西北太平洋区域海面变化——过程、特征与预测(英文)

编号 zgly0001585525

文献类型 期刊论文

文献题名 西北太平洋区域海面变化——过程、特征与预测(英文)

作者 罗文  袁林旺  俞肇元  易琳  谢志仁 

作者单位 KeyLaboratoryofVirtualGeographicEnvironment  MinistryofEducation  NanjingNormalUniversity 

母体文献 Journal of Geographical Sciences 

年卷期 2011年03期

年份 2011 

分类号 P731.23 

关键词 regionalsealevelchange  spatial-temporalvariation  MTM  prediction  NorthwestPacific 

文摘内容 Based on 22 sparse-distributed tide gauge records in the Northwest Pacific Ocean marginal sea, the process, characteristic and prediction of regional sea level change are discussed by the integration of the following methods. Firstly, the regularized EM algorithm (RegEM) and the Multi-taper Spectral Method (MTM) are adopted to interpret their multiscale fluctuation processes and their spatial-temporal variations. Secondly, the orderly cluster method is introduced to classify these tidal stations, and with the consideration of the space adjacent relation, we obtain five sub-regions (the coasts of Bohai Sea-northern Yellow Sea, Yellow Sea-East China Sea along Chinese coast, the East China Sea along Japanese coast, the southern East China Sea and the northwestern South China Sea). Furthermore, the Mean Generation Function (MGF) is explored to predict the medium- and long-term trends of each tide station. Finally, the Principal Component Analysis (PCA) is employed to obtain re-gional-scale sea level change trends, sea level rise rates of the above five sub-regions from 2001 to 2030 are 1.23-1.27 mm/a, 3.30-3.34 mm/a, 2.72-2.76 mm/a, 1.43-1.47 mm/a and 1.13-1.15 mm/a respectively, and the whole region sea level rise rate is between 2.01 mm/a and 2.11 mm/a. The aim of our work is to conduct an integrated research on regional sea level change.