DOI: 10.1007/s11069-020-04123-4
论文题名: InSAR observations and analysis of the Medicina Geodetic Observatory and CosmoSkyMed images
作者: Poreh D. ; Pirasteh S.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2020
卷: 103, 期: 3 起始页码: 3145
结束页码: 3161
语种: 英语
中文关键词: 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
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/168681
Appears in Collections: 气候变化与战略
There are no files associated with this item.
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
Recommended Citation:
Poreh D.,Pirasteh S.. InSAR observations and analysis of the Medicina Geodetic Observatory and CosmoSkyMed images[J]. Natural Hazards,2020-01-01,103(3)