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Global Geology 2011, 14(4) 241-248 DOI:
ISSN: 1673-9736 CN: 22-1371/P |
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Monitoring of coastline changes along the Red Sea,Yemen based on remote sensing technique |
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Aref A.Sagheer1, Ahmed Humade1 and Aref M.O.Al-Jabali2 |
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1. Marine Science and Environment Faculty,Hodeidah University,Yemen 2. Geological Survey and Mineral Resources Board,Sana'a,Yemen |
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Abstract:
The coastline changes along Yemen's the Red Sea ( Al-muka,Al-khohah,Al-tiaf,Ras Katib and Al- Urji spits) were studied using a series of landsat images ( MSS,TM and ETM + ,1972,1989,2000,2006) , coupled with geomorphological,sedimentological and meteorological findings. Comparison of satellite images provided a viable means for establishing long-term coastal changes ( accretion and erosion) as observed in the studied spits ( Al-Urj,Ras Sham,Ras Maemoon,Ras Katib,Al-Mandar,Nukhaylah,Mujamilah,Ras Ashab Abu-Zahr and Mukha) . The rate of the spit accretion has the greatest value up to 89 pixel /year corresponding to 72 290 m2 /year in Mukha,while the spit erosion shows greatest value up to 131 pixel /year corresponding to 106 404 m2 /year in Mujamilah. The patterns of accretion and erosion along the spits depend on the spit direction, natural processes mainly of wave-induced longshore currents,the sediments supply and depth of sea. |
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Keywords:
coastline change
landsat images
Yemen
Red Sea
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