... ABSTRACT Structure-from-Motion is a technique for estimating 3D structures from 2D image. Due to different refractive index of mediums, the light ray will bend during the underwater imaging process, making the perspective camera model invalid. In this paper we set a camera fixed in a glass...

... variation of wave height, energy period and corresponding wave power over a one year period. The results indicate that local shoaling and refraction plays a major role in altering the wave properties and wave power for this region and this is further quantified and discussed in details. data frame...

... ABSTRACT This paper describes the derivation and implementation of combined wave diffraction-refraction in a spectral directional wave model for coastal applications. The wave refraction is included in the total derivative of wave-action while diffraction is formulated as wave energy diffusion...

... coastal structures where the waves are subjected to the combined effects of shoaling, refraction, diffraction, reflection (total and partial) and breaking. To validate the model, computed results are compared with experimental measurements. Numerical simulations of wave conditions inside real-life...

... runup heights by the multi-conical islands. It is found that the nonlinear wave diffraction, reflection and refraction play a significant role in varying the maximum soliton runup heights on multi- conical islands. The comparatively large maximum soliton runups are generally predicted for the merged...

... to closely examine the flow characteristics such as the generation, propagation and absorption of shallow water waves. The numerical results are found to coincide quite well with the exact solution and also with experimental data. The wave refraction and shoaling due to bottom topography in coastal regions...

... commands the stratosphere and the troposphere in macro scale, whereas synoptic phenomena control the troposphere. troposphere wave prediction latitude earth surface multiplier estimation grassland topography equation refraction inland sea boundary layer wind layer weather type...

...-known mild slope equation to describe wave refraction and diffraction, and applied Finite Element Method to solve the combined effects of wave refraction-diffraction problem. The sea-bottom friction and absorption boundary was considered by Chen (1986), and using Hybrid Boundary Element Method...

... on the Shallow Water Wave Equation with the Presence of Currents M.C. Lin, C.M. Hsu and C.L. Ting National Ta iwan University, Taipei, Taiwan, Ch ina ABSTRACT The complicated phenomena of refraction and diffraction of wave with the presence of currents were studied numerically. A set of governing equations...

... to the amplitude of oscillation far greater than incident wave. Hwang & Tuck (1970) used a boundary integral method to calculate oscillation in harbors of constant depth and arbitrary shape. Berkhoff (1972) derived the well-know mild-slope equation to describe wave refraction and diffraction, and applied...

... model upstream oil & gas scarsi refraction ABSTRACT A wave propagation spectral model to second order of approximation is suggested, which provides the actual directional spectrum in decreasing depths, starting from the corresponding one in deep water. The model implements the procedure...

... performed much(Hagiwara, 1986; Baba, 1987; Baba,1988; Kiyokawa, 1989). velocity potential seismic wave field equation two-layered medium calculation frequency reservoir characterization refraction marine sediment water depth thickness seaquake force resonant frequency sea bottom...

... them out for all of the European coastline of wave power interest. calculation onshore wave energy resource spectra sustainability social responsibility wave energy utilisation ocean energy reflection grid point wave climate coastline equation diffraction refraction sustainable...

... ABSTRACT The objective of this paper is to provide a summary of the development of governing equations for wave diffraction and refraction in ocean of shallow water. The nonlinear mild-slope equations for the Fourier components of weakly nonlinear shallow-water waves as well as the parabolic...

... by utilize artificial concrete weights and sliding resistance between pipe anq soiL Wave parameters are calculated by the Airy's Linear Theory and modified by considering the effect of sea bed such as shoaIing, refraction and breaking. Then the computation of hydrodynamic forces are based on the two-term...

... ABSTRACT Low velocity currents will influence the refraction of solitary waves over slowly varying topography. As derived in the paper, the effects of currents on wave refraction can be described as an initial-boundary value problem of the two-dimensional KdV equation with currents...

... in the Azores islands for the construction of a wave power plant. Results of offshore and shoreline measurements are shown. The comparision is presented between offshore and shoreline spectra, as well as computed onshore spectra using a computer irregular wave refraction model. This revealed several shallow...