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Tytuł pozycji:

Nationwide urban ground deformation monitoring in Japan using Sentinel-1 LiCSAR products and LiCSBAS

Tytuł :
Nationwide urban ground deformation monitoring in Japan using Sentinel-1 LiCSAR products and LiCSBAS
Autorzy :
Yu Morishita
Pokaż więcej
Temat :
Automatic processing
Ground deformation
InSAR
Nationwide
Sentinel-1
Subsidence
Geography. Anthropology. Recreation
Geology
QE1-996.5
Źródło :
Progress in Earth and Planetary Science, Vol 8, Iss 1, Pp 1-23 (2021)
Wydawca :
SpringerOpen, 2021.
Rok publikacji :
2021
Kolekcja :
LCC:Geography. Anthropology. Recreation
LCC:Geology
Typ dokumentu :
article
Opis pliku :
electronic resource
Język :
English
ISSN :
2197-4284
Relacje :
https://doaj.org/toc/2197-4284
DOI :
10.1186/s40645-020-00402-7
Dostęp URL :
https://doaj.org/article/c99a9dc4b96945a791007fd973a23e9a
Numer akcesji :
edsdoj.99a9dc4b96945a791007fd973a23e9a
Czasopismo naukowe
Abstract Ground subsidence in urban areas is a significant problem because it increases flood risk, damages buildings and infrastructure, and results in economic loss. Continual monitoring of ground deformation is important for early detection, mechanism understanding, countermeasure implementation, and deformation prediction. The Sentinel-1 satellite constellation has globally and freely provided frequent and abundant SAR data and enabled nationwide deformation monitoring through InSAR time series analysis. LiCSAR, an automatic Sentinel-1 interferometric processing system, has produced abundant interferograms with global coverage, and the products are freely accessible and downloadable through a web portal. LiCSBAS, an open source InSAR time series analysis package integrated with LiCSAR, enables users to obtain the deformation time series easily and quickly. In this study, spatially and temporally detailed deformation time series and velocities from the LiCSAR products using LiCSBAS for 73 major urban areas in Japan during 2014–2020 were derived. All LiCSBAS processing was automatically performed using predefined parameters. Many deformation signals with various temporal and spatial features, such as linear subsidence in Hirosaki, Kujyukuri, Niigata, and Kanazawa, episodic subsidence in Sanjo, annual vertical fluctuation in Hirosaki, Yamagata, Yonezawa, Ojiya, and Nogi, and linear uplift in Chofu were detected. Unknown small nonlinear uplift signals were found in Nara and Osaka in 2018. Complex postseismic deformations from the 2016 Kumamoto earthquake were also revealed. All the deformation data obtained in this study are available on an open repository and are expected to be used for further research, investigation, or interpretation. This nationwide monitoring approach using the LiCSAR products and LiCSBAS is easy to implement and applicable to other areas worldwide.

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