气候变化领域集成服务门户(CCPortal): Ocean Tide Loading Effects on InSAR Observations Over Wide Regions

CCPortal

DOI	10.1029/2020GL088184
	Ocean Tide Loading Effects on InSAR Observations Over Wide Regions
	Yu C.; Penna N.T.; Li Z.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:15
英文摘要	Recent and future Interferometric Synthetic Aperture Radar (InSAR) missions provide spatially wide and temporally continuous observations capturing relative ground motions over great distances which enable nationwide or continent-wide deformation mapping. To achieve this, long wavelength errors, which increase with distance and are coupled with geophysical deformation, must be corrected. We predict the ocean tide loading (OTL) effect on Sentinel-1 interferograms globally for all ascending and descending acquisitions, and they are largest in coastal regions. Then, interferograms over southwest Britain are investigated, with the OTL correction having a similar noise reduction effect as when correcting for tropospheric delay (27% standard deviation reduction for tropospheric delay and 46% for combined tropospheric delay and OTL). OTL corrections contribute considerably to the noise reduction of the InSAR time series, with the time series standard deviation reducing by 33% after correcting tropospheric errors and 52% after also applying OTL corrections. © 2020. The Authors.
英文关键词	Deformation; Interferometry; Noise abatement; Time series; Troposphere; Continuous observation; Deformation mapping; Interferometric synthetic aperture radars; Long wavelength errors; Noise reduction effect; Standard deviation; Tropospheric delays; Tropospheric error; Synthetic aperture radar; coastal zone; error analysis; geophysical survey; ocean tide; satellite altimetry; Sentinel; signal-to-noise ratio; synthetic aperture radar; time series analysis; topography; wavelength; United Kingdom
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169990
作者单位	School of Engineering, Newcastle University, Newcastle upon Tyne, United Kingdom
推荐引用方式 GB/T 7714	Yu C.,Penna N.T.,Li Z.. Ocean Tide Loading Effects on InSAR Observations Over Wide Regions[J],2020,47(15).
APA	Yu C.,Penna N.T.,&Li Z..(2020).Ocean Tide Loading Effects on InSAR Observations Over Wide Regions.Geophysical Research Letters,47(15).
MLA	Yu C.,et al."Ocean Tide Loading Effects on InSAR Observations Over Wide Regions".Geophysical Research Letters 47.15(2020).