تصفح حسب المؤلف "Al-Ansari, Ebrahim M. A. S."
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Hypoxia in the central Arabian Gulf Exclusive Economic Zone (EEZ) of Qatar during summer season
Al-Ansari, Ebrahim M.A.S.; Rowe, G.; Abdel-Moati, M.A.R.; Yigiterhan, O.; Al-Maslamani, I.; Al-Yafei, M.A.; Al-Shaikh, I.; Upstill-Goddard, R.... more authors ... less authors ( Elsevier , 2015 , Article)Abstract One of the most fascinating and unexpected discoveries during the Qatar University Marine Expeditions to the marine Exclusive Economic Zone (EEZ) of Qatar in 2000–2001, was the detection of a hypoxic water layer ... -
Long-term assessment of onshore and offshore wind energy potentials of Qatar
Aboobacker, Valliyil Mohammed; Shanas, Puthuveetil Razak; Veerasingam, Subramanian; Al-Ansari, Ebrahim M.A.S.; Sadooni, Fadhil N.; Vethamony, Ponnumony... more authors ... less authors ( MDPI AG , 2021 , Article)Exploitation of conventional energy resources has caused a deliberate increase in the emitted carbon in the atmosphere, which catalyzes global warming trends. This is a matter of concern, especially in Qatar, where fossil ... -
The maxima in northerly wind speeds and wave heights over the Arabian Sea, the Arabian/Persian Gulf and the Red Sea derived from 40 years of ERA5 data
Aboobacker, V.M.; Aboobacker, V. M.; Shanas, P. R.; Al-Ansari, Ebrahim M.A.S.; Sanil Kumar, V.; Vethamony, P.... more authors ... less authors ( Springer , 2020 , Article)Recent studies point out the importance of northerly winds and waves in the Arabian Sea, especially those due to shamal and makran events in addition to the northeast monsoon system. We have analyzed climatology and trends ... -
Mercury accumulation in Lethrinus nebulosus from the marine waters of the Qatar EEZ
Al-Ansari, Ebrahim M.A.S.; Abdel-Moati, Mohamed A.R.; Yigiterhan, Oguz; Al-Maslamani, Ibrahim; Soliman, Yousria; Rowe, Gilbert T.; Wade, Terry L.; Al-Shaikh, Ismail M.; Helmi, Ahmed; Kuklyte, Ligita; Chatting, Mark; Al-Yafei, Mehsin A. Al-Ansi... more authors ... less authors ( Elsevier , 2017 , Article)Total mercury (THg) and methylmercury (MeHg) were recorded in the commercial demersal fish Lethrinus nebulosus, caught from six locations in Qatar EEZ (Exclusive Economic Zone). Concentrations of THg decreased in the ... -
Methylmercury bioaccumulation among different food chain levels in the EEZ of Qatar (Arabian Gulf)
Hadil, Elsayed; Yigiterhan, Oguz; Al-Ansari, Ebrahim M.A.S.; Al-Ashwel, Aisha A.; Elezz, Ahmed A.; Al-Maslamani, Ibrahim A.... more authors ... less authors ( Elsevier , 2020 , Article)Methylmercury (MeHg) concentrations in three different species from different trophic levels with different amounts of Hg exposures were determined for the first time in the EEZ of Qatar. Sampling was conducted during ... -
Physical drivers of chlorophyll and nutrients variability in the Southern-Central Arabian Gulf
Jassem A., Al-Thani; Soliman, Yousria; Al-Maslamani, Ibrahim A.; Yigiterhan, Oguz; Al-Ansari, Ebrahim M.A.S. ( Academic Press , 2023 , Article)The southern-central Arabian Gulf demonstrates a poor understanding of nutrients and chlorophyll dynamics in physical-biogeochemical settings. Here, using data of chlorophyll, nutrients and hydrographic parameters collected ... -
Role of shamal and easterly winds on the wave characteristics off Qatar, central Arabian Gulf
Aboobacker, V. M.; Samiksha, S. V.; Veerasingam, S.; Al-Ansari, Ebrahim M.A.S.; Vethamony, P. ( Elsevier , 2021 , Article)Waves in the Arabian Gulf (Gulf) are dominated by shamal winds during winter and early summer. Although wave characteristics in the Gulf are broadly studied, features associated with various wind systems are not explicitly ... -
Surface waves generated by shamal and easterly winds off Qatar
Valliyil Mohammed, Aboobacker; Subramanian, Veerasingam; Al-Ansari, Ebrahim M.A.S.; Ponnumony, Vethamony ( Qatar University Press , 2021 , Poster)Waves in the Arabian Gulf are primarily controlled by the regional winds, for example, shamal winds during winter and early summer. Though Gulf wave characteristics have been heavily utilized for the design of offshore ... -
Wind energy potential along the onshore and offshore Qatar
Mohammed, Aboobacker Valliyil; Al-Ansari, Ebrahim M.A.S.; Razak, Shanas Puthuveetil; Subramanian, Veerasingam; Ponnumony, Vethamony ( Qatar University Press , 2020 , Poster)Wind energy is one among the clean and renewable energy resources. The utilization of non-conventional energies over the conventional sources helps to reduce the carbon emissions significantly. The present study aims at ...