渤海海峡水交换多时间尺度变化特征研究
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摘要
基于长时间的FRA-JCOPE数据,本文着重对渤海海峡水交换的多时间尺度变化特征进行了分析。通过分析认为,渤海海峡水交换具有明显的季节(360天和180天周期)、季节内(120天周期)和年际变化特征,且空间分布呈现较为明显的"南出北进"特点。360天季节变化特征表现为夏强冬弱,局地风场、海峡两侧海表高度梯度、陆地径流的季节变化对其具有重要影响;180天周期的季节变化和120天周期季节内变化信号与局地风场关系不大,主要受到海峡两侧海表高度梯度的调制。同时,渤海海峡水交换受1997—1998年ENSO影响较为显著:正常年份时,渤海海峡水交换流入、流出量基本相当,但当1997—1998年ENSO显著年份时,流出量略大于流入量,这是由于黄渤海环流增强,进而导致渤海海峡水交换增强造成的。
Based on the long-term FRA-JCOPE data,we studied the multi-time scale variations of water exchange across the Bohai Strait.Results revealed distinct characteristics of seasonal(360 and 180 d),intraseasonal(120 d),and interannual variations of the water exchange.The water flows into the Bohai Sea via the northern Bohai Strait and flows out via the southern Bohai Strait.The water exchange is strong in summer and weak in winter.Seasonal variations of local wind,sea surface height on both side of the strait,and the in-bay rivers are the main factors on the water exchange.The periods of 180 d and 120 d are controlled by the sea surface height change.Meanwhile,the 1997—1998 ENSO event considerable enhanced the circulation between the Bohai Sea and the Yellow Sea,and so did the water exchange.
Based on the long-term FRA-JCOPE data,we studied the multi-time scale variations of water exchange across the Bohai Strait.Results revealed distinct characteristics of seasonal(360 and 180 d),intraseasonal(120 d),and interannual variations of the water exchange.The water flows into the Bohai Sea via the northern Bohai Strait and flows out via the southern Bohai Strait.The water exchange is strong in summer and weak in winter.Seasonal variations of local wind,sea surface height on both side of the strait,and the in-bay rivers are the main factors on the water exchange.The periods of 180 d and 120 d are controlled by the sea surface height change.Meanwhile,the 1997—1998 ENSO event considerable enhanced the circulation between the Bohai Sea and the Yellow Sea,and so did the water exchange.
引文
万修全,马倩,马伟伟,2015.冬季高频大风过程对渤海冬季环流和水交换影响的数值模拟.中国海洋大学学报,45(4):1-8
王强,2004.渤海环流的季节变化及浮游生态动力学模拟.青岛:中国海洋大学硕士学位论文,21-32
王桂芝,高抒,2002.黄渤海水体交换、悬沙特征及其对渤海海峡沉积的影响.海洋通报,21(1):43-48
王彩霞,黄纯玺,侯天宇,2016.黄渤海海域风场时空特征分析.地球,(3):420-421
曲立新,2014.黄渤海环流对冬季大风过程的响应机制研究.青岛:中国海洋大学硕士学位论文,67-83
张志欣,乔方利,郭景松等,2010.渤海南部沿岸水运移及渤黄海水体交换的季节变化.海洋科学进展,28(2):142-148
林霄沛,吴德星,鲍献文等,2002.渤海海峡断面温度结构及流量的季节变化.青岛海洋大学学报,32(3):355-360
赵保仁,曹德明,1998.渤海冬季环流形成机制动力学分析及数值研究.海洋与湖沼,29(1):86-96
袁柱瀚,1997.渤海海峡水交换的研究.青岛:青岛海洋大学硕士学位论文,22-26
黄大吉,苏纪兰,张立人,1998.渤海冬夏季环流的数值研究.空气动力学学报,16(1):115-121
黄大吉,陈宗镛,苏纪兰,1996.三维陆架海模式在渤海中的应用:Ⅰ.潮流、风生环流及其相互作用.海洋学报,18(5):1-13
魏皓,武建平,Pohlmann T,2001.渤海环流与输运季节变化的数值模拟(英文).黄渤海海洋,19(2):1-9
魏泽勋,李春雁,方国洪等,2003.渤海夏季环流和渤海海峡水体输运的数值诊断研究.海洋科学进展,21(4):454-464
Cheng P,Gao S,Bokuniewicz H,2004.Net sediment transport patterns over the Bohai Strait based on grain size trend analysis.Estuarine,Coastal and shelf Science,60(2):203-212
Guan B X,1994.Patterns and structures of the currents in Bohai,Huanghai and East China Seas.In:Zhou D,Liang Y B,Zeng C K eds.Oceanology of China Seas.Dordrecht:Springer,17-26
Miyazawa Y,Zhang R C,Guo X Y et al,2009.Water mass variability in the western North Pacific detected in a 15-year eddy resolving ocean reanalysis.Journal of Oceanography,65:737-756
Zhao J P,Shi M C,1993.Numerical modelling of three-dimension characteristics of wind-driven current in the Bohai Sea.Chinese Journal of Oceanology and Limnology,11(1):70-79
王强,2004.渤海环流的季节变化及浮游生态动力学模拟.青岛:中国海洋大学硕士学位论文,21-32
王桂芝,高抒,2002.黄渤海水体交换、悬沙特征及其对渤海海峡沉积的影响.海洋通报,21(1):43-48
王彩霞,黄纯玺,侯天宇,2016.黄渤海海域风场时空特征分析.地球,(3):420-421
曲立新,2014.黄渤海环流对冬季大风过程的响应机制研究.青岛:中国海洋大学硕士学位论文,67-83
张志欣,乔方利,郭景松等,2010.渤海南部沿岸水运移及渤黄海水体交换的季节变化.海洋科学进展,28(2):142-148
林霄沛,吴德星,鲍献文等,2002.渤海海峡断面温度结构及流量的季节变化.青岛海洋大学学报,32(3):355-360
赵保仁,曹德明,1998.渤海冬季环流形成机制动力学分析及数值研究.海洋与湖沼,29(1):86-96
袁柱瀚,1997.渤海海峡水交换的研究.青岛:青岛海洋大学硕士学位论文,22-26
黄大吉,苏纪兰,张立人,1998.渤海冬夏季环流的数值研究.空气动力学学报,16(1):115-121
黄大吉,陈宗镛,苏纪兰,1996.三维陆架海模式在渤海中的应用:Ⅰ.潮流、风生环流及其相互作用.海洋学报,18(5):1-13
魏皓,武建平,Pohlmann T,2001.渤海环流与输运季节变化的数值模拟(英文).黄渤海海洋,19(2):1-9
魏泽勋,李春雁,方国洪等,2003.渤海夏季环流和渤海海峡水体输运的数值诊断研究.海洋科学进展,21(4):454-464
Cheng P,Gao S,Bokuniewicz H,2004.Net sediment transport patterns over the Bohai Strait based on grain size trend analysis.Estuarine,Coastal and shelf Science,60(2):203-212
Guan B X,1994.Patterns and structures of the currents in Bohai,Huanghai and East China Seas.In:Zhou D,Liang Y B,Zeng C K eds.Oceanology of China Seas.Dordrecht:Springer,17-26
Miyazawa Y,Zhang R C,Guo X Y et al,2009.Water mass variability in the western North Pacific detected in a 15-year eddy resolving ocean reanalysis.Journal of Oceanography,65:737-756
Zhao J P,Shi M C,1993.Numerical modelling of three-dimension characteristics of wind-driven current in the Bohai Sea.Chinese Journal of Oceanology and Limnology,11(1):70-79