The comprehensive analysis of sea-level change in the East China Sea

Wang Long; Wang Jing; Yang Jungang

doi:10.3969/j.issn.0253-4193.2014.01.004

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Wang Long, Wang Jing, Yang Jungang. The comprehensive analysis of sea-level change in the East China Sea[J]. Haiyang Xuebao, 2014, 36(1): 28-37. doi: 10.3969/j.issn.0253-4193.2014.01.004

Citation:

Wang Long, Wang Jing, Yang Jungang. The comprehensive analysis of sea-level change in the East China Sea[J]. Haiyang Xuebao, 2014, 36(1): 28-37. doi: 10.3969/j.issn.0253-4193.2014.01.004

Wang Long, Wang Jing, Yang Jungang. The comprehensive analysis of sea-level change in the East China Sea[J]. Haiyang Xuebao, 2014, 36(1): 28-37. doi: 10.3969/j.issn.0253-4193.2014.01.004

Citation:

Wang Long, Wang Jing, Yang Jungang. The comprehensive analysis of sea-level change in the East China Sea[J]. Haiyang Xuebao, 2014, 36(1): 28-37. doi: 10.3969/j.issn.0253-4193.2014.01.004

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The comprehensive analysis of sea-level change in the East China Sea

doi: 10.3969/j.issn.0253-4193.2014.01.004

1.
Information Science and Engineering College, Ocean University of China, Qingdao 266100, China
2.
First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China

Received Date: 2012-11-01

Abstract

Abstract

On the basis of satellite altimeter data for 1993—2011, the seasonal signal, linear trend and low-frequency signal of the sea-level change in the East China Sea are investigated. The driving mechanisms of seasonal signal and low-frequency signal are analyzed by combining wind data, IshⅡ subsurface temperature and salinity data, sea surface temperature data and so on. The seasonal sea-level change mainly consists of annual signal, and occupies most of the sea-level change. The distribution of annual signal amplitude and phase is different in different regions. The main driving powers of seasonal signal in sea-level change are wind and thermal expansion, and the driving mechanisms are different in different regions and seasons. The leading role is also changing with the change of time and space. Besides, the seasonal signal is influenced by Kuroshio in the Kuroshio region. The mean linear trend of sea level is 3.28 mm/a and the trend is various in different places. The low-frequency signal of the sea-level change and the low-frequency signal of the steric sea-level change have notable relevance, and the correlation coefficient is 0.55. The low-frequency signal of the steric sea-level change and the low-frequency signal of SOI have certain relevance, and the max correlation coefficient is 0.3. ENSO can affect the steric sea-level change through the atmospheric circulation and the Kuroshio, and the steric sea-level change then can influence the sea-level change in the East China Sea. Therefore, ENSO can influence sea-level change through the steric-sea level change.
- East China Sea,
- sea-level change,
- altimeter,
- wind-stress,
- thermal expansion,
- ENSO,
- steric sea level

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