Eastern English Channel fish assemblages: measuring the structuring effect of habitats on distinct sub-communities   总被引：1，自引：0，他引：1  

Vaz  S.; Carpentier  A.; Coppin  F. 《ICES Journal of Marine Science》2007,64(2):271-287

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Differential model of the hydrophysical fields' vertical structure in a stratified tidal flow over a shelf     

I. D. Lozovatsky  A. S. Ksenofontov 《Physical Oceanography》1995,6(1):35-41

This paper studies the influence of shelf tidal flows on the structure of surface and near-bottom turbulent boundary layers.Translated by Vladimir A. Puchkin.  相似文献   

Recent responses to changes in stocks of prey species by seabirds breeding in the southern Barents Sea   总被引：2，自引：0，他引：2  

Barrett  Robert T.; Krasnov  Yuri V. 《ICES Journal of Marine Science》1996,53(4):713-722

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Rapid visualization of plankton abundance and taxonomic composition using the Video Plankton Recorder     

Cabell S. Davis  Scott M. Gallager  Martin Marra  W. Kenneth Stewart 《Deep Sea Research Part II: Topical Studies in Oceanography》1996,43(7-8)

Traditional methods for determining spatial distributions of planktonic taxa involve net, pump, and bottle collections followed by the tedious and time-consuming task of plankton sample analysis. Thus, plankton ecologists often require months or even years to process samples from a single study. In this paper, we present a method that allows rapid visualization of the distribution of planktonic taxa while at sea. Rapid characterization of plankton distributions is essential in the dynamic physical environment, where biological and physical patterns can change quickly. Such a “sample-and-observe” capability is necessary for mapping ephemeral features (such as patches, eddies, jets, plumes) and determining appropriate locations to conduct more localized sampling, including in situ observational studies. We describe the techniques used in imaging the plankton, analyzing the video, and visualizing the data. We present an example of at-sea data analysis conducted aboard R.V. Columbus Iselin on Georges Bank in May 1994 and visualizations of the 3-dimensional distribution of selected planktonic taxa in a 2 × 2 km × 90 m volume of seawater. A video of the image processing and visualization is included on the CD-ROM accompanying this volume and is an essential part of this paper.  相似文献   

Second order wave diffraction forces and runup by finite—infinite element method     

B.Y. Li  S.L. Lau  C.O. Ng 《Applied Ocean Research》1991,13(6):270-286

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Macrobenthic community structure and disturbance assessment in Gialova Lagoon, Ionian Sea   总被引：5，自引：0，他引：5  

Koutsoubas  D.; Dounas  C.; Arvanitidis  C.; Kornilios  S.; Petihakis  G.; Triantafyllou  G.; Eleftheriou  A. 《ICES Journal of Marine Science》2000,57(5):1472-1480

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Recent events concerning Atlantic salmon escapees in the Pacific   总被引：1，自引：0，他引：1  

McKinnell  S.; Thomson  A. J. 《ICES Journal of Marine Science》1997,54(6):1221-1225

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The dynamic method of calculating currents and analysis of the vertical kinematic structure     

N. P. Bulgakov  S. N. Bulgakov 《Physical Oceanography》1996,7(6):427-435

The basic relations of the classical dyamic method have been complemented with the condition allowing for the non-monotonicity of the vertical kinematic structure. The elements of the multi-layered system of geostrophic currents have been found to correlate over depth with seawater density and hydrostatic pressure distribution. An example of the analysis of the vertical structure of currents, involving specific hydrological data, is given. Translated by Vladimir A. Puchkin.  相似文献   

Effect of shallow and narrow water on added mass of cylinders with various cross-sectional shapes     

Z.X. Zhou  Edmond Y.M. Lo  S.K. Tan 《Ocean Engineering》2005,32(10):1199-1215

The sway, heave and roll added masses of three uniform cylinders with semi-circular, rectangular and triangular cross-sectional shapes in shallow and narrow water are numerically analysed. The method is based on simulation of the potential flow induced by the cylinder's mode of motion. The effects of shallow and narrow water on added mass are analysed and presented. It is concluded that the shallow and narrow water effects on added mass depend on the different cross-section shapes of the cylinders. In particular, the water depth effect on sway added mass is stronger than that on heave added mass while the narrow water effect on sway is weaker than that on heave. The shallow water effect on added mass tends to weaken the narrow water effect. Lastly the effect of shallow and narrow water on added mass on a rectangular cylinder is the strongest while that on a triangular cylinder is the weakest.  相似文献   

Sample Disturbance in Soft and Sensitive Clays: Analysis and Assessment     

K. Nagendra Prasad  S. Triveni  T. Schanz  Late T. S. Nagaraj 《Marine Georesources & Geotechnology》2007,25(3):181-197

Despite the sophisticated methods employed to obtain high quality samples, they are prone to disturbance, due to stress release, let apart, due to sampling tools and techniques adopted. Critical reappraisal of different methods suggest that any method of sample quality assessment involving strength and deformation parameters would enable easier implementation and correct other engineering parameters for estimated sample disturbance. In this technical paper, sample disturbance index, using merely the slopes of compression paths, (representing mechanical response), in the pre- and post-yield stress regimes under odeometric loading conditions is proposed. This method is based on single oedometer test results on samples of unknown degrees of disturbance during sampling and handling. The unique feature of this approach is that the ideal rigid plastic material behavior is taken as reference. This eliminates the need for any additional experimental data or any calculations from the relationships formulated with any set of assumptions.  相似文献