it is well known that, contaminant transportation is a major problem in coastal zones and has to be faced when coastal structures are being planned. sea pollution not only causes environmental damage, but also impacts quality and population of sea resources. oil is the most important pollutant, pollutants emanating from industries, ships, drilling and exploration in the seabed, ship sewage, tox...

We present evaluations of two-dimensional surface current fields based on quantitative comparisons of satellite images with numerical model results provided by the German Federal Maritime and Hydrographic Agency (BSH). Earlier studies have shown that multisensor data can be used to derive sea surface. However, a quantitative evaluation of the resulting vector fields is difficult, due to the low...

Subtropical western boundary currents are warm, fast-flowing currents that form on the western side of ocean basins. They carry warm tropical water to the mid-latitudes and vent large amounts of heat and moisture to the atmosphere along their paths, affecting atmospheric jet streams and mid-latitude storms, as well as ocean carbon uptake1–4. The possibility that these highly energetic currents ...

Improved global mean sea level is obtained by combining two datasets: large-scale mean sea level based on measurements of twin-satellite mission GRACE and mesoscale sea level tilt derived from the momentum balance as seen in drifter, satellite altimeter and wind data. Hybrid product reveals complex structures of main currents even after averaging over 10 years and shows their places in the larg...

This paper is concerned with the study of nonlinear oscillations in servotracking control systems for the teleoperation of ROVs subject to strong currents and harmonic waves. Particularly, the case of variable cable length during tactics on the sea bottom such as sea bottom scanning and systematic grab sampling are analyzed. The route to chaos from predictable period-one oscillations is studied...

In this study, we investigate wave-currents interaction for the first time in Black Sea, implementing a coupled numerical system based on ocean circulation model NEMO v4.0 and third-generation wave WaveWatchIII v5.16. The scope is to evaluate how waves impact surface dynamics, through assessment of temperature, salinity currents. We provide also some evidence way currents may sea-state. physica...

High-Frequency (HF) radars measure the ocean surface currents at various spatial and temporal scales. These include tidal currents, wind-driven circulation, densitydriven circulation and Stokes drift. Sequential assimilation methods updating the model state have been proven successful to correct the density-driven currents by assimilation of observations such as sea surface height, sea surface ...

A three-dimensional Regional Ocean Modeling System is used to study the seasonal water circulations and transports of the Southern South China Sea. The simulated seasonal water circulations and estimated transports show consistency with observations, e.g., satellite altimeter data set and re-analysis data of the Simple Ocean Data Assimilation. It is found that the seasonal water circulations ar...

Mapping the mesoscale surface velocity stream function by combining estimates of surface height from satellite altimetry and surface currents from sequential infrared (sea-surface temperature) imagery using optimal interpolation is described. Surface currents are computed from infrared images by the method of maximum crosscorrelations (MCC) and are combined with altimeter sealevel anomaly data ...

Eight major tidal constituents in the Sea of Okhotsk have been investigated using a numerical solution of tidal equations on a 59 space grid. The tides are dominated by the diurnal constituents. Diurnal tidal currents are enhanced in Shelikhov Bay and Penzhinskaya Guba, at Kashevarov Bank, in proximity to the Kuril Islands and at a few smaller locations. The major energy sink for diurnal tides ...