文献类型：期刊文献

英文题名：Cruise Observation of Rossby Waves with Finite Wavelengths Propagating from the Pacific to the South China Sea

作者：Xie, Lingling[1,2];Zheng, Quanan[2];Tian, Jiwei[3];Zhang, Shuwen[1];Feng, Ying[4];Yi, Xiaofei[1]

机构：[1]Guangdong Ocean Univ, Guangdong Key Lab Coastal Ocean Variabil & Disast, Zhanjiang, Peoples R China;[2]Univ Maryland, Dept Atmospher & Ocean Sci, 2421 Comp & Space Sci Bldg, College Pk, MD 20742 USA;[3]Ocean Univ China, Phys Oceanog Lab, Qingdao, Peoples R China;[4]Xiamen Univ, Coll Ocean & Earth Sci, State Key Lab Marine Environm Sci, Xiamen, Peoples R China

年份：2016

卷号：46

期号：10

起止页码：2897

外文期刊名：JOURNAL OF PHYSICAL OCEANOGRAPHY

收录：SCI-EXPANDED(收录号：WOS:000384025700001)、、EI(收录号：20164502989035)、Scopus(收录号：2-s2.0-84994092785)、WOS

基金：The satellite altimeter data for this paper are downloaded from Archiving, Validation, and Interpretation of Satellite Oceanographic Data (AVISO) and the Centre National d'Etudes Spatiales (CNES) of France (http://www.aviso.altimetry.fr/en/data/products/sea-surface-height-products/ global.html). This research is supported by the National Science Foundation of China (41476009, 41106012), the National Key Basic Research Program of China (2014CB745003), and the National Program on Global Change and Air-Sea Interaction (GASI-IPOVAI-01-02, GASI-IPOVAI-04). We appreciate anonymous reviewers for the comments and suggestions that were significant for improving the paper.

语种：英文

外文关键词：Empirical mode decomposition - Mechanical waves - Aneroid altimeters - Flow velocity - Physical properties - Potential energy

外文摘要：This study deals with the physical properties and 3D structures of the wave motions with finite wavelengths of O(100-550) km in the tropical western North Pacific and their variation as propagating from the Pacific to the South China Sea (SCS) using conductivity-temperature-depth observations taken in October and November 2005 and concurrent satellite altimeter data. Three wave components with wavelength bands of O(100), O(200), and O(550) km are derived from the isopycnal undulation signals along 218, 188, and 158N using the ensemble empirical mode decomposition analysis. Their maximum amplitudes are over 100 min the layer of 1000-2000 m. Phase speeds are derived from cruise-observed vertical profiles of zonal-mean geostrophic flow velocity and the Brunt-Vaisala frequency based on linear quasigeostrophic wave theory with background flow and topography. The speeds are also derived from concurrent sea level anomaly data with the objective Radon transform method. They are close to that of the first baroclinic mode of theoretical solutions, implying that the observed wave motions possess the physical properties of Rossby waves (RWs). The vertical structures of the first generalized modes are derived from cruise observations at three sections. It is shown that the RWs continuously propagate from the Pacific to the SCS, and the available potential energy of RWs 1 and 2 intensify 3-4 times in the Luzon Strait and the SCS compared to that in the Pacific.