摘要
利用完备经验模态分解方法(CEEMD)对我国沿海地区6个GNSS基准站(2010-2018)的高程时序数据进行了处理分析。结果表明:CEEMD在高程时间序列分析中具有一定的优越性,可准确分解出各GNSS站高程时序中存在的周、月、季节、年等变化周期项,其中周年运动是主要贡献项,各站高程时间序列的短周期变化与潮汐变化周期具有密切关联性;沿海GNSS站的地面沉降既具有区域的一致性,又存在区域间差异性,其中D区DBJO、DZJJ站呈现先下降后上升的趋势,N区NZUH、NWZU站呈下降趋势,B区的BZMW呈上升趋势,而同海区的BLHT站则呈显著的下降趋势。
The height time series data of six GNSS reference stations(2010-2018) in coastal areas of China are processed and analyzed by using the complete empirical mode decomposition method(CEEMD). The results show that: CEEMD has certain advantages in the analysis of height time series,which can accurately decompose the period of the week,month,season and year in the height timing of each GNSS station,and the annual movement is the main contribution,the short-period change of the height time series of each station is closely related to the tidal change cycle. The ground subsidence of coastal GNSS stations has both regional consistency and inter-regional differences,the DBJO and DZJJ stations in the East China Sea showed a trend of decreasing first and then rising,the NZUH and NWZU stations in South China Sea District showed a downward trend,and the BZMW in the Bohai Sea area showed an upward trend,while the BLHT stations in the same area showed a significant downward trend.
作者
刘豪
周东旭
王盼龙
张化疑
王永康
姜传苓
LIU Hao;ZHOU Dongxu;WANG Panlong;ZHANG Huayi;WANG Yongkang;JIANG Chuanling(Nanjing University,Nanjing 210023,China;The First Institute of Oceanography,Ministry of Natural Resources,Qingdao 266061,China;Geodetic Data Processing Centre of Ministry of Natural Resources,Xi*an 710000,China;Shandong University of Science and Technology,Qingdao 266510,China)
出处
《测绘通报》
CSCD
北大核心
2020年第3期39-43,77,共6页
Bulletin of Surveying and Mapping
基金
国家自然科学基金青年基金(41706115)
GNSS业务化运行(FZ1019005)。
