Abstract: Annual average long-term rates of relative sea level changes are computed using tide records of 48 stations along the Chinese coast. Through modification by the factors of global climate sea level changes, modern crustal deformation rates of the Chinese coast are estimated. The analyses show that the section and profile maps of China coast tectonic deformation are consistent with the coast tectonic pattern: the northern coast is characterized by large area rise-drop zones with obvious boundaries, showing effects of large scale crustal movement; the southern coast is complicated, with differential rise-fall, showing dominant rise and local subsidence. Active faults pass through the rise-fall boundaries. These locations are close to offshore areas of high seismicity.

Key words: Chinese coast, Tide records, Sea level, Tectonic deformation

摘要： 依据48个验潮站记录,计算出相对海平面年均值长期变化速率,经全球气候型海平面变化因子校正,获得了中国海岸现代地壳构造变形速率。分析结果表明,中国海岸构造变形的平面和纵断面图象与海岸构造格局一致:北方海岸大面积升降区比较完整,分界明显,表现出大范围块体运动特征;南方海岸比较复杂,升降差异变化快,呈现以上升为主、局部下沉的特征。在升降差异分界地区均有活动断裂通过,这些地区也是近海地震活动强烈地区。

关键词: 中国海岸, 验潮记录, 海平面, 构造变形