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Numerical modeling of the seasonal circulation in the coastal ocean of the Northern South China Sea

Frontiers of Earth Science 2020年第1期14卷 90-109页

作者： Yang DING Zhigang YAO Lingling ZHOU Min BAO zhengchen zang Physical Oceanography Laboratory/CIMST Ocean University of China and Qingdao National Laboratory for Marine Science and TechnologyQingdao 266100China College of Oceanic and Atmospheric Sciences Ocean University of ChinaQingdao 266100China State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of OceanographyState Oceanic AdministrationHangzhou 310012China Department of Oceanography and Coastal Sciences Louisianan State UniversityBaton RougeLA 70803USA

The Finite Volume Community Ocean Model(FVCOM)was adapted to the Northern South China Sea(NSCS)to investigate the seasonality of coastal circulation,as well as along-shelf and cross-shelf *** fall and winter,southwestward current dominates the NSCS shelf,while the currenfs direction shifts to northeast in *** circulation pattern in spring is more complicated:both southwestward and northeastward currents are detected on the NSCS *** mean shelf circulation pattern in winter does not show the permanent counter-wind South China Sea Warm Current(SCSWC)along the 100-200 m ***,the model results indicate a northeastward current flowing along 50-100 m isobaths in *** along-shelf transport varies from 0.30-1.93 Sv in fall and winter,and it redirects to northeast in summer ranging jfrom 0.44—1.09 *** transport is mainly through the shelf break segment southeast of the Pearl River Estuary.

关键词： Northern South China Sea coastal ocean seasonal circulation along-shelf and cross-shelf transport Ocean model FVCOM

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Anti-Phase Relationship Between the East Asian Winter Monsoon and Summer Monsoon During the Holocene?

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Journal of Ocean University of China 2017年第2期16卷 175-183页

作者： GE Qian XUE Zuo YAO Zhigang zang zhengchen CHU Fengyou Second Institute of Oceanography State Oceanic AdministrationHangzhou 310012P.R.China Key Laboratory of Submarine Geosciences State Oceanic AdministrationHangzhou 310012P.R.China Department of Oceanography and Coastal Sciences Louisiana State UniversityBaton RougeLA 70803USA Center for Computation and Technology Louisiana State UniversityBaton RougeLA 70803USA Coastal Studies Institute Louisiana State UniversityBaton RougeLA 70803USA Key Laboratory of Physical Oceanography Ocean University of ChinaQingdao 266100P.R.China

The relationship between the East Asian winter monsoon(EAWM) and East Asian summer monsoon(EASM) during the Holocene is complicated and remains *** this study,analysis of grain size and benthic foraminiferal oxygen isotope,as well as accelerator mass spectrometry ^(14)C dating was performed on a sediment core retrieved from the newly revealed muddy deposit on the northern South China Sea continental *** history of the EAWM and EASM were reconstructed for the last 8200 a *** analysis in conjunction with previously published paleo-climate proxies revealed that the relationship between the EAWM and EASM during the Holocene is more complex than a simple and strict anti-phase one-both negative and positive correlations were *** EAWM and EASM are negatively correlated around 7500,4800,4200,3200,and 300 a BP(cooling periods),while positively correlated around 7100,3700,and 2100 a BP(warm periods).In particular,both the EAWM and EASM intensified during the three positive correlation ***,we also found that the relationship between these two sub-monsoons is anti-phase during the final phase of particularly hot periods like Holocene Optimum and Medieval warm *** possible impact from variations of solar irradiance on the relationship between the EAWM and EASM was also discussed.

关键词： grain size oxygen isotope South China Sea East Asian winter monsoon East Asian summer monsoon Holocene

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黄海近岸锋面的时空变化及其对沉积物输运和沉积的影响

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海洋地质前沿 2015年第7期31卷 1-10页

作者：藏政晨王厚杰薛佐毕乃双吴晓张勇中国海洋大学海洋地球科学学院青岛266100 美国路易斯安那州立大学海底科学与探测技术教育部重点实验室青岛266100 中国地质调查局青岛海洋地质研究所青岛266071

利用2010和2012年黄海海域不同季节的航次观测数据与HYCOM模式再分析数据进行了比对,检验了HYCOM模式的水体温度数据在黄海海域的适用性。据此分析了黄海海域的温度锋面和混合锋面的时空变化。结果显示,温度锋通常在秋季开始出现,在冬... 详细信息

利用2010和2012年黄海海域不同季节的航次观测数据与HYCOM模式再分析数据进行了比对,检验了HYCOM模式的水体温度数据在黄海海域的适用性。据此分析了黄海海域的温度锋面和混合锋面的时空变化。结果显示,温度锋通常在秋季开始出现,在冬季最为发育,在春季逐渐消失;黄海混合锋面与季风活动密切相关,主要在秋季开始出现,在冬季发育。悬浮沉积物基本上集中在温度锋的向岸一侧,难以跨越锋面输运。山东半岛成山头海域的温度锋在形态及空间位置上与泥质沉积区相对应,沉积中心(厚度40m)主要分布在温度锋的西侧,而在其东侧泥质沉积厚度快速减小。研究结果发现,秋冬季节混合锋与温度锋的空间位置并不一致,混合锋位于温度锋的西侧,强烈混合使得沉积物不易沉降,对应泥质沉积厚度小;而在混合锋东侧,悬浮沉积物浓度高且水体层化显著,沉积物易于沉降堆积,与泥质沉积中心对应。混合锋与温度锋的空间分布差异与共同作用可能是该区域泥质沉积体"Ω"形态发育的动力学机制。

关键词：黄海 HYCOM模式沉积物输运温度锋混合锋泥质沉积区

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