吴啸龙, 杨志强, 龚云. 欧亚大陆东南缘弧-陆碰撞带现今地壳水平变形特征研究[J]. 武汉大学学报 ( 信息科学版), 2019, 44(2): 240-245, 253. DOI: 10.13203/j.whugis20170081
引用本文: 吴啸龙, 杨志强, 龚云. 欧亚大陆东南缘弧-陆碰撞带现今地壳水平变形特征研究[J]. 武汉大学学报 ( 信息科学版), 2019, 44(2): 240-245, 253. DOI: 10.13203/j.whugis20170081
WU Xiaolong, YANG Zhiqiang, GONG Yun. Present-day Crustal Deformation in Arc-Continent Collision Zone of the Southeastern Eurasia Plate[J]. Geomatics and Information Science of Wuhan University, 2019, 44(2): 240-245, 253. DOI: 10.13203/j.whugis20170081
Citation: WU Xiaolong, YANG Zhiqiang, GONG Yun. Present-day Crustal Deformation in Arc-Continent Collision Zone of the Southeastern Eurasia Plate[J]. Geomatics and Information Science of Wuhan University, 2019, 44(2): 240-245, 253. DOI: 10.13203/j.whugis20170081

欧亚大陆东南缘弧-陆碰撞带现今地壳水平变形特征研究

Present-day Crustal Deformation in Arc-Continent Collision Zone of the Southeastern Eurasia Plate

  • 摘要: 在收集中国福建省、台湾省及菲律宾吕宋岛现有GPS观测成果的基础上,统一归算了欧亚大陆东南缘弧-陆碰撞带现今地壳水平运动速度场。针对该区域超过1 000 km的超长跨度,建立了基于椭球坐标的最小二乘配置模型,计算了弧-陆碰撞带GPS应变分布。结果显示,研究区域地壳变形在中国台湾岛最强,菲律宾吕宋次之,中国福建省最弱。菲律宾海板块在中国台湾岛东侧与欧亚大陆被动型大陆边缘的陆缘构造楔强烈碰撞,在台湾岛内通过中央山脉的隆起、逆冲推覆以及西南部地壳的构造逃逸等形式被剧烈消耗。中国台湾地壳变形特征与中国台湾东侧菲律宾海板块的构造形态变化密切相关,而菲律宾吕宋的地壳形变则以菲律宾大断裂及其分支构造的相对滑动为主。

     

    Abstract: Based on the systematic collection of the GPS observations in China:Fujian, China:Taiwan and Philippine:Luzon, this paper obtains the current crustal horizontal velocity field of the arc-continent collision zone. Targeting the specific areas whose super-long span is more than 1000 km, this paper builds the least squares collocation model on the basis of ellipsoidal coordinates, uniformly calculating current GPS strain distribution of this collision zone. The results show that china:Taiwan province has the strongest crustal deformation, followed by Philippine:Luzon and China:Fujian regions respectively. The Philippine sea plate at the east Taiwan, China collides intensively with the Eurasia plate, and the collision is severely consumed through the central mountain's uplifting, the thrust napping and the tectonic escaping. The overall deformation characteristics is closely related to the structural variation of the Philippine sea plate. While the relative deformation in Luzon region is mainly involved with the relative sliding of the Philippine fault.

     

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