Exploring RPAS potentiality using a RGB camera to understand short term variation on sandy beaches

CATENA ◽  
2022 ◽  
Vol 210 ◽  
pp. 105949
Author(s):  
R.M. Gonçalves ◽  
T.F. Holanda ◽  
H.A.A. Queiroz ◽  
P.H.G.O. Sousa ◽  
P.S. Pereira
Author(s):  
Dilan Rathnayaka ◽  
Yoshiaki Kuriyama ◽  
Yoshimitsu Tajima

Longshore bars are a common site in sandy beaches which is influential on currents, morphology variation and the marine eco system. Longshore bar reacts to the variation of environmental factors and wave properties like wave height, water depth, wave period, wave skewness and it tends to move seaward or shoreward while changing its amplitude. According to Lippmann and Holman, (1990) short term bar migration has been triggered when the wave height or the wave height to water depth ratio are large. Elgar et al. (2001) has shown that short term seaward bar migration was caused by velocity skewness, undertow velocity and acceleration skewness. Influence of the wave breaking on the seaward bar migration has been identified as minimum according to Sallenger and Howd (1989).


2002 ◽  
Vol 34 (5) ◽  
pp. 577-584 ◽  
Author(s):  
Marja Maljanen ◽  
Pertti J. Martikainen ◽  
Heikki Aaltonen ◽  
Jouko Silvola

2015 ◽  
Vol 105 (5) ◽  
pp. 232-236 ◽  
Author(s):  
Raymond Guiteras ◽  
Amir Jina ◽  
A. Mushfiq Mobarak

A burgeoning “Climate-Economy” literature has uncovered many effects of changes in temperature and precipitation on economic activity, but has made considerably less progress in modeling the effects of other associated phenomena, like natural disasters. We develop new, objective data on floods, focusing on Bangladesh. We show that rainfall and self-reported exposure are weak proxies for true flood exposure. These data allow us to study adaptation, giving accurate measures of both long-term averages and short term variation in exposure. This is important in studying climate change impacts, as people will not only experience new exposures, but also experience them differently.


2001 ◽  
Vol 163 (2) ◽  
pp. 356-361 ◽  
Author(s):  
CHRISTIAN SCHINDLER ◽  
NINO KÜNZLI ◽  
JEAN-PIERRE BONGARD ◽  
PHILIPPE LEUENBERGER ◽  
WERNER KARRER ◽  
...  

Epidemiology ◽  
2004 ◽  
Vol 15 (4) ◽  
pp. S17-S18
Author(s):  
Lars Modig ◽  
Kurt Boman ◽  
Bertil Forsberg ◽  
Jan-Håkan Jansson ◽  
Jörn Nielsen ◽  
...  

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