检索结果-南通市图书馆

Spatial-temporal characteristics of chlorophyll a concentration in the Sanya Bay of china

在线全文

学校读者我要写书评

暂无评论

Spatial-temporal characteristics of chlorophyll a concentrat...

2010 Second IITA International Conference on Geoscience and Remote Sensing (IITA-GRS 2010)

作者： C.Y.Shen south china sea {3. of oceanology chinese academy of sciences guangzhou china Guangdong Ocean University Zhanjiang china Graduate School of chinese academy of sciences Beijing china P.Shi Q.G.Xing S.Z.Liang M.J.Li Yantai {3. of Coastal Zone Research chinese academy of sciences Yantai china J. D. Dong south china sea {3. of oceanology chinese academy of sciences guangzhou china

The present study investigated the spatial-temporal characteristics of chlorophyll a （chl-a） concentration in Sanya Bay by shipboard survey data at 12 stations from 2006 to 2008,and discussed the relationship between chl-a distribution and influential factors using MODIS sea surface temperature （SST）,sea surface wind （SSW） and rainwater runoff data. Results showed that the chl-a concentration in Sanya Bay ranged from 0.3. to 13.58 mg·m-3.the average concentration and standard deviation （SD） were 1.49 mg·m-3.and 1.74 mg·m-3.respectively. The chl-a showed a decreased tendency from estuary to offshore,and a decreased trends with the depth increased in the estuary of Sanya River,whereas indicated increased trends in the area offshore. In the river mouth,the relative higher value appeared in autumn. But in the zone offshore,the relative lower value appeared in spring. Summer had a obvious stratification vertically. This changes were associated with environmental factors changes in this area,such as the seasonal monsoon and nutrients from rainfall runoff.

关键词： spatial-temporal characteristics chlorophylla Sanya Bay MODIS SST QuikScat Wind

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

海水网箱养殖高体鰤弧菌病病理学研究

水产学报 1999年第2期 206-209页

作者：吴后波潘金培中国科学院南海海洋研究所!广州510301

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

南海现代沉积地质学的若干问题

台湾海峡 1991年第4期10卷 327-333页

作者：苏广庆中国科学院南海海洋研究所广州510301

本文根据大量实际调查资料,从地质学和海洋沉积学角度,论述南海现代沉积地质学7方面的规律问题,获得初步认识是:(1) 沉积物有8种沉积成因类型,5种沉积环境和相,及具有3.海退、海进旋回的沉积演化模式;(2) 沉积成因类型以陆源碎屑和生... 详细信息

本文根据大量实际调查资料,从地质学和海洋沉积学角度,论述南海现代沉积地质学7方面的规律问题,获得初步认识是:(1) 沉积物有8种沉积成因类型,5种沉积环境和相,及具有3.海退、海进旋回的沉积演化模式;(2) 沉积成因类型以陆源碎屑和生物源为主;(3. 生物沉积是判别沉积环境和相的重要标志。沉积物粒度特征,是反映主要水动力作用的可靠标志;(4) 海洋有用砂矿物和锰结核的沉积,受沉积成因类型和沉积环境所控制。

关键词：南海沉积地质学

培养条件对养殖真鲷弧菌病病原菌毒素产生的影响

在线全文

学校读者我要写书评

暂无评论

水生生物学报 2003年第2期27卷 119-121页

作者：吴后波潘金培中国科学院南海海洋研究所广州510301

研究了温度、酸碱度、气体环境、营养成分及培养时间等培养条件对真鲷病原菌最小弧菌Vm Pm毒素产生的影响。结果表明 ,温度对Vm Pm毒素的产生有显著影响 ,在 3.℃培养时产量最高 ;当pH在弱碱性环境( 7.2左右 )时 ,Vm Pm毒素产量最高 ;... 详细信息

研究了温度、酸碱度、气体环境、营养成分及培养时间等培养条件对真鲷病原菌最小弧菌Vm Pm毒素产生的影响。结果表明 ,温度对Vm Pm毒素的产生有显著影响 ,在 3.℃培养时产量最高 ;当pH在弱碱性环境( 7.2左右 )时 ,Vm Pm毒素产量最高 ;振荡通气能极大地促进Vm Pm毒素的产生 ,显著提高其产量 ;Vm Pm毒素的产量随着培养时间的延长而逐步增加 ,到 3.h即可达到最高水平 ,并维持至 72h ;改良海水营养培养基与普通海水营养培养基相比 ,更有利于毒素的产生 ,毒素产量可提高 1倍。

关键词：真鲷弧菌病最小弧菌 Vm-Pm毒素培养条件

悬移质近底参考面平衡浓度的一个计算公式——对Lane与Kalinske模式的改进

在线全文

学校读者我要写书评

暂无评论

水动力学研究与进展（A辑） 2004年第3期19卷 321-330页

作者：夏华永国家海洋局南海工程勘察中心

　根据推移质与床沙交换、悬移质主要与推移质交换的物理背景,采用Einstein床面泥沙的起动概念及推移运动概率函数表征床面泥沙起动及推移运动,采用Lane与Kalinske提出的泥沙因水流垂向脉动而进入悬浮运动的模式表征推移质进入悬浮运动... 详细信息

　根据推移质与床沙交换、悬移质主要与推移质交换的物理背景,采用Einstein床面泥沙的起动概念及推移运动概率函数表征床面泥沙起动及推移运动,采用Lane与Kalinske提出的泥沙因水流垂向脉动而进入悬浮运动的模式表征推移质进入悬浮运动的过程,建议一个床面层高度,建立了一个悬移质近底平衡浓度的一个计算公式。公式的参数由实测资料确定,公式经过了独立资料的检验,计算精度在可以接受的范围内。基于本文建议的床面层高度及参考面平衡浓度公式,建立了悬移质输沙率计算方法,取得了满意的输沙率计算精度。对于细颗粒泥沙的悬移质输沙率计算,本文公式克服了Einstein方法的缺陷。

关键词：床面层厚度悬移质近底平衡浓度输沙率

南沙海槽南部海区表层沉积物的碳酸盐沉积特征

在线全文

学校读者我要写书评

暂无评论

海洋学报 2002年第5期24卷 141-146页

作者：陈忠古森昌颜文刘芳文中国科学院南海海洋研究所边缘海开放实验室

南海的深海碳酸盐沉积及溶解作用包含极其丰富的信息，既由于陆源物质供应关系到陆地风化作用速度及气候问题，又通过海水生产力和碱度涉及大气CO_2含量的变化。南沙海槽位于加量曼丹岛西北部大陆坡与南沙台阶之间，构造上处在南沙海槽... 详细信息

南海的深海碳酸盐沉积及溶解作用包含极其丰富的信息，既由于陆源物质供应关系到陆地风化作用速度及气候问题，又通过海水生产力和碱度涉及大气CO_2含量的变化。南沙海槽位于加量曼丹岛西北部大陆坡与南沙台阶之间，构造上处在南沙海槽北断裂和南沙海槽南断裂之间的断堑带，南沙台阶有众多的海山、礁盘与槽谷，东南坡直下南沙海槽，其坡度变化为5°47'-2°23.-1°57。研究区为7°N以南至曾母暗沙浅滩、112°E以东至加里曼丹岛西北大陆坡的海区，本文称之为南沙海槽南部海区。根据67个站位表层样沉积物的CaCO_3.量结果，对CaCO_3.量变化特征、碳酸盐沉积物类型及其影响因素进行了探讨，为进一步研究本海区沉积物的碳酸盐旋回及沉积环境对全球气候变化的响应准备条件。

关键词：南沙海槽碳酸盐沉积类型碳酸钙 CaCO3 海洋沉积物

seaSONAL VARIATIONS OF CIRCULATION AND SUSPENDED MATTER TRANSPORT IN THE YELLOW AND EAST china seaS

在线全文

学校读者我要写书评

暂无评论

Journal of Hydrodynamics 2001年第4期13卷 8-13页

作者： Pang, Chong-Guang Bai, Xue-Zhi Hu, Dun-Xin Inst. of oceanology Chinese Acad. of Sci. Qingdao 266071 China

The Princeton Ocean Model (POM) was modified and used to study the monthly mean circulation in the Yellow sea and the East china sea. The calculated results showed almost all major characteristics of the circulation system and their seasonal evolutions. Offshore branch and inshore branch of the Taiwan Warm Current derived from the two sides of the Taiwan Island vary significantly in different seasons. The Tsushima Warm Current is a multi-source current, and especially in winter, mid-shelf water is its main source. The Yellow sea Warm Current (YSWC) is the strongest in winter, and a part of the YSWC water always adds into the Tushima Warm Current through the north and south sides of the Cheju Island. The calculated thermal structures showed distinct path of the YSWC in winter and the position and scope of the Yellow sea Cold Water Mass in summer. Based on the circulation simulation, suspended matter transport was modeled numerically by adding its governing equation into the POM. Simulated results on the temporal and spatial distribution of total suspended matter concentration revealed and further proved that seasonal characteristics of suspended matter transport are: storage in summer and autumn, transport in winter and spring in the Yellow and East china seas. Shelf circulation plays a crucial role in long-term suspended matter transport.

关键词： Computational fluid dynamics Computer simulation Ocean currents Sediment transport

FLOCCULATION OF DISSOLVED Fe, Al, Mn, Si, Cu, Pb AND Zn DURING ESTUARINE MIXING

在线全文

学校读者我要写书评

暂无评论

Acta Oceanologica Sinica 1987年第4期6卷 568-576页

作者：林植青郑建禄陈金斯黄仁权 south china sea {3. of oceanology Academia Sinica Guangzhou China.

This is the first study of the flocculation of dissolved Fe, Al, Mn, Si, Cu, Pb and Zn during mixing in Zhujiang Estuary, based on the experiment on a series of solutions of salinities ranging from 0 to 24 by mixing the Zhujiang water near Zhongshan University and the seawater in Wan-shan Archipelago area. The mechanism of flocculation of the 7 elements is explored, and the effects of time, acidity and temperature on flocculation are discussed. The results show that the flocculation rates of Fe and Pb in the Zhujiang water are almost a hundred per cent, while that forCu reaches 76%; for Mn, 51%; for Al, 48%; for Zn, 28%; and for Si, 1.2%, indicating that Si is conservative.

关键词： Pb AND Zn DURING ESTUARINE MIXING Si FLOCCULATION OF DISSOLVED Fe Zn Mn Cu Al

A possible generation mechanism of the strong current over the northwestern shelf of the south china sea

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Acta Oceanologica Sinica 2011年第3期30卷 27-32页

作者： WANG Gang QIAO Fangli DAI Dejun HOU Yijun key laboratory of Data Analysis and Applications （LDAA） Key laboratory of Marine Science and Numerical Modeling （MASNUM） First Institute of Oceanography State Oceanic Administration Qingdao 266061 China institute of oceanology Chinese Academy of Sciences Qingdao 266071 China

Continuous observation in late April 2005 on the northwestern shelf of the south china sea reveals vigorous strong currents, the maximum velocity of which exceeds 3.8 m/s. The strong currents occurred around spring tide period, when the internal tide waves were also expected to be vigorous. Analysis shows that the major peaks of the current power spectrum are in low frequency band. Using a numerical method applied to the actual ocean stratification, we find that the amplitude profiles of the strong current are similar to that of the currents induced by some low-mode internal waves （at diurnal or semi-diurnal frequency）. It indicates that the temporal and spatial features of strong currents were possibly induced by low frequency internal waves.

关键词： strong current internal waves Brunt-Vaisala frequency