCPortal): InSAR observations and analysis of the Medicina Geodetic Observatory and CosmoSkyMed images

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DOI	10.1007/s11069-020-04123-4
	InSAR observations and analysis of the Medicina Geodetic Observatory and CosmoSkyMed images
	Poreh D.; Pirasteh S.
发表日期	2020
ISSN	0921030X
起始页码	3145
结束页码	3161
卷号	103 期号:3
英文摘要	We have observed some discrepancies between installed geodetic instruments including global positioning systems (GPS) and very long baseline interferometry (VLBI) in the Medicina Geodetic Observatory (MGO). This study overcomes the above-mentioned discrepancies. We analysed several CosmoSkyMed images utilizing the interferometric synthetic aperture radar (InSAR) technique to improve the understanding of 3D surface displacements. The MGO is in a rural area, and the radar coherence is low; therefore, the coverage of permanent scatterers (PS) is limited. In ascending mode, the closest scatterer to the MEDI GPS station shows that the surface displacements are as large as 0.72 ± 1.45 mm/year along the line of sight (LOS) direction. The GPS height projected on the LOS vector shows a rate of 0.92 ± 0.04 mm/year of displacements. In descending mode, the closest scatterer to MEDI shows that the displacement is at a rate of − 0.1 ± 0.51 mm/year along the LOS direction, and the MEDI projected on the LOS vector is at a rate of 0.91 ± 0.002 mm/year. In this study, the deformation rates and their standard deviations stress that the GPS and PS-InSAR have different values. Despite a large (32-m-diameter parabolic antenna) VLBI telescope, we do not observe a single PS on the telescope for ascending and descending passes due to the frequent movements of the VLBI telescope in different directions. © 2020, Springer Nature B.V.
关键词	GPS Interferometric synthetic aperture radar (InSAR)Medicina PS Subsidence
英文关键词	deformation; geodetic network; GPS; satellite data; satellite imagery; standardization; synthetic aperture radar
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/205882
作者单位	Dipartimento di Ingegneria Elettrica edelle Tecnologie dell’Informazione, Universita degli Studi di, Napoli Federico II, Via Claudio, 21, Naples, D.P. 80125, Italy; Department of Surveying and Geoinformatics, Faculty of Geosciences and Environmental Engineering (FGEE), Southwest Jiaotong University, Chengdu, S.P. 611756, China
推荐引用方式 GB/T 7714	Poreh D.,Pirasteh S.. InSAR observations and analysis of the Medicina Geodetic Observatory and CosmoSkyMed images[J],2020,103(3).
APA	Poreh D.,&Pirasteh S..(2020).InSAR observations and analysis of the Medicina Geodetic Observatory and CosmoSkyMed images.Natural Hazards,103(3).
MLA	Poreh D.,et al."InSAR observations and analysis of the Medicina Geodetic Observatory and CosmoSkyMed images".Natural Hazards 103.3(2020).