Marine hydrology

Analysis of wave characteristics in the Pacific Ocean during the last 45 years

  • ZHENG Chong-wei ,
  • LIN Gang ,
  • SUN Yan ,
  • YANG Song
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  • 1. State Key Laboratory of Structural Analysis of Industrial Equipments, Department of Engineering Mechanics,Dalian University of Technology, Dalian 116085, China; 2. Meteorological Unit, No. 92538 Army of People's Liberation Army, Dalian 116041, China; 3. Liaoning Electric Power Company Limited Economic Research Institute, Shenyang 110015, China; 4. Dalian Ocean University, School of Information Engineering, Dalian 116023, China

Received date: 2011-03-21

  Revised date: 2011-06-22

  Online published: 2013-02-06

Abstract

In this paper, the ERA-40 wave data from the European Centre for Medium-Range Weather Forecasts (ECMWF) was used to analyze the characteristics of sea surface wind, wind wave, swell wave, and overall wave fields in the Pacific Ocean. The main findings are as follows. The swell wave height and significant wave height had an obvious increasing tendency from 1958 to 2001, of about 0.3-0.6 cm?a?1 and 0.3-1.2 cm?a?1, respectively, and the swell wave was the dominant one. There was a notable swell pool in the East Pacific Ocean near the equator. The relationship between wind field and wave field in the North Pacific Ocean was more correlated than that in the South Pacific Ocean. The relationship between wind field and swell field was, however, more correlated in the South Pacific Ocean. In addition, a close relationship between wave field and Nino3 index in the Pacific Ocean was found.

Cite this article

ZHENG Chong-wei , LIN Gang , SUN Yan , YANG Song . Analysis of wave characteristics in the Pacific Ocean during the last 45 years[J]. Journal of Tropical Oceanography, 2012 , 31(6) : 6 -12 . DOI: 10.11978/j.issn.1009-5470.2012.06.002

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