کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8913600 1640169 2018 37 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Recent Niger Delta shoreline response to Niger River hydrology: Conflict between forces of Nature and Humans
ترجمه فارسی عنوان
پاسخ کوتاه ساحلی دلتای نیجر به هیدرولوژی رودخانه نیجر: مناقشه بین نیروهای طبیعت و انسان
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی
چکیده انگلیسی
Results indicate that the entire delta coastline dramatically receded: 82% of the >400 km-long coast retreated, during the period 1950-1987; and 69% between 2007 and 2012. Prior to 1950, there was a continuation of seaward advancement along 53-74% of the delta coast. The 1950-1987 shoreline recession coincided with occurrences of two major events in the Niger River basin; these are downward trends in hydro-climatic conditions (the great droughts of the 1970s-1980s), and dam construction on the Lower Niger River at Kainji (1964-1968). The 2007-2012 event corresponded with the extensive channel dredging during 2009-2012 in the Lower Niger River from the coastal town of Warri in the south to Baro in the north. Remarkably, the largest net shoreline advancement recorded in 74% of the entire delta area occurred within a year (2012-2013), which we link to increased sediment supply to the coast caused by the '2012' floods, adjudged the worst floods in the entire Niger River Basin in the last few decades. With both anthropogenic and environmental factors inducing delta evolution, only innovative river and coastal management can determine the fortune of the future coastal development of the Niger Delta.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of African Earth Sciences - Volume 139, March 2018, Pages 222-231
نویسندگان
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