朱建荣
长江冲淡水扩展动力机制、河口环流、河口盐水入侵和最大浑浊带、海洋潮汐和环流、近岸锋面和急流、数值计算方法和数值模式等方面
个性化签名
- 姓名:朱建荣
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学术头衔:
博士生导师
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学科领域:
物理海洋学
- 研究兴趣:长江冲淡水扩展动力机制、河口环流、河口盐水入侵和最大浑浊带、海洋潮汐和环流、近岸锋面和急流、数值计算方法和数值模式等方面
朱建荣,1964年生,1987年毕业于浙江师范大学物理专业,1990年7月青岛海洋大学物理海洋专业硕士毕业,1993年7月青岛海洋大学海洋气象专业博士毕业,同年进入华东师范大学河口海岸研究所从事博士后研究工作, 出站后留在河口海岸国家重点实验室工作至今,1998年被聘为教授,1999年评为博士生导师。4次赴美国 Georgia 大学和Massachusetts大学、2次赴韩国成钧馆大学合作研究。主要从事河口海洋动力学和海洋数值模式方面的研究工作,主持973海洋环流项目03课题、国家自然科学基金项目等等基金项目15余项。在长江冲淡水扩展动力机制、河口环流、河口盐水入侵和最大浑浊带、海洋潮汐和环流、近岸锋面和急流、数值计算方法和数值模式等方面取得研究成果。已出版专著3本、发表60多篇学术论文,其中4篇论文发表在国际海洋界顶级刊物Geophysical Research Letters、Journal Physical Oceanography上。获上海市青年科技启明星、上海市曙光学者、上海市优秀博士后、高等学校优秀青年骨干教师和首届高等学校教育与科研优秀青年教师等称号。
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朱建荣, ZHU Jianrong , WANG Jinhui , SHEN Huanting & WU Hui
Chinese Science Bulletin 2005 Vol. 50 No.3 1-8,-0001,():
-1年11月30日
An interdisciplinary comprehensive survey was conducted in middle and late June 2003 with the Multi- arameter Environmental Monitoring System YSI 6600 and water sample analysis in the sea off the Changjiang River mouth. The Changjiang diluted water (CDW) extended offshore with a bimodal structure during the observation, one extending toward the southeast, the other toward the northeast. The main axis of the CDW extended toward the northeast. A severe red tide with wide spatial extent and brown water color happened. Chlorophyll-a (Chl-a) distribution near the Changjiang River mouth also presented a bimodal structure, and its position and shape were roughly consistent with the extension of the CDW. Water sample analysis indicated that the serious eutrophication produced by the huge amount of nutrient load via the Changjiang River was the main cause of red tide bloom. The dominant algal specie at the most measurement stations was skeletonema costatum. There existed three centers of higher Chl-a concentration, locating at (122.45˚E, 31.5˚N), (122.4˚E, 30.8˚N) and (123.25˚E, 30.0˚N), respectively. The red tide at (122.45˚E, 31.5˚N) was located in the major modal of CDW and higher turbid seawater, its dominant algal specie was prorocentrum dentatum with density 2.23×106ind/L. The red tide at (122.4˚E, 30.8˚N) was located in the second modal of CDW and lower turbid seawater, its dominant algal specie was skeletonema costatum with density 1.0×107ind/L. The dominant algal specie at (123.25˚E, 30.0˚N) was Heterocapsa circularisquama horiguchi with density 2.0×106ind/L, which was found for the first time forming red tide in the sea off the Changjiang River mouth.
Changjiang diluted water, red tide, eutrophication, ecosystem dynamics
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【期刊论文】Prognostic Modeling Studies of the Keweenaw Current in Lake Superior. Part II: Simulation
朱建荣, JIANRONG ZHU, CHANGSHENG CHEN, ELISE RALPH, SARAH A. GREEN, JUDITH WELLS BUDD, AND FRANK Y. ZHANG
JOURNAL OF PHYSICAL OCEANOGRAPHY VOLUME 31 FEBRUARY 2001,-0001,():
-1年11月30日
The Keweenaw Current, observed along the coast of the Keweenaw Peninsula in Lake Superior during July 1973, was simulated using a 3D, nonorthogonal coordinate transformation, primitive equation coastal ocean model. The model domain covered the entire lake with a high resolution of 250-600m in the cross-shelf direction and 4-6km in the alongshelf direction along the peninsula. The model was initialized using the monthly averaged temperature field observed in June 1973 and was run prognostically with synoptic wind forcing plus monthly averaged heat flux. Good agreement was found between model-predicted and observed currents at buoy stations near Eagle Harbor. Comparison of the model results with and without inclusion of heat flux suggested that combined wind and heat fluxes played a key role in the intensification of the Keweenaw Current during summer months. The model-predicted relatively strong near-inertial oscillations occurred episodically under conditions of a clockwise-rotating wind. These oscillations intensified at the surface, were weak near the coast, and increased significantly offshore.
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朱建荣, CHANGSHENG CHEN, JIANRONG ZHU, ELISE RALPH, SARAH A. GREEN, JUDITH WELLS BUDD, AND FRANK Y. ZHANG
CHENETAL. VOLUME 31 FEBRUARY 2001,-0001,():
-1年11月30日
The formation and evolution of the Keweenaw Current in Lake Superior were examined using a nonorthogonalcoordinate primitive equation numerical model. The model was initialized by the monthly averaged temperature field observed in June and September 1973 and run prognostically under different forcing conditions with and without winds. As a Rossby adjustment problem, the model predicted the formation of a well-defined coastal current jet within an inertial period of 16.4h after the current field adjusted to the initial temperature field. The magnitude and direction of this current jet varied with the cross-shelf temperature gradient and wind velocity. It tended to intensify during northeastward (downwelling favorable) winds, and to lessen, or even reverse, during southwestward to northwestward (upwelling favorable) or southeastward (downwelling favorable) winds. In a case with strong stratification and without external atmospheric forcings, a well-defined clockwise warm-core eddy formed near the northeastern coast of the Keweenaw Peninsula as a result of baroclinic instability. A warmcore eddy was detected recently from satellite surface temperature images, the shape and location of which were very similar to those of the model-predicted eddy. The energy budget analysis suggested that the eddy kinetic energy grew exponentially over a timescale of 7 days. Growth was due to a rapid energy transfer from available eddy potential energy. The subsequent decline of the eddy kinetic energy was the result of turbulent diffusion, transfer from the eddy kinetic energy to mean kinetic energy, and outward net energy flux.
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朱建荣, Changsheng Chen , Jianrong Zhu , Lianyuan Zheng , Elise Ralph , and Judith Wells Budd
J. Great Lakes Res. 30 (Supplement 1): 41-54,-0001,():
-1年11月30日
A non-orthogonal coordinate primitive equation model has been developed for the study of the Keweenaw Current in Lake Superior. This model provides a more accurate fitting of the coastline A comparison with a curvilinear orthogonal model shows that the non-orthogonal transformation model provided a better simulation of the current jet in the near-shore region. Accurate fitting of both bathymetry and irregular coastlines plays an essential role in capturing the magnitude of the Keweenaw Current and cross-shelf structure of the thermal bar near the coast. The formation of the Keweenaw Current and thermal front was directly driven by a westerly or southwesterly wind and seasonal development of stratification over steep bottom topography. Under a condition with accurate fitting of steep bathymetry, failure to resolve the irregular geometry of the coastline can result in an underestimation of the magnitude of the Keweenaw Current by about 20cm/s.
Numerical modeling,, thermal bar,, Keweenaw Current,, Lake Superior,, numerical methods.,
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【期刊论文】Cross-frontal transport along the Keweenaw coast in Lake Superior: a Lagrangian model study
朱建荣, Changsheng Chen a, Jianrong Zhu b, KiRyong Kang c, Hedong Liu a, Elise Ralph d, Sarah A. Green e, Judith Wells Buddf
Dynamics of Atmospheres and Oceans 36(2002)83-102,-0001,():
-1年11月30日
Offshore transport across the thermal front along the Keweenaw coast in Lake Superior was examined by tracking the trajectories ofwater particles in the model-simulated three-dimensional (3D) flow field of July 1973. Particles were released at different depths and horizontal locations within the Keweenaw Current during various wind events and were tracked until the end of the month. The trajectories of water particles showed a remarkable offshore cross-frontal water transport at the topographic-splitting point on the eastern side of the Keweena Waterway and near Eagle Harbor. This transport was driven dominantly by wind-induced Ekman flow near the surface but was controlled by local bottom topography in the deep region. A northeastward wind prevailed over the lake during July 1973. This wind tended to produce onshore water transports near the surface and hence caused downwelling against the coast. An offshore current was expected in the deep region based on the conservation of water mass. The vortex shedding off coastal bathymetry abutments plus baroclinic instability of the thermal front also led to offshore meandering of the temperature field in the deep region over local varying bottom topography. This meandering tended to produce a cyclonic vorticity and drove particles offshore across the thermal front along the northern coast of the Keweenaw Peninsula.
Cross-frontal transport, Lagrangian model, Wind-induced Ekman flow
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【期刊论文】Does the Taiwan warm current exist in winter
朱建荣, Jianrong Zhu, Changsheng Chen, Pingxing Ding, Chunyan Li, Huichan Lin,
GEOPHYSICAL RESEARCH LETTERS, VOL. 31, L12302, 2004,-0001,():
-1年11月30日
has been argued for many years whether the Taiwan Warm Current (TWC) exists in winter, though there is no question about its existence in summer. A regional CTD survey and anchored ADCP measurements were conducted off the mouth of the Changjiang on the western shelf of the East China Sea from 24 February to 10 March 2001. Both hydrographic and current data showed an evidence of the TWC, which flowed northeastward along the 50-m isobath and intruded into the submerged river valley off the Changjiang. This current is sub-surface intensified, with a maximum velocity of 30cm/s occurring at a depth of 30m below the surface. This finding was consistent with the satellite-derived SST image received on 26-30 January 1986 and MODIS SST image received on 18 February 2001. It suggests that the TWC is at least an episodic feature in the East China Sea and its occurrence and duration might vary due to meandering of the Kuroshio around the Taiwan Strait.
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朱建荣, 丁平兴, 胡敦欣
海洋与湖沼,2003,34(3):249~255,-0001,():
-1年11月30日
采用CTD、多参数环境监测系统2YSI等仪器设备,于2000年8月在长江口外海区对长江冲淡水结构、羽状锋等进行了现场观测。2000年8月长江冲淡水出口门后,朝东北偏北流动,而当年8月为长江径流量偏小的月份。通过动力分析指出了近口门段长江冲淡水分布类型与径流量的关系。长江冲淡水主流在近口门附近朝东北偏北扩展后,在科氏力作用下朝东南扩展,在转向区域为沿水下河谷北上的高盐台湾暖流水。高盐的台湾暖流水和长江冲淡水混合,生成口外羽状锋,强度大,阻挡了长江冲淡水向东扩展,并使冲淡水在当年径流量偏小情况下朝东北偏北运动。部分台湾暖流水在中下层能穿越长江口外而向北流动。羽状锋主要存在于长江口外122.6˚E附近的15m水层之上。在浙江沿岸、长江口外水下低谷西侧、吕泗近岸存在着上升流现象。
长江冲淡水, 羽状锋, 上升流, 台湾暖流, 现场观测
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朱建荣, ZHU Jianrong
Chinese Science Bulletin 2003 Vol. 48 No.24 2754-2758,-0001,():
-1年11月30日
Based on the analysis of the field observation data off the Changjiang mouth in August 2000 and satellite image of sea surface temperature (SST) in summer of 1997, it indicates that there exists the upwelling event on the west side of the submerged river valley (SRV) off the Changjiang mouth. The calculated results of the three-dimensional numerical model show that this upwelling is induced by the barotropic effect, baroclinic effect, bottom Ekman effect and their interaction with the slope bottom topography. The baroclinic effect is the main cause producing the upwelling at the northern SRV (on the east side of the South Passage of the Changjiang estuary), while the barotropic effect is the main cause at the southern SRV (on the east side of the center of the Hangzhou Bay mouth). The dynamic mechanism producing the upwelling off the Changjiang mouth is different with the general one along coast and on the continental shelf.
off the Changjiang mouth, upwelling, field observation, numerical simulation, dynamic mechanism.,
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朱建荣, ZHU Jianrong, QI Dingman, XIAO Chengyou
Chinese Journal of Oceanology and Limnology Vol.22, No.3, P. 250-255, 2004,-0001,():
-1年11月30日
Data taken in two large scale ocean observations in China in summer 1959 and 1982 were used to analyze the residual current of the Changiiang (Yangtze) River mouth. The currents at surface of the mouth in July 1959 and 1982 flow northeastward and eastward due to the river discharge, the current speed was larger in 1982 than in 1959. All the botom currents flow landward due to baroclinic efect. The surface current was controlled by the river runof and the Taiwan Warm Current (TWC). A return current at surface of the mouth was observed in September 1959. In general, the botom currents were controlled by the TWC in most study area in addition to the runof near the mouth. Although driven by 3-D model with the monthly averaged forces (river discharge, wind stress, baroclinic efect, open boundary water volume flux and tidal mixing) in August, the simulated circulations were basically consistent with the observed ones with episodic time manner.
off the Changjiang (, Yangtze), River mouth, observed residual current, runof Taiwan Warm Current
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