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Register a new userMonitoring continuity of eddies` characteristics and trajectory in the eastern Levantine sub-basin
متابعة رصد مسار و خصائص الدوامات البحرية في شرق الليفانتاين
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نجوى حمد( باحث )
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تمّ في هذا البحث، و بالاعتماد على تحليل صور حديثة (أيلول 2015 - تشرين الثاني 2016) للأقمار الصناعية من النوع SST متابعة رصد مسار و خصائص الدوامات البحرية في منطقة شرق الليفانتاين, أي على طول الشاطئ السوري و في المناطق المجاورة له جنوبا" و شمالا".
In this study, SST satellite images analysis (from September 2015 to November 2016) is focalised on the monitoring of the mesoscale eddies in the eastern Levantine subbasin (at the Syrian coasts as well as the neighboring coasts).
References used
ALHAMMOUD, B., BERANGER, K., MORTIER, L., CREPON, M., and DEKEYSER, I. 2005- Surface circulation of the Levantine Basin: Comparison of model results with observations. progresse in Oceanogr., Vol. 66. 299-320
HAMAD, N., MILLOT, C., TAUPIER-LETAGE, I. and SAID, M. 2004 - The surface circulation in the eastern basin of the Mediterranean Sea. Rapp. Comm. Int.Mer Medit., CIESM congress Barcelona, Vol. 37. 106
HAMAD, N., MILLOT, C., and TAUPIER-LETAGE, I. 2005 - A new hypothesis about the surface circulation in the eastern basin of the Mediterranean Sea. progresse in Oceanogr., Vol. 66 (2-4). 287-298
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The eddies at the Egyptian and the Middle East coasts are generated by the instability of the surface circulation (AW: Atlantic Water). For describing these eddies, a lot of satellite images (SST: Sea Surface Temperature) have been treated and analyz
ed at the Levantine sub-basin. This study inferred that there is an approchement in the eddies´ trajectory in both south west and south east of the Levantine sub-basin, where most eddies tend to separate from AW towards off sea. While eddies in the south east of the Levantine develop faster than that in the south west.
SST satellite images analysis has showed many
characteristics for a lot of mesoscale eddies in the Eastern basin
of the Mediterranean Sea. In this study, the SST analysis is
focalised on the mesoscale eddies` formation at the Syrian coasts.
We are also interested by their characteristics for their influences
on the marine environment .
Yarmouk basin is considered one of the important basin in Syria due to its
economical contribution in the total national production of the country.
Also water plays a vital role in this effective activity of the economical
development, the purpose
of this research is to study the pollution in the southwest
area inYarmouk basin on three levels: chemical, chemi-toxical and the
Bacteriological.
The study was done on three different sites which are: the outlet of Almzereeb
lake, Zeizoun spring, Daael Al-kadeem well. The results were as
follows:
The rates of the concentration of both the ammonium and BOD in Zeizoun
spring and Al-mzereeb lake high, where they exceeded the allowed limits in the
drinking water of Zeizoun spring. But they remained within the allowed rates
in the irrigation stander of Al-mzereeb lake, while there wasn’t any remarkable
rising for such ions in the well of Daael Al-kadeem.
In This study it has been uses a network for monitoring the pollution with organochlorine pesticides in There marine stations at Lattakia coast: Fishing port, AfamiaCoast, High Institute Of Marine Research Coastusing Cages contained species of musse
lswitch are filter feeders Brachidontes varibilis. Samples had been collected from Lattakia coast.
The results showed a great efficiency of the made network for monitoring the organic pollution in marine environment. It has been recorded a concentration of DDTs is accumulated lower than 2ng/g , Endosulfane and HCB is lower than 1 ng/g too. The results showed that the HCH compounds is dominant in all stations.organochlorine pesticides is accumulated mostly in the biota of station Fishing port, Afamia Coast
Detailed sedimentary study of the Southern section of the Syrian Continental shelf (N 35.16022 E 35.92712: N 34.71354 E 35.94267) has been carried out in order to determine the sediment nature and distribution. The study of coastal sandy samples (fro
m beach to 2m water depth) revealed variation in the sand colours from place to place. This indicates that there are many sources for coastal sand mostly derived from the hinterlands. Six sediment sorting types were identified along the continental shelf and these are: Sand; Sandy Mud; Slightly Gravelly Sand; Slightly Gravelly Muddy Sand; Slightly Gravelly Sandy Mud; and Gravel. The textural studies clearly establish that the sediments are of medium grain size, moderately well sorted, very negatively skewed and mesokurtic. These parameters confirm that the sediments were deposited under moderate to high energy conditions. These conditions vary from place to another according to the place of deposition and the nature of the source material on one hand and the severity of the kinetic energy namely ocean currents, marine eddies, waves and tides on the other hand.
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