中国沿海验潮站及其邻近地区陆地垂直运动分析

Land vertical movement analysis of China coastal tidal stations and adjacent areas

中文关键词:  验潮站  GNSS  卫星高度计  陆地垂直运动

英文关键词:tide station  GNSS  satellite altimeter  vertical movement

中文摘要:

      利用中国沿岸验潮站 GNSS 和邻近地区陆态网络 GNSS 基准站观测数据，结合卫星高度计和验潮站海平面观测数据分析了中国沿海验潮站及其邻近地区陆地垂直运动特征。中国沿海海平面观测以及验潮站和陆态网 GNSS 基准站观测结果显示，中国沿海省区市及沿海验潮站陆地垂直运动总体表现为：辽宁至江苏沿海上升、上海至福建泉州沿海沉降、福建厦门至广西沿海升降交替的格局，局部滨海平原地区如华北平原天津南部、河北平原的沧县则表现出显著的沉降特征。验潮站陆地的抬升与沉降是沿海相对海平面变化的重要组成部分，准确掌握验潮站及其邻近区域的陆地垂直运动特征，可为沿海相对海 平面变化分析、海平面变化影响评估以及未来海平面上升预测提供依据。

英文摘要:

      The paper analyzes the characteristics of the vertical movement of the land in the coastal areas of China and its neighboring areas by using the GNSS observation data of the tide gauge at coastal stations of China and the land -based network GNSS reference stations in the neighboring areas, combined with the satellite altimeter and the sea-level observation data of the stations. The results show that the vertical movement of the land in China's coastal provinces and municipalities and coastal tide gauge stations is generally ascending from Liaoning to Jiangsu Province and subsiding from Shanghai to Quanzhou, Xiamen to Guangxi Autonomous Region coastal alternate pattern of elevation, local coastal plain areas such as southern Tianjin in the North China Plain, and Cang County in the Hebei Plain show significant subsidence characteristics. The uplift and subsidence of land at tide gauge stations is an important part of the relative sea level changes along the coast. The accurate characteristics of the vertical movement of land at tide gauge stations and its adjacent areas provides basis for analysis of relative sea level changes along the coast, assessment of sea level change impact and future sea level rise forecast.