scholarly journals Estimation of geostrophic current in the Red Sea based on Sea level anomalies derived from extended satellite altimetry data

2018 ◽  
Author(s):  
Ahmed Mohammed Taqi ◽  
Abdullah Mohammed Al-Subhia ◽  
Mohammed Ali Alsaafani
Keyword(s):  
Sea Level ◽  
Red Sea ◽  
Winter Season ◽  
Geostrophic Current ◽  
Grid Data ◽  
The West ◽  
Geostrophic Currents ◽  
Eastern Side ◽  
Sea Level Anomalies ◽  
Anticyclonic Eddies

Abstract. The geostrophic currents data near the coast of the Red Sea has a large gap. Due to that the sea level anomaly (SLA) data of Jason-2 has been reprocessed and extended towards the coast of the Red Sea and merged with AVISO data at the center of the Red Sea. The processing has been applied to build a grid data to achieve best results for the SLA and geostrophic current. The results obtained from the new extended data at the coast are more consistent with the observed data hence geostrophic current calculation. The estimated geostrophic current match well with that estimated for observed CTD data. The pattern of SLA distribution and geostrophic currents are divided into two seasons; Winter season extends from October to May and Summer from June to September. The geostrophic currents along the eastern Red Sea flow toward north and southward along the west coast. This flow is modified with the presence of the cyclonic and anticyclonic eddies, which are more concentrated at the central and northern side of the Red Sea. The study has shown anticyclonic eddies (AE) on the eastern side of the Red Sea, while cyclonic eddies (CE) on the west side during Winter. During Summer the (CE) are along the eastern side and (AE) along the western side.

scholarly journals Estimation of geostrophic current in the Red Sea based on sea level anomalies derived from extended satellite altimetry data

Ocean Science ◽  
2019 ◽  
Vol 15 (3) ◽  
pp. 477-488 ◽  
Author(s):  
Ahmed Mohammed Taqi ◽  
Abdullah Mohammed Al-Subhi ◽  
Mohammed Ali Alsaafani ◽  
Cheriyeri Poyil Abdulla
Keyword(s):  
Sea Level ◽  
Red Sea ◽  
Current Data ◽  
Western Coast ◽  
Geostrophic Current ◽  
Geostrophic Currents ◽  
The North ◽  
Sea Level Anomalies ◽  
Western Side ◽  
Anticyclonic Eddies

Abstract. Geostrophic current data near the coast of the Red Sea have large gaps. Hence, the sea level anomaly (SLA) data from Jason-2 have been reprocessed and extended towards the coast of the Red Sea and merged with AVISO data at the offshore region. This processing has been applied to build a gridded dataset to achieve the best results for the SLA and geostrophic current. The results obtained from the new extended data at the coast are more consistent with the observed data (conductivity–temperature–depth, CTD) and hence geostrophic current calculation. The patterns of SLA distribution and geostrophic currents are divided into two seasons: winter (October–May) and summer (June–September). The geostrophic currents in summer are flowing southward over the Red Sea except for narrow northward flow along the east coast. In winter, currents flow to the north for the entire Red Sea except for a small southward flow near the central eastern and western coast. This flow is modified by the presence of cyclonic and anticyclonic eddies, which are more concentrated in the central and northern Red Sea. The results show anticyclonic eddies (AEs) on the eastern side of the Red Sea and cyclonic eddies (CEs) on the western side during winter. In summer, cyclonic eddies are more dominant for the entire Red Sea. The result shows a change in some eddies from anticyclonic during winter to cyclonic during summer in the north between 26.3 and 27.5∘ N. Furthermore, the life span of cyclonic eddies is longer than that of anticyclonic eddies.

A Survey of Helminthic Parasites of Domestic Animals in the Aberystwyth Area of Wales

1924 ◽  
Vol 2 (2) ◽  
pp. 89-94 ◽  
Author(s):  
D. O. Morgan
Keyword(s):  
Sea Level ◽  
Domestic Animals ◽  
The West ◽  
Eastern Side ◽  
Natural Boundaries

The area covered by this Survey does not admit of exact delimitation, but it might roughly be stated as that region of North Cardiganshire extending for a radius of about fifteen miles from Aberystwyth. Cardigan Bay and the Dovey Estuary form natural boundaries on the West and North respectively, while the Plynlimon range of mountains runs along the eastern side and forms an elevated plateau about 1,500 ft. above sea level. The area is therefore somewhat self-contained, comprising the more or less gradual slope from this plateau westwards to the sea.

Reliability of sea level dating using Th/U method for mollusks from the west coast of the red sea and from the atlantic coast of the Moroccan high atlas

1995 ◽  
Vol 46 (6-7) ◽  
pp. 653-654 ◽  
Author(s):  
A. Choukri ◽  
J.-L. Reyss ◽  
J.-C. Plaziat ◽  
F. Orszag-Sperber ◽  
M. Berrada
Keyword(s):  
Sea Level ◽  
Red Sea ◽  
West Coast ◽  
Atlantic Coast ◽  
The West ◽  
High Atlas

The Culicine Mosquitos of Eritrea

1943 ◽  
Vol 34 (4) ◽  
pp. 279-285 ◽  
Author(s):  
D. J. Lewis
Keyword(s):  
Aedes Aegypti ◽  
Sea Level ◽  
Yellow Fever ◽  
Red Sea ◽  
Dry Season ◽  
The West ◽  
Coast Line ◽  
Red Sea Coast ◽  
Sea Coast

A survey of the distribution of Aëdes aegypti and other Culicine mosquitos was made during the dry season of 1942, between 31st March and 15th May. The position of Eritrea gives it a particular interest in relation to the possible spread of yellow fever from Africa to the East. In the west it borders on the Anglo-Egyptian Sudan, in parts of which yellow fever is endemic, and it has a Red Sea coast line of some 600 miles, near the centre of which is the port of Massawa. The Culicines hitherto found include six that are known to be potential vectors of yellow fever.The topography and climate of Eritrea have been described by Lega, Raffaele and Canalis (1937). The country may be divided into four areas, the eastern and western plains, the mountain slopes and the plateau. The latter, on which lie several of the towns, is from about 1,900 to 2,500 metres (some 6,200 to 8,200 feet) above sea level.

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