Numerical Simulation of Dynamic Response of Supple Nets     

朱立新梁振林  黄六一赵芬芳 《中国海洋工程》2006,20(3):443-456

1 .Introduction Owing to the decline of capture fisheries andsaturation of traditional inshorefarms ,sea cage cul-ture as a newtype of aquaculture is developingrapidlyin China .However ,cage culture is a highriskoperation.The practice is vulnerable to natural hazards ,such as strong tides ,storms and typhoons .So,it is necessaryto assess the behavior of a sea cage exposedto waves and current before the designandinstallation of the structure . Computer simulation,due to its many advantages ,ha…  相似文献   

Molecular phylogenetic analysis of sulfate-reducing bacteria from deep sediment layers of the tropical West Pacific warm pool     

LUO Zhuhu  YE Dezan  HUANG Xiangling 《海洋学报(英文版)》2006,25(3):98-107

1IntroductionThe tropical West Pacific warm pool(TWP-WP),which spans an area roughly between10°Nto10°S of the equator from Indonesia to the dateline,has the world’s warmest sea surface temperature ofbeing greater than29℃.With the increase of recog-niz…  相似文献   

基于GIS的柘林湾生态信息系统     

黎裕成  陈志远  黄长江  谢文勇  杜虹 《台湾海峡》2005,24(2):216-222

柘林湾生态信息系统以ArcGIS为开发平台，采用客户端／服务器的体系结构，基于ArcObjects的组件式二次开发而成，实现了柘林湾的三维实景模拟、生态数学模型与GIS的有效集成、分析评价结果与地理空间数据相结合等功能，具有可视化、智能化、易扩展、安全实用等特点．该系统的建成．极大地提高了柘林湾生态信息的现代化管理水平，并为制定柘林湾的污染防治与生态环境保护策略提供了强有力的支持．  相似文献   

南海季风型海-气耦合模态的时空特征及其与中国夏季降水的关系   总被引：2，自引：0，他引：2  

黄菲  王宏  戴平 《中国海洋大学学报(自然科学版)》2007,37(3):351-356

使用NCEP/NCAR的海表温度(SST)、海面10 m风场的月平均再分析资料,用联合SVD(CSVD)的方法研究了不同季节南海的海气耦合模的时空分布特征及其与中国夏季降水的关系。通过对不同季节的海-气耦合模的年际变化特征的分析。结果发现:第一模态为最显著模态,模态协方差贡献比在四季均超过80%,空间上SST表现为与南海等深线相一致的海盆模态,风场上主要表现为弱的冬季风或弱的夏季风,各个季节的海-气耦合模态都主要反映了SST-蒸发-风反馈这样1种正反馈的海-气相互作用过程,而且冬季风期间这种相互作用要更强烈些。时间系数均主要表现为一致的上升趋势和1976年前后的年代际突变,以及与ENSO相关的年际变化特征。冬、夏季弱的季风对应暖SST的特征体现了这种耦合模态隔季相关的特征,都对应夏季华南旱(涝)、江南涝(旱),华北、山东半岛旱(涝),东北涝(旱)这样1种波列状的旱涝相间分布。  相似文献   

压力传感器的自动标定技术     

王莉娜  赵先龙  阮锐  严晓明 《海洋测绘》2007,27(4):78-80

针对压力测量设备生产和维护过程中,对关键部件压力传感器标定处于手工操作状态、效率低、操作人员不易掌控、标定结果处置复杂的现状,开发了针对压力传感器的自动标定技术。该技术将计算机控制、智能化、曲线拟合和误差分析引入到压力传感器的标定过程中,大幅度提高了标定的效率和可靠性。经此技术标定过的压力探头,在使用中具有互换性,减轻了数据后处理工作的难度。  相似文献   

PROBABILITY CHARACTERISTICS OF WAVE AND WAVE PRESSURES IN FRONT OF VERTICAL BREAKWATER     

黄培基  赵炳来 《海洋学报(英文版)》1985,4(3):490-501

The distribution of wave height in front of a vertical breakwater, the range of wave pressure fluctuation at different subsurface levels, and the wave periods have shown that they are practically invariable with depth and can be determined theoretically. The distribution of crest and trough of total pressures is the same as that of wave height. As far as different subsurface levels are concerned, the spectral constitution of wave pressure field and the regularity of attenuation of spectral components are analyzed at the vertical breakwater, and a new expression describing the equilibrium range of wave pressure spectrum obtained.  相似文献   

壳聚糖酶高产菌株的筛选和发酵条件的研究   总被引：6，自引：0，他引：6  

孙玉英  韩宝芹  刘万顺  张继泉  姚如永  彭睿 《中国海洋大学学报(自然科学版)》2007,37(2):266-272

从采集的土样中分离到1株产壳聚糖酶能力较强的菌株OU01,并对OU01进行了16S rDNA序列、形态及生理生化鉴定分析。16S rDNA序列分析表明该菌属于微杆菌属;该菌的形态特征与生理生化鉴定结果表明该菌与Microbacteriumsp.的相似性最高;因此将其初步鉴定为微杆菌属(Microbacterium)。同时对该菌的发酵条件进行了初步研究:该菌的最适培养基组成为(g/L):chitosan 10,(NH4)2SO420,MgSO4.7H2O 1.3,K2HPO4.3H2O 1.4,Glucose 1,Yeast extract 3,NaCl 5,起始pH=6.30。最适发酵温度为30℃,最佳发酵时间为96 h,在上述最优条件下,该菌株产酶达到118 U/mL。Microbacteri-umsp.OU01菌株为壳聚糖酶的研究和应用提供了新的来源。  相似文献   

One new species of free-living marine nematodes (Enoplida,Anticomidae, Cephalanticoma) from the Huanghai Sea   总被引：1，自引：0，他引：1  

HUANG Yong  ZHANG Zhinan 《海洋学报(英文版)》2007,26(3):84-89

One new species of free-living marine nematodes Cephalanticoma filicaudata sp. nov. from the Huanghai Sea, China is described and illustrated. Cephalanticoma filicaudata sp. nov. is characterized by well developed cephalic capsule, three teeth at the anterior of oesophagus, excretory pore opens posterior to cervical setae, only two cervical setae per file, body length longer than 5 200 μm, tail long and no ventral-lateral seta between the supplement and the cloacal opening. Types are deposited in the College of Marine Life Sciences, Ocean University of China.  相似文献   

STWAVE模型在多岛屿区域波浪要素计算中的应用     

黄君宝  吴辉  赵鑫 《海洋技术学报》2007,26(3):52-54

我国常用的风推浪计算方法在多岛屿区域波浪要素计算中具有一定局限性。论文通过不同方法计算的波浪要素计算结果的比较,认为STWAVE模型在满足计算精度的前提下,操作简单,方法简便,在多岛屿区域波浪要素计算中具有较大的应用、推广价值。  相似文献   

Phylogenetic analysis of Pectinidae(Bivalvia) based on the ribosomal DNA internal transcribed spacer region     

HUANG Xiaoting  BI Ke  HU Jingjie  HU Xiaoli  BAO Zhenmin 《海洋学报(英文版)》2007,26(6):83-90

The ribosomal DNA internal transcribed spacer (ITS) region is a useful genomic region for understanding evolutionary and genetic relationships. In the current study, the molecular phylogenetic analysis of Pectinidae (Mollusca: Bivalvia) was performed using the nucleotide sequences of the nuclear ITS region in nine species of this family. The sequences were obtained from the scallop species Argopecten irradians, Mizuhopecten yessoensis, Amusium pleuronectes and Mimachlamys nobilis, and compared with the published sequences of Aequipecten opercularis, Chlamys farreri, C. distorta, M. varia, Pecten maximus, and an outgroup species Perna viridis. The molecular phylogenetic tree was constructed by the neighbor-joining and maximum parsimony methods. Phylogenetic analysis based on ITS1, ITS2, or their combination always yielded trees of similar topology. The results support the morphological classifications of bivalve and are nearly consistent with classification of two subfamilies (Chlamydinae and Pectininae) formulated by Waller. However, A. irradians, together with A. opercularis made up of genera Amusium, evidences that they may belong to the subfamily Pectinidae. The data are incompatible with the conclusion of Waller who placed them in Chlamydinae by morphological characteristics. These results provide new insights into the evolutionary relationships among scallop species and contribute to the improvement of existing classification systems.  相似文献