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    3852 research outputs found

    海峡両岸・曾虛白(主編)『中國新聞史』について

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    departmental bulletin pape

    A Study on Copyright Infringement by Generative AI — the Liability of Infringing Parties and Service Providers in Japan: Insights from Chinese Case Law —

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    departmental bulletin pape

    アンボンドプレキャストPC部材の耐力と応力状態に関する研究

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    日本大学博士(工学)doctoral thesi

    Immunohistochemical Localization of YAP and TAZ in Mouse Parotid Gland Morphogenesis

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    日本大学博士(歯学)doctoral thesi

    共生のための日本語教育研究-教室と社会をつなぎ、共に学ぶ場を創る実践研究-

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    日本大学博士(総合社会文化)doctoral thesi

    The Fundamental Study on Detecting Subtle Creep Deformation Using Time-Series InSAR Analysis: A Case Study of the Longitudinal Valley Fault in Taiwan

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    This study applies time-series interferometric synthetic aperture radar (InSAR) analysis using ALOS-2/PALSAR-2 data to investigate the spatial distribution of interseismic displacement velocity along the central segment of the Longitu dinal Valley Fault (LVF) near Yuli, Taiwan. The LVF is defined as a major tectonic boundary characterized by significant seismic and aseismic creep activities that influence regional ground deformation. Recent studies have documented surface creep with rates of up to 30 mm per year, confirmed by GPS, precise leveling, and creep meters. However, conventional geodetic methods lack the method ological and spatial resolution necessary to detect broad deformation patterns along the fault comprehensively. To improve this limitation, we conducted time-series InSAR analysis applying techniques such as differential InSAR and stacking to achieve detailed spatial and temporal detection of minor creep displacements across the LVF. The accura cy of displacement detections was evaluated by comparison with high precision leveling data. The results of this study are summarized as follows. 1) The time-series InSAR analysis revealed an average creep displacement of approximately 100 mm along the LVF over 4 years and 10 months (1764 days), with maximum uplift reaching 130 mm on the eastern side of the fault near the Yuli area. 2) Minor creep deformation was detected in areas outside the vicinity of the known fault trace, suggesting the potential for new insights through continued investigation of these variations. 3) A positive correlation between the time-series InSAR results and leveling data highlights the accuracy of the InSAR analysis in capturing subtle deformation trends and its potential for high-precision creep detection. 4) To enhance the detection accuracy of vertical displacement, advanced analytical methods such as 2.5-dimensional analysis utilizing observations from different satellite line-of-sight (LOS) directions are required.departmental bulletin pape

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