Review on current and seawater volume transport through the Taiwan Strait   总被引：12，自引：0，他引：12  

Jianyu Hu  Hiroshi Kawamura  Chunyan Li  Huasheng Hong  Yuwu Jiang 《Journal of Oceanography》2010,66(5):591-610

Patterns and features of currents and seawater volume transports in the Taiwan Strait have been reviewed by examining the results from more than 150 research papers in recent decades. It is noted that there are diverse or even conflicting viewpoints on these subjects. Here both common and different opinions are summarized. This review paper covers the studies involving in situ measurements and numerical modeling of current velocity, analyses of hydrographic data, and classification of water masses. Generally speaking, there are three currents in the Taiwan Strait: the China Coastal Current along the Fujian coast in the western Taiwan Strait, the extension of the South China Sea Warm Current in the western and central Taiwan Strait, and the Kuroshio’s branch or loop current intruding through the eastern Taiwan Strait. The current pattern in winter is quite different from that in summer, and the currents also exhibit differences between the upper and lower layers. The seawater volume transport through the Taiwan Strait is about 2.3 Sv northward in summer but about 0.8 Sv northward in winter. Both the current pattern and the seawater transport vary with local winds in the Taiwan Strait. This is particularly true in winter when the currents and the transport in the upper layer are significantly affected by strong northeasterly winds.  相似文献   

Shapley-模糊神经网络方法在华南台风卫星云图的长时效滚动预测中的应用     

黄小燕  何立  赵华生  黄颖  吴玉霜 《气象学报》2021,79(2):309-327

为了更好地利用大量的卫星云图观测资料来提高台风暴雨的预报能力,解决并提高对台风强降水云系变化的预报精度,延长对未来云系变化的预报时效,构建基于合作对策Shapley-模糊神经网络的华南区域台风卫星云图非线性智能计算滚动集合预测模型,对增强卫星云图资料在台风暴雨天气预报中的实用性和及时性具有重要意义.依据2013—201...  相似文献   

地质学领域科研人员参与科普：现状调查与促进建议     

邵华胜  郑念 《地质论评》2024,70(3):1113-1120

地质学领域科研人员参与科普对地质学科发展、科普高质量发展和经济社会发展有着重要的推动作用。调查结果显示,大多数地质学领域科研人员认可科普的作用和意义,愿意积极参与科普活动。然而,保障力度不够、传播渠道不畅、科普内容不深入、科普能力不均衡问题相对突出。增强地质科研单位科普责任意识,强化相关科协和学会的职能,加强晋升激励、奖酬激励及考核激励体系建设,加大地质科普技能培训和经验交流,引导地质科研人员提升科普能力,是促进地质学领域科研人员参与科普的关键。  相似文献   

Chemical forms of iron in the Connecticut River estuary     

Huasheng Hong  Dana R. Kester 《Estuarine, Coastal and Shelf Science》1985,21(4):449-459

The ‘dissolved’ iron (that passed through a 0·4-μm filter) varied nonconservatively with salinity in the Connecticut River estuary. However, the total iron appeared to be conservative. Measurements of Fe(II) and Fe(III) showed that oxidation of Fe(II) was not a factor in the decrease of ‘dissolved’ iron in the low salinity region. A solubility model and analyses based on different pore-size filters indicated that a substantial amount of the ‘dissolved’ iron in the low salinity region was colloidal iron. The coagulation of fine colloidal particles led to the non-conservative behavior of ‘dissolved’ iron during estuarine mixing, but it did not necessarily lead to removal of total iron from the waters. Particulate iron was 80–90% of the total iron and it covaried with the total suspended matter during mixing and sediment resuspension. The residence time of water in the Connecticut River estuary was too short to allow removal of iron from the water column within the estuary.  相似文献   

Bioavailability of dissolved organic phosphorus compounds to typical harmful dinoflagellate Prorocentrum donghaiense Lu   总被引：4，自引：0，他引：4  

Huang B  Ou L  Hong H  Luo H  Wang D 《Marine pollution bulletin》2005,51(8-12):838-844

The bioavailability of dissolved organic phosphorus (DOP) compounds to harmful alga Prorocentrum donghaiense Lu and its alkaline phosphatase activity (APA) were studied. Results showed that P. donghaiense could utilize the test DOP compounds such as glucose-6-phosphate (G-6-P), adenosine triphosphate (ATP) and ribonucleic acid (RNA) to sustain its growth. Nutrition between the test DOP compounds and orthophosphate was comparable. P. donghaiense could utilize intracellular phosphorus to sustain growth under depletion of dissolved phosphorus. Variation of APA in different test DOP compounds was addressed; the controlling mechanism of APA in different DOP media was discussed.  相似文献   

^14C标记现场测定海洋初级生产力培养方法比较     

彭兴跃  洪华生 《台湾海峡》1997,16(1):67-74

以大亚湾和台湾海峡的实测数据为依据，认为培养过程中的搅动十分重要。对比＾１４Ｃ测定初级生产力的几种培养方法，结果表明，悬挂式现场培养法比较可靠，但其应用受到一定限制；旋转培养法与悬挂式现场培养法结果相近，又可在甲板上进行，值得推广；静置培养法由于培养过程中缺乏搅动，数据不稳，结果偏低，不宜采用。２４ｈ连续悬挂式现场培养法的结果及计算机对培养过程的模拟指出，新固定的碳可快速损失，因此培养时间不宜超过  相似文献   

海洋沉积物中总硅的分光光度法测定     

徐立  洪华生 《海洋科学》1991,15(1):44-47

本文采用聚四氟乙烯高压罐消化海洋沉积物。这种密闭的消化体系避免了硅的挥发损失和玷污,能达到对高含量硅沉积物的完全消化,并且消除了氢氟酸的干扰;采用分光光度法测定总硅,简化了操作步骤,加快了测定速度。本法的精密度为0.8％,回收率为99—lOl％,测定水系沉积物标准样品的结果与推荐值的相对偏差小于O.5％。本法已应用于台湾海峡沉积物总硅的测定,获得满意的结果。  相似文献   

厦门港湾沉积物中有机氯农药和多氯联苯的垂直分布特征   总被引：11，自引：0，他引：11  

陈伟琪  张珞平  徐立  王新红  洪华生 《海洋科学》1996,20(2):56-60

从厦门港海区采集两根沉积柱样，研究有机氯农药六六六（ＨＣＨｓ），滴滴涕（ＤＤＴｓ）和多氯联苯（ＰＣＢｓ）在沉积物中的垂直分布，ＨＣＨｓ，ＤＤＴｓ及ＰＣＢｓ含量用ＧＣ法测定，取自厦门港湾口的１号柱样ＨＣＨｓ，ＤＤＴｓ和ＰＣＢｓ的含量范围分别为０．１２～ ０．３２ｎｇ／ｇ，４．６４～１０．５ｎｇ／ｇ和０．０９～０．４６ｎｇ／ｇ取自厦门西港内湾的５号柱样采分别为０．１７～０．３１ｎｇ／ｇ，３．６５  相似文献   

Preliminary study on the distribution of nutrients, organic matter, trace metals in sea surface microlayer in Xiamen Bay and Jiulong Estuary   总被引：1，自引：0，他引：1  

Hong Huasheng  Lin Jie 《海洋学报(英文版)》1990,9(1):81-90

-The enrichment of nutrients (NOa-, NOa-, PO43-), suspended particles, organic matter (POC, PON,DOC) , and trace metals (Cu, Ni, Cd) was determined in the sea surface microlayer of Xiamen Bay and Jiulong Estuary. The mean enrichment factors ([Xi]microlayer/[Xi ]15cm in depth) mostly ranged between 1 . 0 and 2. 0. The dissolved forms were the major forms of the components measured, the enrichment of dissolved organic matter and suspended particles could lead to the changes in the total amount and speciation of nutrients and trace metals. No correlation was observed between sample concentrations, speciation, enrichment factors and sample locations. However, some evidence shows that these parameters are correlated with sea state, indicating the complexity and dynamic nature of the sea surface microlayer.  相似文献   

高斯－勒让德积分公式的加速算法研究     

李卫军  操华胜 《地理空间信息》2008,6(4):113-115

高斯-勒让德积分公式的优点是用较少节点数得到高精度的计算结果,但当积分区间较大时,积分精度并不理想。在一般高斯-勒让德积分公式和变步长高斯积分公式讨论基础上,提出精度更好收敛更快的求积公式并验证计算效果更好。  相似文献