Storm Impact on the Coastal Geomorphology and Current Field by Wave Field Image Sequences

2012 ◽  
pp. 34-64
Author(s):  
Stylianos Flampouris ◽  
Joerg Seemann ◽  
Christian Senet ◽  
Friedwart Ziemer
Keyword(s):  
Wave Field ◽  
Image Sequences ◽  
Coastal Geomorphology ◽  
Current Field ◽  
Storm Impact

Swell Propagation through Submesoscale Turbulence

2019 ◽  
Vol 49 (10) ◽  
pp. 2615-2630 ◽  
Author(s):  
Pieter B. Smit ◽  
Tim T. Janssen
Keyword(s):  
Wave Field ◽  
Geometrical Optics ◽  
Surface Flow ◽  
Geometrical Spreading ◽  
Current Field ◽  
Wave Statistics ◽  
Scattering Effects ◽  
Diffusive Term ◽  
The Mean ◽  
Theoretical Results

AbstractThe propagation of ocean swells from generating regions to remote coastlines is affected by submesoscale turbulence in the surface flow field. The presence of submesoscale velocity variations results in random scattering of wave rays. While the interactions with these flow fields are weak, cumulative effects over oceanic scales are significant and result in observable changes in the wave field. Using geometrical optics and statistical mechanics we derive a framework to express these scattering effects on the mean wave statistics directly in terms of the variance spectrum of the submesoscale current field. The theoretical results are presented in Lagrangian and Eulerian forms, where the latter takes the form of a radiative transport equation augmented with a diffusive term in directional space. The theoretical results are verified through Monte Carlo simulations with a geometrical optics model. We show that including submesoscale scattering on ocean wave evolution can explain observed delays in swell arrivals, accelerated wave height decay, and much larger directional spreading of the wave field than predicted by geometrical spreading alone.

Wind- and Wave-Field Measurements Using Marine X-Band Radar-Image Sequences

2005 ◽  
Vol 30 (3) ◽  
pp. 534-542 ◽  
Author(s):  
H. Dankert ◽  
J. Horstmann ◽  
W. Rosenthal
Keyword(s):  
Wave Field ◽  
Field Measurements ◽  
Image Sequences ◽  
Radar Image ◽  
X Band

Migration, Gender and Visual Culture:

MedienJournal ◽  
2017 ◽  
Vol 37 (3) ◽  
pp. 32-44 ◽  
Author(s):  
Ksenija Vidmar Horvat
Keyword(s):  
Cultural Studies ◽  
Visual Culture ◽  
Critical Angle ◽  
Visual Representations ◽  
Public Culture ◽  
Migration Studies ◽  
New Paradigm ◽  
Current Field ◽  
Shared Interest ◽  
European Migration

 This paper investigates visual representations of migrants in Slovenia. The focus is on immigrant groups from China and Thailand and the construction of their ‘ethnic’ presence in postsocialist public culture. The aim of the paper is to provide a critical angle on the current field of cultural studies as well as on European migration studies. The author argues that both fields can find a shared interest in mutual theoretical and critical collaboration; but what the two traditions also need, is to reconceptualize the terrain of investigation of Europe which will be methodologically reorganized as a post- 1989 and post-westernocentric. Examination of migration in postsocialism may be an important step in drawing the new paradigm.

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