中国沿岸海平面变化原因的探讨  

THE ANALYSIS OF SEALEVEL VARIATION FACTOR ALONG CHINA COAST

作　　者：左军成[1] 于宜法[1] 陈宗镛[1] 

机构地区：[1]青岛海洋大学

出　　处：《地球科学进展》1994年第5期48-53,共6页Advances in Earth Science

摘　　要：对中国沿岸的月均海平面的变化原因进行了较为细致的分析，讨论了温、压、降水对中国沿岸海平面的影响。得出渤海是我国月均海平面变化最大的海区；黄海月均海面的变化仅次于渤海；东海更次；南海最小。出现极值的时间自北向南依次滞后。静压效应的影响也是自北而南逐渐变小。月均海面中除包含了８～９年及１０多年的长周期变化外，１４．０和１８．０个月左右的周期对海平面有明显的影响，３年的周期不是一种沿岸传播的波动周期。ＥｌＮｉｎｏ对中国沿岸海平面起补偿平衡作用。黑潮的增强使中国沿岸海平面均有明显的抬升。This paper analyses the causes of monthly mean sealevel change along China coast indetail, and the effect of temperature,pressure and precipitation to sealevel is discussed.The variation of monthly mean sealevel in Bohai Sea is the greatest;the Huanghai Sea,thesecond;the East Sea, the third;and the South Sea,the smallest.The time of extremevalue is delaying in order, and the static pressure is becoming smaller successively fromnorth to south.Except for the variation of 8- 9and 10 more years long period, the effectof about 14.0 months variation is remarkable, and the amplitude is 1- 2cm,this is the ef-fect of pole tide.The influence of 18 months variation is also notable. The period of 3years is not a wave,but a synchronous action along China coast.The yearly mean sealevelvalue in El Nino year is in the medium value of maximum and minimum, and El Nino actas a indemnifying balance function to the sealevel variation along China coast.The increas-ing of Krushio of PN section causes the rising of sealevel along China coast, the action atthe mouth of Yangtze River is most remarkable,and is weakening with the distance longerfrom Yangtze River.

关 键 词：极潮 黑潮 海平面变化 厄尔尼诺 

分 类 号：P731.23[天文地球—海洋科学]