Interseismic crustal deformation in and around the Atotsugawa fault system, central Japan, detected by InSAR and GNSS

• Material Type: 記事
• Title: Interseismic crustal deformation in and around the Atotsugawa fault system, central Japan, detected by InSAR and GNSS
• Author/Editor: Youichiro Takada; Takeshi Sagiya; Takuya Nishimura
• Publication, Distribution, etc.: 日本 : Springer Nature
• Publication Date: 2018-02-16
• Publication Date (W3CDTF): 2018-02-16
• Periodical title: EPS : Earth, Planets and Space
• No. or year of volume/issue: 70(32)
• Volume: 70(32)
• ISSN (Periodical Title): 1880-5981
• ISSN-L (Periodical Title): 1343-8832
• Text Language Code: eng
• DOI: 10.1186/s40623-018-0801-0; https://doi.org/10.1186/s40623-018-0801-0
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• Date Accepted (W3CDTF): 2018-04-12T16:47:48+09:00
• Date Captured (W3CDTF): 2018-04-12
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• Periodical Title (URI): https://earth-planets-space.springeropen.com/articles
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• Related Material (URI): http://dl.ndl.go.jp/info:ndljp/pid/3515579
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• Bibliographic ID (NDL): 11067489; http://id.ndl.go.jp/bib/11067489
• Bibliographic Record Category (NDL): 632

• Summary, etc.: The Atotsugawa fault system is one of the best-known active faults in Japan. However, revealing the interseismic velocity field in and around the Atotsugawa fault system with high spatial resolution is challenging because of dense vegetation, steep topography, and heavy snowfall in winter. To overcome these difficulties, we combined ALOS/PALSAR data and GNSS data from our original stations in addition to the nationwide station network (GEONET). First, we removed the height-dependent phase change in each interferogram using a digital elevation model. Next, we removed the long-wavelength phase trend using the GNSS velocity field. Finally, we applied an InSAR time-series analysis, known as small baseline subset analysis (SBAS), to all the corrected interferograms. The resultant mean velocity field shows a remarkable phase gradient around the Atostugawa fault system. We found a sharp velocity gradient across the Ushikubi fault, a major strand of the Atotsugawa faults system, rather than the main trace of the Atotsugawa fault. Using InSAR, we found that the interseismic deformation inside the strain concentration zone is spatially heterogeneous and different from what we expect from the fault traces.
• DOI: 10.1186/s40623-018-0801-0; https://doi.org/10.1186/s40623-018-0801-0
• Access Restrictions: インターネット公開
• Rights (production): © The Author(s) 2018. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
• Related Material (URI): http://hdl.handle.net/2433/234226; https://hdl.handle.net/2115/68823; http://id.ndl.go.jp/digimeta/11067489; https://dl.ndl.go.jp/pid/11067489; http://link.springer.com/article/10.1186/s40623-018-0801-0/fulltext.html; http://link.springer.com/content/pdf/10.1186/s40623-018-0801-0.pdf; http://hdl.handle.net/2115/68823
• Is Referenced By: Surface creep rate distribution along the Philippine fault, Leyte Island, and possible repeating of Mw ~ 6.5 earthquakes on an isolated locked patch; https://cir.nii.ac.jp/crid/1050003824911645696; Crustal dynamics: unified understanding of geodynamic processes at different time and length scales; https://cir.nii.ac.jp/crid/1050564285813661696; 干渉SAR時系列解析手法を用いた御前崎周辺の定常的な地殻変動; https://cir.nii.ac.jp/crid/1390298355913546496; 関東地域の地殻内応力マップの作成; https://cir.nii.ac.jp/crid/1390564238105182848; Surface displacement revealed by L-band InSAR analysis in the Mayya area, Central Yakutia, underlain by continuous permafrost; https://cir.nii.ac.jp/crid/2051996266981883776
• References: The displacement field of the Landers earthquake mapped by radar interferometry; https://cir.nii.ac.jp/crid/1360011144185767680; Long-term growth of the Himalaya inferred from interseismic InSAR measurement; https://cir.nii.ac.jp/crid/1360011146189151872; Continuous GPS Array and Present-day Crustal Deformation of Japan; https://cir.nii.ac.jp/crid/1360013170949096064; New, improved version of generic mapping tools released; https://cir.nii.ac.jp/crid/1360292617909532032; Persistent inelastic deformation in central Japan revealed by GPS observation before and after the Tohoku-oki earthquake; https://cir.nii.ac.jp/crid/1360567182088900992; Stress accumulation process in and around the Atotsugawa fault, central Japan, estimated from focal mechanism analysis; https://cir.nii.ac.jp/crid/1360567182476884224; Permanent scatterers in SAR interferometry; https://cir.nii.ac.jp/crid/1360574095385913600; Fifteen years of surface deformation in Western Taiwan: Insight from SAR interferometry; https://cir.nii.ac.jp/crid/1361137044823299968; Dense GPS Array observations across the Atotsugawa fault, central Japan; https://cir.nii.ac.jp/crid/1361418521088921472; Interseismic strain accumulation and the earthquake potential on the southern San Andreas fault system; https://cir.nii.ac.jp/crid/1361699995306843264; Contemporary uplift of the Sierra Nevada, western United States, from GPS and InSAR measurements; https://cir.nii.ac.jp/crid/1361981471174188544; A new algorithm for surface deformation monitoring based on small baseline differential SAR interferograms; https://cir.nii.ac.jp/crid/1362825896348354304; Time‐dependent land uplift and subsidence in the Santa Clara valley, California, from a large interferometric synthetic aperture radar data set; https://cir.nii.ac.jp/crid/1363670319358843520; Strain accumulation process around the Atotsugawa fault system in the Niigata-Kobe Tectonic Zone, central Japan; https://cir.nii.ac.jp/crid/1363670320220357120; Focal mechanisms and stress field in the Atotsugawa fault area, central Honshu, Japan; https://cir.nii.ac.jp/crid/2051714792045115648
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• Bibliographic ID (NDL): 11067489; http://id.ndl.go.jp/bib/11067489
• NAID: 120006454488; 120006517787