TSDV: A GIS tool for inspecting trawl survey data     

Fortunati  L.; Garofalo  G.; Demontis  R. 《ICES Journal of Marine Science》2002,59(1):168-178

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数字地球与海洋科学的发展   总被引：3，自引：0，他引：3  

谢仕义 《海洋技术学报》2001,20(4):66-68

本文从数字地球的概念出发，根据海洋科学的发展要求，详细论述了数字地球与海洋科学的发展关键。并提出了海洋科学的新的发展战略和配套技术的开发研究理论，从而为我国海洋事业的发展和数字地球的建立有一个协调和统一的认识观点。  相似文献   

Chemical Fluxes of Asian Rivers into Oceans and their Controlling Factors     

杨守业  李从先  刘曙光 《海洋通报(英文版)》2001,3(2)

Chemical fluxes of Asian rivers into oceans bear different regional variations. Three zones are characteristic of distinct dissolved sediment loads and yields and ionic concentration.Rivers into oceans in China play an important role in Asia because of their different chemical fluxes, among which those draining the Loess Plateau have high ionic concentration, low water discharges and dissolved sediment loads and yields.Climate, vegetation, soil and strata lithology, chemical weathering intensity and tectonic activity dominate chemical fluxes of Asian rivers into oceans, and different factors have different effects on the chemical fluxes of separate regional rivers. Rising of the Tibet Plateau also exerts an important influence on chemical compositions of rivers originating from it.  相似文献   

Algorithm for HF radar vector current measurements   总被引：1，自引：0，他引：1  

Lei Liu  Xiongbin Wu  Feng Cheng  Shaolin Yang  Hengyu Ke 《Journal of Oceanography》2007,63(1):47-66

A new algorithm is proposed, called the stream function method (SFM) for producing vector current maps from radial data measured by dual-site high frequency surface wave radar (HFSWR). In SFM, a scalar stream function is constructed under some oceanographic assumptions. The function describes the two-dimensional (2-D) ocean surface water motion and is used to obtain the distribution of vector currents. The performance of SFM is evaluated using simulated radial data, which demonstrates that SFM has advantages over typical vectorial combination methods (VCM) both in error acceptance and robustness, and excels another method based on least-squares fitting (LSF) in recovering the complicated current models. Furthermore, SFM is capable of providing the total currents based on radials from single-site radar. We also test the assumptions of horizontal non-divergence in the simulation. The new algorithm is applied to the field experiment data of Wuhan University’s ocean state measuring and analyzing radar (OSMAR), collected in the coastal East China Sea during April 11–17, 2004. Quantitative comparisons are given between radar results by three current algorithms and in-situ current meter measurements. Preliminary analysis of the vertical current shear is given based on the current meter measurements.  相似文献   

Articulated Lifting System Modeling Based on Dynamics of Flexible Multi-Body Systems     

徐妍  冯雅丽  张文明 《中国海洋工程》2007,21(4):715-722

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Unintended and perverse consequences of ignoring linkages in fisheries systems     

Degnbol  Poul; McCay  Bonnie J. 《ICES Journal of Marine Science》2007,64(4):793-797

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Migration and survival of farmed Atlantic salmon (Salmo salar L.) released from two Norwegian fish farms   总被引：1，自引：0，他引：1  

Hansen  Lars P. 《ICES Journal of Marine Science》2006,63(7):1211-1217

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Ecosystem indicators derived from satellite remotely sensed oceanographic data for the North Pacific     

Polovina  Jeffrey J.; Howell  Evan A. 《ICES Journal of Marine Science》2005,62(3):319-327

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Response-based method for determining the extreme behaviour of floating offshore platforms     

Said Mazaheri  Martine J. Downie 《Ocean Engineering》2005,32(3-4):363-393

The accurate prediction of extreme excursion and mooring force of floating offshore structures due to multi-variete environmental conditions which requires the joint probability analysis of environmental conditions for the worst case situation is still impractical as the processing of large amount of met-ocean data is required. On the other hand, the simplified multiple design criteria (e.g. the N-year wave with associated winds and currents) recommended by API known as traditional method does lead neither to the N-year platform response nor to the N-year mooring force. Therefore, in order to reduce the level of conservatism as well as uncertainties involved in the traditional method the response-based method can be used as a reliable alternative approach. In this paper this method is described. In order to perform the calculations faster using large databases of sea states, Artificial Neural Networks (ANN) is designed and employed. In the paper the response-based method is applied to a 200,000 tdw FPSO and the results are discussed.  相似文献   

Depensation, probability of fertilization, and the mating system of Atlantic cod (Gadus morhua L.)     

Rowe  Sherrylynn; Hutchings  Jeffrey A.; Bekkevold  Dorte; Rakitin  Ana 《ICES Journal of Marine Science》2004,61(7):1144-1150

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