Tidal response of sea level rise in marginal seas near China
Tidal response of sea level rise in marginal seas near China
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发表时间：
2013
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影响因子：
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通讯作者：
Zhang Weisheng;Z. Jin-shan;Lin Ruidong;Zong Hucheng
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作者：
Zhang Weisheng;Z. Jin-shan;Lin Ruidong;Zong Hucheng
本文利用西北太平洋潮汐数值模式研究了平均海平面上升引起的西北太平洋边缘海潮汐系统和潮位变化。结果表明，平均海平面上升后，无潮点以东的相位滞后增大，无潮点以西的相位滞后减小，无潮点以北的振幅增大，无潮点以南的振幅减小。由于平均海平面上升，无潮点以东的相位滞后增大，无潮点以西的相位滞后减小，无潮点以南的振幅减小。辽东湾、渤海湾上游、辽东半岛以东海域、山东南部海州湾沿岸、江苏北部沿岸、浙江东部台湾海峡、长江口、杭州湾至对马海峡、朝鲜西海岸、莱州湾等海域的平均潮差减小，随着海平面上升的增加，潮差减小的幅度逐渐增大，最大潮差出现在海平面上升0.90m后的0.40m。渤海、台湾海峡潮差变化相对稳定，黄海、东海、南海潮差变化相对波动，平均高水位变化与潮差变化雅阁，潮差升高地区的平均高水位比平均海平面升高幅度更大，这意味着沿海地区防御风暴潮等海洋灾害的风险增加。
A numerical model of the Northwest Pacific is developed to study tidal system and tidal level changes due to mean-sea-level rise in marginal seas near China.The results show that after mean-sea-level rise,phase lags are increased to the east and decreased to the west of amphidromic point.The amplitude is enhanced to the north and diminished to the south of amphidromic point.Due to mean-sea-level rises,the mean tidal range is enlarged in the Liaodong Bay,the upper reaches of Bohai Bay,seas east of Liaodong Peninsula,coast of Haizhou Bay to the south of Shandong province,the north coast of Jiangsu province,the Taiwan Strait to the east of Zhejiang province,and the South China Sea.The maximum range is 0.40 m after mean-sea-level rise 0.90m.The mean tidal range is reduced in estuary of Yangtze River,Hangzhou Bay to Tsushima Strait,the west coast of Korea,and Laizhou Bay.With the increase of sea level rise,tidal range varies with relatively stable rate in the Bohai Sea,Taiwan Strait,and it with fluctuation in the Yellow Sea,East China Sea and South China Sea.Variation of mean high water level is in accord with tidal range.It uplifts more over than the mean-sea-level in areas where tidal range raises.That means the risk would increase of coastal areas to protect storm surge and other marine disasters.