منابع مشابه
Dynamical partitioning of directional ocean wave spectra
Directional wave spectra generally exhibit several peaks due to the coexistence of wind sea generated by local wind conditions and swells originating from distant weather systems. This paper proposes a new algorithm for partitioning such spectra and retrieving the various systems which compose a complex sea-state. It is based on a sequential Monte-Carlo algorithm which allows to follow the time...
متن کاملThe Microwave Measurement of Ocean-wave Directional Spectra
When we attempt to gain knowledge about the temporal and spatial variations of sea-surface displacements caused by waves, various levels of information may be specified. The most complete knowledge of sea-surface displacements would be obtained from two-dimensional images taken successively in time. Resolutions and sampling intervals in both space and time could be adjusted to control the amoun...
متن کاملRealistic simulation of ocean surface using wave spectra
We present a method to simulate ocean surfaces away from the coast, with correct statistical wave height and direction distributions. By using classical oceanographic parametric wave spectra, our results fit real world measurements, without depending on them. Since wave spectra are independent of the ocean model, Gerstner parametric equations and Fourier transform method can be used with them. ...
متن کاملContemplating Ocean Wave Measurements
This is a personal contemplation on the state of ocean wave measurement, historically, and with an eye toward the future. The conceptual basis which leads to the conventional wave measuring instruments has been in practice for over six decades which is basically single point observations of three-dimensional waves. We need new conceptual advancement and new instrumentation to rejuvenate our res...
متن کاملA nonlinear mapping from dual−polarization SAR image spectra to Ocean wave spectra
It is well known that ocean waves are an important component of upper ocean dynamics. The synthetic aperture radar (SAR) has been widely used to measure ocean surface wave spectra from space since the Seasat satellite was launched in 1978. Many papers have been published dealing with the imaging mechanism and retrieval methodology. Schuler and Lee proposed a method to improve the measurement of...
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ژورنال
عنوان ژورنال: Coastal Engineering Proceedings
سال: 1984
ISSN: 2156-1028,0589-087X
DOI: 10.9753/icce.v19.45