Assessment of a NEMO-based downscaling experiment for the North-Western Mediterranean region: Impacts on the Northern Current and comparison with ADCP data and altimetry products

2011 ◽  
Vol 39 (3-4) ◽  
pp. 386-404 ◽  
Author(s):  
Y. Ourmières ◽  
B. Zakardjian ◽  
K. Béranger ◽  
C. Langlais
Keyword(s):  
Mediterranean Region ◽  
Western Mediterranean ◽  
The North ◽  
Adcp Data ◽  
North Western ◽  
Northern Current

scholarly journals Floods in the north-western Mediterranean region: presentation of the HYMEX database and comparison with pre-existing global databases

2013 ◽  
pp. 5-9 ◽  
Author(s):  
Carmen Llasat ◽  
Montserrat Llasat-Botija ◽  
Olga Petrucci ◽  
Angela Aurora Pasqua ◽  
Joan Rossello ◽  
...  
Keyword(s):  
Mediterranean Region ◽  
Western Mediterranean ◽  
Global Databases ◽  
The North ◽  
North Western

Pressure-Knapping Blade Production in the North-Western Mediterranean Region During the Seventh Millennium cal B.C.

2012 ◽  
pp. 199-217 ◽  
Author(s):  
Didier Binder ◽  
Carmine Collina ◽  
Raphaëlle Guilbert ◽  
Thomas Perrin ◽  
Oreto Garcia-Puchol
Keyword(s):  
Mediterranean Region ◽  
Western Mediterranean ◽  
The North ◽  
North Western ◽  
Blade Production

scholarly journals Tracking the Mediterranean Abyss

2016 ◽  
Author(s):  
Simona Aracri ◽  
Katrin Schroeder ◽  
Jacopo Chiggiato ◽  
Harry Bryden ◽  
Elaine McDonagh ◽  
...  
Keyword(s):  
Water Column ◽  
Seismic Waves ◽  
Western Mediterranean ◽  
The North ◽  
Deep Layers ◽  
Abyssal Circulation ◽  
Intense Activity ◽  
First Time ◽  
North Western ◽  
Northern Current

Abstract. The abyssal velocity of the Northern Current, in the north-western Mediterranean has been estimated using for the first time MERMAIDs, i.e. submarine drifting instruments that record seismic waves. In this study the Northern Current shows an intense activity even in deep layers of the water column. Through pseudo-eulerian statistics different components of the observed variability are analysed and described, revealing the turbulent nature of the Liguro-Provençal basin abyssal circulation.

scholarly journals Foraging dives of sperm whales in the north-western Mediterranean Sea

2012 ◽  
Vol 92 (8) ◽  
pp. 1799-1808 ◽  
Author(s):  
Alexandre Gannier ◽  
Estelle Petiau ◽  
Violaine Dulau ◽  
Luke Rendell
Keyword(s):  
Prey Capture ◽  
Sperm Whale ◽  
Western Mediterranean ◽  
Sperm Whales ◽  
The North ◽  
Western Mediterranean Sea ◽  
Single Animal ◽  
Components Analysis ◽  
Passive Acoustic ◽  
North Western

Oceanic odontocetes rely on echolocation to forage on pelagic or benthic prey, but their feeding ecology is difficult to study. We studied sperm whale foraging dives during summer in the north-western Mediterranean, using visual and passive acoustic observations. Clicking and creaking activities were recorded during dives of focal whales, at distances <3000 m using a towed hydrophone and DAT recorder. A total of 52 sperm whales were recorded over at least one full dive cycle. Data were obtained for 156 complete dives in total, including sequences of up to nine consecutive dives. Various dive and environmental variables were entered in multiple linear regression and principal components analysis, as well as estimated mass of whales. Creak rate was 0.80 creak/minute on average, with moderate variance. Bigger whales tended to dive longer at greater depths (as suggested by ascent durations), and emitted more creaks during a dive: 20.2 creaks/dive on average for individuals <24 tons, compared to 25.6 creaks/dive for animals >24 tons of estimated mass. For individual whales, creak rates did not vary significantly with size (range 0.78–0.80 creak/minute), but decreased with time of the day, and increased for shorter foraging phases. For different dives, higher creak rates were also observed earlier in the day, and linked to shorter foraging phases and surface durations. Although the exact significance of creak emissions (i.e. foraging attempt or prey capture) is not precisely determined, creak rates may be reliably used to quantify sperm whale foraging when single animal dives can be followed acoustically.

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