Practical Wave Modelling

1990 ◽  
pp. 201-214
Author(s):  
B. Barnouin
Keyword(s):  
Wave Modelling

scholarly journals Future Changes in Wave Conditions at the German Baltic Sea Coast Based on a Hybrid Approach Using an Ensemble of Regional Climate Change Projections

Water ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 167
Author(s):  
Norman Dreier ◽  
Edgar Nehlsen ◽  
Peter Fröhle ◽  
Diana Rechid ◽  
Laurens M. Bouwer ◽  
...  
Keyword(s):  
21St Century ◽  
Wind Wave ◽  
Regional Climate ◽  
Hybrid Approach ◽  
Wave Modelling ◽  
Long Term Changes ◽  
Mean Wave Period ◽  
Wave Conditions ◽  
Sea Coast

In this study, the projected future long-term changes of the local wave conditions at the German Baltic Sea coast over the course of the 21st century are analyzed and assessed with special focus on model agreement, statistical significance and ranges/spread of the results. An ensemble of new regional climate model (RCM) simulations with the RCM REMO for three RCP forcing scenarios was used as input data. The outstanding feature of the simulations is that the data are available with a high horizontal resolution and at hourly timesteps which is a high temporal resolution and beneficial for the wind–wave modelling. A new data interface between RCM output data and wind–wave modelling has been developed. Suitable spatial aggregation methods of the RCM wind data have been tested and used to generate input for the calculation of waves at quasi deep-water conditions and at a mean water level with a hybrid approach that enables the fast compilation of future long-term time series of significant wave height, mean wave period and direction for an ensemble of RCM data. Changes of the average wind and wave conditions have been found, with a majority of the changes occurring for the RCP8.5 forcing scenario and at the end of the 21st century. At westerly wind-exposed locations mainly increasing values of the wind speed, significant wave height and mean wave period have been noted. In contrast, at easterly wind-exposed locations, decreasing values are predominant. Regarding the changes of the mean wind and wave directions, westerly directions becoming more frequent. Additional research is needed regarding the long-term changes of extreme wave events, e.g., the choice of a best-fit extreme value distribution function and the spatial aggregation method of the wind data.

scholarly journals Nonlinear Doppler reflectometry power response. Analytical predictions and full-wave modelling

2019 ◽  
Vol 61 (4) ◽  
pp. 045010 ◽  
Author(s):  
O L Krutkin ◽  
E Z Gusakov ◽  
S Heuraux ◽  
C Lechte
Keyword(s):  
Wave Modelling ◽  
Full Wave ◽  
Power Response

Ocean to Near-Shore Wave Modelling with SWAN

2001 ◽  
Author(s):  
Nico Booij ◽  
Leo Holthuijsen ◽  
Jurjen Battjes
Keyword(s):  
Wave Modelling ◽  
Near Shore

Finite-difference strategy for elastic wave modelling on curved staggered grids

2016 ◽  
Vol 20 (1) ◽  
pp. 245-264 ◽  
Author(s):  
C. A. Pérez Solano ◽  
D. Donno ◽  
H. Chauris
Keyword(s):  
Finite Difference ◽  
Elastic Wave ◽  
Wave Modelling ◽  
Staggered Grids

scholarly journals The effect of subionospheric propagation on whistlers recorded by the DEMETER satellite – observation and modelling

2007 ◽  
Vol 25 (5) ◽  
pp. 1103-1112 ◽  
Author(s):  
O. E. Ferencz ◽  
Cs. Ferencz ◽  
P. Steinbach ◽  
J. Lichtenberger ◽  
D. Hamar ◽  
...  
Keyword(s):  
Ionospheric Plasma ◽  
Lightning Discharge ◽  
Wide Band ◽  
Satellite Observation ◽  
Guided Wave ◽  
Propagation Characteristics ◽  
Wave Modelling ◽  
Full Wave ◽  
Demeter Satellite ◽  
Guided Wave Propagation

Abstract. During a routine analysis of whistlers on the wide-band VLF recording of the DEMETER satellite, a specific signal structure of numerous fractional-hop whistlers, termed the "Spiky Whistler" (SpW) was identified. These signals appear to be composed of a conventional whistler combined by the compound mode-patterns of guided wave propagation, suggesting a whistler excited by a lightning "tweek" spheric. Rigorous, full-wave modelling of tweeks, formed by the long subionospheric guided spheric propagation and of the impulse propagation across an arbitrarily inhomogeneous ionosphere, gave an accurate description of the SpW signals. The electromagnetic impulses excited by vertical, preferably CG lightning discharge, exhibited the effects of guided behaviour and of the dispersive ionospheric plasma along their paths. This modelling and interpretation provides a consistent way to determine the generation and propagation characteristics of the recorded SpW signals, as well as to describe the traversed medium.

Circuit-based versus full-wave modelling of active microwave circuits

2017 ◽  
pp. 1-10 ◽  
Author(s):  
Branko Bukvić ◽  
Andjelija Ž. Ilić ◽  
Milan M. Ilić
Keyword(s):  
Microwave Circuits ◽  
Wave Modelling ◽  
Full Wave
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