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    题名: Investigating Active Deformation in the Northern Longitudinal Valley and City of Hualien in Eastern Taiwan Using Persistent Scatterer and Small-Baseline SAR Interferometry
    作者: Yen,JY;Lu,CH;Chang,CP;Hooper,AJ;Chang,YH;Liang,WT;Chang,TY;Lin,MS;Chen,KS
    贡献者: 太空及遙測研究中心
    关键词: PERMANENT SCATTERERS;SURFACE DEFORMATION;EARTHQUAKE;FAULT;ALGORITHM
    日期: 2011
    上传时间: 2012-03-27 17:49:35 (UTC+8)
    出版者: 國立中央大學
    摘要: Rapid convergence between the Eurasian plate and the Philippine Sea plate in the northern Longitudinal Valley near the city of Hualien in eastern Taiwan has produced prominent fault scarps and large earthquakes (M 7). This study attempts to more thoroughly understand the surface deformation activities near the faults and their relation to earthquakes near Hualien City using a stable target, multi-temporal radar interferometry method to extract the surface deformation information in this area. Our results indicate that the extracted deformation signals were comparable with those in our leveling data and have a very high spatial density (exceeding 70 point km(-2)). Additionally, all faults in the northern Longitudinal Valley and Hualien City were not deformed monotonically. Rather, deformation time series are complex and frequent activities affected the general trends wherein, for example, 2005 earthquake swarm produced more than 10 mm of displacement near the Milun fault. Moreover, deformation rates in the study area generally ranged from around 10 - 20 mm yr(-1) of relative displacement rates along the radar line of sight between the western part of Hualien City near the Central Range and the eastern part during the decade, while only the Mingyi fault displayed monotonic fault activities with change of displacement rates of approximately 5 - 10 mm yr(-1) across the fault.
    關聯: TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES
    显示于类别:[太空及遙測研究中心] 期刊論文

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