eastern mediterranean sea
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2022 ◽  
Vol 48 (1) ◽  
pp. 15-20
Author(s):  
Kimonas Koemtzopoulos ◽  
Styliani Adamantopoulou ◽  
Panagiotis Dendrinos ◽  
Anastasia Komnenou ◽  
Eleni Tounta ◽  
...  

Check List ◽  
2022 ◽  
Vol 18 (1) ◽  
pp. 1-9
Author(s):  
Lisa Ah Shee Tee ◽  
Daneshwar Puchooa ◽  
Chandani Appadoo ◽  
Vishwakalyan Bhoyroo

To date, 179 species belonging to the gastropod infraclass Euthyneura are known from Mauritius. We report for the first time from Mauritius the chromodorid nudibranch, Hypselodoris infucata (Rüppell & Leuckart, 1830), based on 47 sites surveyed over 17 months. This species was previously known from the eastern Mediterranean Sea, Indo-Pacific Ocean, and Western Indian Ocean. We observed it in Mauritius at Bain des Dames near a shipwreck under coral rubble. Considering the small size and camouflage behavior of some nudibranch species, additional fieldwork will likely add others species unknown from the islands.


Climate ◽  
2022 ◽  
Vol 10 (1) ◽  
pp. 2
Author(s):  
Flora E. Karathanasi ◽  
Takvor H. Soukissian ◽  
Daniel R. Hayes

The investigation of wave climate is of primary concern for the successful implementation of offshore aquaculture systems as waves can cause significant loads on them. Up until now, site selection and design (or selection) of offshore cage system structures on extended sea areas do not seem to follow any specific guidelines. This paper presents a novel methodology for the identification of favorable sites for offshore aquaculture development in an extended sea area based on two important technical factors: (i) the detailed characterization of the wave climate, and (ii) the water depth. Long-term statistics of the significant wave height, peak wave period, and wave steepness are estimated on an annual and monthly temporal scale, along with variability measures. Extreme value analysis is applied to estimate the design values and associated return periods of the significant wave height; structures should be designed based on this data, to avoid partial or total failure. The Eastern Mediterranean Sea is selected as a case study, and long-term time series of wave spectral parameters from the ERA5 dataset are utilized. Based on the obtained results, the most favorable areas for offshore aquaculture installations have been identified.


Author(s):  
Y Garbatov ◽  
N Almany ◽  
M Tekgoz

The objective of this work is to analyse the operational behaviour of an offshore multipurpose support vessel designed to operate in the Eastern Mediterranean Sea. First, the seakeeping analysis is performed in a regular wave condition for different heading angles estimating heave and pitch motions through the strip theory. After that, the effects of the vertical acceleration on the bow, occurrence of slamming or hydrodynamic impact of the hull on the surface of the water; wetted deck, occurrence or invasion of water on the deck of the vessel and propeller emersion, motion sickness and wave-induced additional resistance are analysed. The present analysis is extended in an irregular sea condition, and the estimated seakeeping criteria are compared to the acceptable levels. In defining the most suitable operational mode of the offshore support vessels, multi-criteria decision techniques and probabilistic approach are employed to perform an adequate evaluation of the seakeeping performance accounting for different hazardous events through the service life.


2021 ◽  
Author(s):  
Foivos A. Mouchlianitis ◽  
Georgia Kalaitzi ◽  
Periklis Kleitou ◽  
Ioannis Savva ◽  
Demetris Kletou ◽  
...  

2021 ◽  
Vol 173 ◽  
pp. 113024
Author(s):  
Evelyn Vetsis ◽  
Ioanna Kalantzi ◽  
Spiros A. Pergantis ◽  
Lambros Kokokiris ◽  
Ioannis Karakassis

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