魏皓
目前开展海洋界面过程及其对生态系统的影响研究。
个性化签名
- 姓名:魏皓
- 目前身份:
- 担任导师情况:
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学术头衔:
博士生导师
- 职称:-
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学科领域:
物理海洋学
- 研究兴趣:目前开展海洋界面过程及其对生态系统的影响研究。
魏皓,女,1964年生人,1990年清华大学工程物理系同位素分离专业硕士毕业后,在中国海洋大学(青岛海洋大学)任教,教授流体力学、计算流体力学、海洋学、浅海动力学等课程,指导硕士研究生、博士研究生20余人。
从事浅海环境动力学研究,对渤海环流与输运进行了深入研究,并开展了三维生态系统动力学模型研究和浅海湍流混合研究,参加了国家自然科学重点基金“中国陆架海环流机制探讨”研究,在国家重大自然科学基金项目“渤海生态系统动力学与生物资源可持续利用”中承担第四课题的海上观测组织和三维生态模型研究,该项目获浙江省科学技术一等奖(本人排名第九)。作为骨干成员参与组织了中德政府间合作项目“渤海生态系统的综合分析与模型”,该成果在国际知名刊物Journal of Marine System发表专集。“中国典型海域入海物质的水文地球化学过程及其环境效应”获得科技部重点国际合作项目资助。“陆架边缘交换及其对气候变化的响应”获得教育部重点科技项目资助。在“东、黄海生态系统动力学与生物资源可持续利用”和“近海食物生产关键过程研究”两个973项目中各主持一个课题,探讨海洋物理过程的生态效应,目前进一步研究海洋重要界面(水-底、颗粒物-水、跃层)物质交换的关键过程及其在营养盐补充、维持和调节生态系统中的作用。 现为PICES EBM WG成员,CCCC Model and concept task team 成员;中国GLOBEC/IMBER工作组成员;中国海洋与湖沼学会计算物理海洋专业委员会秘书长;IAPSO中国委员会委员。2005年被评为教育部新世纪优秀创新人才。 1997年、2000年先后两次赴德国汉堡大学海洋研究所合作研究。主持国家重点基础研究发展规划项目课题2项,作为主要成员参加国家重大自然科学基金1项、重点基金3项、自然科学基金2项、与香港合作基金1项、政府间国际合作2项、科技部重点国际合作项目1项、国家攻关项目1项、863课题1项、博士点基金2项、主持教育部重点科技项目1项、主持山东省自然科学基金1项,发表论文60余篇。先后在渤、黄、东、南海及胶州湾水域组织大型综合调查20余次,为历任首席科学家,在海洋观测实验方案的设计和实施方面有较丰富的经验。工作得到同行的好评, 海环流动力学、生态动力学等方面取得较多成果,目前开展海洋界面过程及其对生态系统的影响研究。
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293
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成果数
6
【期刊论文】COMPARISON OF THE EULERIAN AND LAGRANGIAN TIDAL RESIDUALS IN THE BOHAI SEA
魏皓, WEI Hao, ZHAO Liang, FENG Shi-zuo
CHIN. J. OCEANOL. LIMNOL., 19 (2), 2001 ,-0001,():
-1年11月30日
Tidal residual is very important to the transport of water particles, nutrients, plank-ton, etc. in the coastal sea. Eulerian scheme and Lagrangian scheme are two different ways to get thetime averaged residual. Solution of the Bohai Sea's hydrodynamic system using a semi-implicit layer aver-aged numerical model yielded different direction Eulerian and Lagrangian tidal residuals. The latter werestronger than the former in most sea areas. Their different directions produced different circulation patternin some areas. Compared with the Eulerian residual, the Lagrangian residual seemed to be more in accordwith the observation.
Eulerian and Lagrangian tidal residual,, Bohai Sea
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魏皓, , 赵亮, 冯士
海洋学报,2003,25(2):76~651,-0001,():
-1年11月30日
建立了一个与水动力模型耦合的、以浮游植物生物量、无机氯浓度、磷酸盐浓度、底碎屑含碳量为变量的三维生态模型,模拟出了与观测基本相符的渤海浮游植物量和初级生产年变化规律、水平及垂直分布的季节变化。渤海的浮游植物生物量和初级生产均呈双峰结构,夏季为高生产季节。垂直湍流混合与生物量密切相关,水体越稳定越有利于生物量的增加。模型对于磷与碳之比及无机氮半饱和常数比较敏感,需加强对敏感参数的实验测定。该模型可以用于浮游植物动力学过程的研究.
浮游植物生物量, 初级生产, 年变化, 三维模型, 渤
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魏皓, , 赵亮, 冯士
海洋学报,2003,25(2):251~651,-0001,():
-1年11月30日
以所建立的三维生物- 物理耦合模型估算了渤海碳循环过程,探讨了水平对流、河流输入、氮磷循环、非保守输运等过程对渤海低营养级系统的影响。渤海是大气二氧化碳微弱的汇。在碳循环中,总光合生产的13.7%进入营养的高一级,76.8%被自身呼吸消耗。营养盐再生主要源于内部生物地球化学循环,有机物的矿化过程是营养盐从有机向无机形态转换的主要机制. 水平对流过程降低了海域生物量,有利于减轻局部海域的富营养化程度。河流输入只引起局部海域系统调整,渤海生物自净能力十分有限,控制限制生物生长的营养盐的排放有利于减少浮游植物的生物量。
碳循环, 浮游植物动力学, 渤海
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【期刊论文】Tidal-induced Lagrangian and Eulerian meancirculation in the Bohai Sea
魏皓, Hao Weia, *, Dagmar Hainbucher b, Thomas Pohlmann b, Shizuo Feng a, Juergen Suendermann b
Journal of Marine Systems 44(2004)141-151,-0001,():
-1年11月30日
Long-term transport processes in coastal seas with time scales from weeks to seasons time scale are controlled by residualcirculation. In the Bohai Sea, an ultrashallow shelf sea of China, tidal residual is almost the dominant factor to the circulationdue to slight stratification and weak wind in summer. In order to establish an adequate hydrodynamic base to the ecosystemdynamics of the Bohai Sea, the differences of tide-induced Lagrangian and Eulerian mean circulation are discussed andcalculated in this contribution. The Stokes drift is analyzed theoretically. According to Longuet-Higgins [Deep-Sea Res. 16 (1969) 431], the Lagrangian flow is the sum of the Eulerian flow and the Stokes drift that is induced by the mean kinetic energyand coastal nonlinear interaction. Stokes drift is large in the coastal sea and in areas where the vorticity and/or divergence arelarge. Vertical mass transports by Stokes drift are also the result of nonlinear interaction of current, water level and topography.Hamburg Shelf Ocean Model (HAMSOM) is applied in the Bohai Sea to simulate the tides and tidal currents. The tide-inducedLagrangian mean circulation and the Eulerian one are calculated at the same time. In the area where the Stokes drift is in thesame direction as the Eulerian residual, the Lagrangian one is stronger than the Eulerian one. Where they are pointing inopposite directions, the Lagrangian one is small, like in the southwest of the Bohai Bay, Liaodong Bay and Bohai Strait. TheLagrangian residual current flows into the Bohai Bay along its southern bank causing deposition of Huanghe River sediments.This is in agreement with observations.
Tidal induced Lagrangian and Eulerian mean circulation, Hydrodynamics model, The Bohai Sea
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【期刊论文】Simulation of water exchange in Jiaozhou Bayby average residence time approach
魏皓, Zhe Liua, *, Hao Weia, b, Guangshan Liuc, Jing Zhang d
Estuarine, Coastal and Shelf Science 61(2004)25-35,-0001,():
-1年11月30日
A dispersion model coupled with the Princeton Ocean Model was used to estimate the average residence time of the water inJiaozhou Bay. The tidal simulation agreed quite well with drift experiments and water elevation observations at the Dagang tidestation in the east coast of the bay. In particular, in situ measurements of 228Ra and salinity were carried out to calibrate thedispersion model. The modelled average residence time was about 52 days, ranging from less than 20 days in the deep part nearthe bay channel, the only passage connecting the bay to the Yellow Sea, to over 100 days in the shallow area in the northwest. Thespatial difference of average residence time was controlled by tidal residual currents and the distance to the bay channel. Themodelled tidal exchange rate was uneven in the bay, and consistent with 228Ra observations. The temporal evolution of the passivetracer accords with the evolution of the rain fraction after the rainstorm in August 2001.
water exchange, dispersion model, average residence time, Jiaozhou Bay
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