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Researchers speed up analysis of Arctic ice and snow data through artificial intelligence（图）
Arctic ice snow data through artificial intelligenc
2021/1/28
Researchers at the University of Maryland, Baltimore County have developed a technique for quicker analysis of extensive data from Arctic ice sheets to gain knowledge of patterns and trends.Over the y...
Need for speed may contribute to dolphin and whale strandings
contribute dolphin whale strandings
2017/3/30
Dolphins swimming at top speed use more than twice the amount of energy per fin beat than dolphins swimming at a more relaxed pace, according to a study by scientists at UC Santa Cruz. The researchers...
Influence of Forward Speed on the Lateral Vibration of a Slender Structure in Water
forward speed vibration in water slender structure fluid-structure interaction
2011/9/9
In this paper, the effects of forward speed on the lateral vibration of a slender structure in an infinite fluid are considered. By equating the bending stress of the structure with the hydrodynamic f...
A Feasibility Study on a New Trimaran PCC in Medium Speed –Performance in Still Water and Strong Wind
trimaran Pure Car Carrier EHP drift angle speed reduction
2011/9/9
In the present paper, a new trimaran Pure Car Carrier (PCC) is proposed and a feasibility study on the ship is carried out. In this study, first, the effective horse power (EHP)/car of the PCC running...
Wind-Generated Current and Phase Speed of Wind Waves
Wind-Generated Current Phase Speed Wind Waves
2009/4/3
Measurements of drift were made in a wind and wave facility at different elevations below the mean water level. The drift profiles were obtained for reference wind speeds, Ur=3.1, 5.7 and 9.6 m sec...
In situ measurements of surface tension obtained by R.V. Gauss under coastal (North Sea of the Island of Sylt) and by R.V. Meteor under open sea conditions (GATE area) are Compared with time variation...
Optimal Power-Law Description of Oceanic Whitecap Coverage Dependence on Wind Speed
Optimal Power-Law Description Oceanic Whitecap Coverage Dependence Wind Speed
2009/2/19
The optimal power-law expression for the dependence of oceanic whitecap coverage fraction W on 10 m elevation wind speed U as determined by ordinary least squares fitting applied to the combined white...
The Effects of the Variations In Sea Surface Temperature and Atmospheric Stability in the Estimation of Average Wind Speed by SEASAT-SASS
Sea Surface Temperature Atmospheric Stability Average Wind Speed SEASAT-SASS
2009/1/19
Wind speeds from the scatterometer (SASS) on the ocean observing satellite SEASAT averaged over 2° latitude by 2° longitude and a 92-day period are compared with wind speeds from ship reports in the w...
A Mechanism for the Increase of Wind Stress (Drag) Coefficient with Wind Speed over Water Surfaces：A Parametric Model
Wind Stress (Drag) Coefficient Wind Speed Water Surfaces Parametric Model
2009/1/10
A mechanism is proposed for a physical explanation of the increase in wind stress (drag) coefficient with wind speed over water surfaces. The formula explicitly incorporates the contribution of both w...
Turbine speed control system based on a fuzzy-PID
turbine speed control system fuzzy control PID control
2011/9/14
The flexibility demand of marine nuclear power plant is very high,the multiple parameters of the marine nuclear power plant with the once-through steam generator are strongly coupled,and the normal PI...
The Behavior of the Bulk——Skin Sea Surface Temperature Difference under Varying Wind Speed and Heat Flux
Bulk——Skin Sea Surface Temperature Heat Flux Wind Speed
2008/12/10
The observed and predicted response of the bulk – skin sea surface temperature difference (δT) to changes in the wind speed and net heat flux is analyzed. Observations of δT from the northern Atlantic...
The Speed of Observed and Theoretical Long Extratropical Planetary Waves
Theoretical Long Extratropical Planetary Waves Rossby waves
2008/11/26
Planetary or Rossby waves are the predominant way in which the ocean adjusts on long (year to decade) timescales. The motion of long planetary waves is westward, at speeds 1 cm s−1. Until recent...
The Effect of Bottom Topography on the Speed of Long Extratropical Planetary Waves
Bottom Topography Speed of Long Extratropical Planetary Waves
2008/7/22
This paper examines how slowly varying topography induces changes in all aspects of long planetary wave propagation, including phase speed and surface signature, through steering effects. The approach...
Recent tests of all generations of numerical wave models indicate that extreme wave heights are significantly underpredicted by these models. This behavior is consistent with the finding by Ewing and ...
An Improved Bound for the Complex Phase Speed of Baroclinic Instability
Complex Phase Speed Baroclinic Instability
2008/7/4
An improved bound is obtained for the radius of the semicircle in the complex plane containing the complex phase speed of baroclinically unstable plane wave disturbances. In the limit of long waves, t...