World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

A Clustering Analysis of Eddies' Spatial Distribution in the South China Sea : Volume 9, Issue 1 (22/02/2013)

By Yi, J.

Click here to view

Book Id: WPLBN0004020637
Format Type: PDF Article :
File Size: Pages 12
Reproduction Date: 2015

Title: A Clustering Analysis of Eddies' Spatial Distribution in the South China Sea : Volume 9, Issue 1 (22/02/2013)  
Author: Yi, J.
Volume: Vol. 9, Issue 1
Language: English
Subject: Science, Ocean, Science
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2013
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

APA MLA Chicago

He, Z., Du, Y., Zhou, C., Wang, X., & Yi, J. (2013). A Clustering Analysis of Eddies' Spatial Distribution in the South China Sea : Volume 9, Issue 1 (22/02/2013). Retrieved from http://worldlibrary.net/


Description
Description: State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Science and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China. Spatial variation is important for studying the mesoscale eddies in the South China Sea (SCS). To investigate such spatial variations, this study made a clustering analysis on eddies' distribution using the K-means approach. Results showed that clustering tendency of anticyclonic eddies (AEs) and cyclonic eddies (CEs) were weak but not random, and the number of clusters were proved greater than four. Finer clustering results showed 10 regions where AEs densely populated and 6 regions for CEs in the SCS. Previous studies confirmed these partitions and possible generation mechanisms were related. Comparisons between AEs and CEs revealed that patterns of AE are relatively more aggregated than those of CE, and specific distinctions were summarized: (1) to the southwest of Luzon Island, AEs and CEs are generated spatially apart; AEs are likely located north of 14° N and closer to shore, while CEs are to the south and further offshore. (2) The central SCS and Nansha Trough are mostly dominated by AEs. (3) Along 112° E, clusters of AEs and CEs are located sequentially apart, and the pairs off Vietnam represent the dipole structures. (4) To the southwest of the Dongsha Islands, AEs are concentrated to the east of CEs. Overlaps of AEs and CEs in the northeastern and southern SCS were further examined considering seasonal variations. The northeastern overlap represented near-concentric distributions while the southern one was a mixed effect of seasonal variations, complex circulations and topography influences.

Summary
A clustering analysis of eddies' spatial distribution in the South China Sea

Excerpt
Banerjee, A. and Dave, R. N.: Validating clusters using the hopkins statistic, IEEE International Conference on Fuzzy Systems (FUZZ-IEEE 2004), Budapest (Hungary), 149–153, 2004.; Brown, M. B. and Forsythe, A. B.: Robust Tests for the Equality of Variances, J. Am. Stat. Assoc., 69, 364–367, doi:10.1080/01621459.1974.10482955, 1974.; Cai, S., Su, J., Gan, Z., and Liu, Q.: The numerical study of the South China Sea upper circulation characteristics and its dynamic mechanism, in winter, Cont. Shelf Res., 22, 2247–2264, doi:10.1016/s0278-4343(02)00073-0, 2002a.; Cai, S., Su, J., Gan, Z., and Liu, Q.: The numerical study of the dynamic mechanism of the South China Sea upper circulation in summer, Acta Oceanol. Sinica, 24, 1–7, 2002b (in Chinese).; Chai, F., Xue, H., and Shi, M.: Hydrographic characteristics and seasonal variation of three anticyclonic eddies on the northern continental shelf of the South China Sea, in: Oceanography in China, 13, edited by: Xue, H., Chai, F., and Xu, J, Ocean Press, Beijing, 2001 (in Chinese).; Chelton, D. B., Schlax, M. G., and Samelson, R. M.: Global observations of nonlinear mesoscale eddies, Prog. Oceanogr., 91, 167–216, doi:10.1016/j.pocean.2011.01.002, 2011.; Chen, G., Hou, Y., and Chu, X.: Mesoscale eddies in the South China Sea: Mean properties, spatiotemporal variability, and impact on thermohaline structure, J. Geophys. Res., 116, C06018, doi:10.1029/2010jc006716, 2011.; Cheng, X., Qi, Y. Q., and Wang, W. Q.: Seasonal and interannual variabilities of mesoscale eddies in the South China Sea, J. Trop. Oceanogr., 24, 51–59, 2005 (in Chinese).; Kaufman, L. and Rousseeuw, P. J.: Finding Groups in Data: An Introduction to Cluster Analysis, John Wiley, 1990.; Du, Y., Fan, X., He, Z., Su, F., Zhou, C., Mao, H., and Wang, D.: Extraction of spatial-temporal rules from mesoscale eddies in the South China Sea based on rough set theory, Ocean Sci., 7, 835–849, doi:10.5194/os-7-835-2011, 2011.; Fang, W., Guo, X., and Huang, Y. : Observation and study on the circulation in the southern South China Sea, Chinese Sci. Bull., 42, 2261–2271, 1997 (in Chinese).; Fang, G., Fang, W., Fang, Y., and Wang, K.: A survey of studies on the South China Sea upper circulation, Acta Oceanogr. Taiwanica, 37, 1–16, 1998.; Fang, W., Fang, G., Shi, P., Huang, Q., and Xie, Q.: Seasonal structures of upper layer circulation in the southern South China Sea from in situ observations, J. Geophys. Res., 107, 3202, doi:10.1029/2002jc001343, 2002.; Guan, B.: Warm eddy in the open sea east of Hainan Island, J. Oceanogr. Huanghai Bohai S., 4, 1–7, 1997 (in Chinese).; Guan, B. and Yuan, Y. C.: Overview of studies on some eddies in the China seas and their adjacent seas, the South China Sea and the region east of Taiwan, Acta Oceanol. Sinica, 28, 1–16, 2006 (in Chinese).; Hellerman, S. and Rosenstein, M.: Normal Monthly Wind Stress Over the World Ocean with Error Estimates, J. Phys. Oceanogr., 13, 1093–1104, 2.0.co;2>doi:10.1175/1520-0485(1983)013<1093:nmwsot>2.0.co;2, 1983.; Huang, Q., Wang, W. Z., Li,Y. X., Li, Z. W. and Mao, M.: General situations of the current and eddy in the South China Sea, Adv. Earth Sci., 7, 1–9, 1992 (in Chinese).; Hwang, C. and Chen, S.-A.: Circulations and eddies over the South China Sea derived from TOPEX/Poseidon altimetry, J. Geophys. Res., 105, 23943–23965, doi:10.1029/2000jc900092, 2000.; Jain, A. K. and Dubes, R. C.: Algorithms for clustering data, Pr

 

Click To View

Additional Books


  • A Simple and Self-consistent Geostrophic... (by )
  • Surface Expression of Mediterranean Wate... (by )
  • Assessment of an Ensemble System That As... (by )
  • Self-organizing Maps Approaches to Analy... (by )
  • Integration of a Relocatable Ocean Model... (by )
  • Density and Absolute Salinity of the Bal... (by )
  • Assessment of the Representation of Anta... (by )
  • Statistical Trend Analysis and Extreme D... (by )
  • Imbalance of Energy and Momentum Source ... (by )
  • Coastal Upwelling Along the Southwest Co... (by )
  • Assessment of the Impact of Ts Assimilat... (by )
  • High Frequency Variability of the Atlant... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from World Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.