Flux of particulate inorganic matter through the Niger River into the Atlantic ocean |
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| Institution: | 1. Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, School of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing 210044, Jiangsu Province, China;2. Discipline of Physics, School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Durban 4000, KwaZulu-Natal, South Africa;3. Aerosol and Atmospheric Research Laboratory, Department of Physics, Sri Krishnadevaraya University, Anantapur 515 003, Andhra Pradesh, India;1. School of Planning, Public Policy, and Management, 1209 University of Oregon, Eugene, OR 97403-1209, USA;2. Dept. of Geography, Omar Bongo University, 680 Avenue Président Léon MBA, Libreville 13131, Gabon;3. The National Anti-Pollution Center, BP 3 241, STFO, Libreville, Gabon;4. College of Public Health and Human Sciences, Oregon State University, 116 Milam Hall, 2520 SW Campus Way, Corvallis, OR 97331, USA;1. Laboratoire de Spectrométrie des Matériaux et Archéomatériaux (LASMAR), Unité de Recherche Associée au CNRST, URAC 11, Université Moulay Ismail, Faculté des Sciences, Zitoune BP 11201, 50000 Meknès, Morocco;2. Institut National des Sciences de l’Archéologie et du Patrimoine (INSAP), BP 6828, Madinat al Irfane, avenue Allal El Fassi, Angle rues 5 et 7, Rabat-Instituts, Morocco;3. Institute of Atmospheric Sciences and Climate, ISAC-CNR, via Gobetti 101, 40129 Bologna, Italy;4. Laboratoire d’Analyse par Activation Neutronique, Centre National de l’Energie, des Sciences et des Techniques Nucléaires (CNESTEN), Rabat, Morocco;1. Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, School of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing 210044, Jiangsu Province, China;2. Discipline of Physics, School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Durban 4000, South Africa;3. Sri Ramanujan Institute of Technology, B. K. Samudram Mandal, Ananthapuramu 515 701, Andhra Pradesh, India;1. Faculty of Chemistry, University of Sciences and Technology Houari Boumediene (USTHB), BP 32 El-Alia, Bab-Ezzouar, 16111, Algiers, Algeria;2. Departments of Chemistry, University of Akli Mohand Oulhadj, Bouira, 10000, Algeria;3. Istituto sull'' Inquinamento Atmosferico del C.N.R., Area della Ricerca di Roma, Via Salaria Km 29.300, C.P.10, 00015, Monterotondo Scalo, RM, Italy;4. Unité de Recherche en Analyse et Développement Technologiques en Environment, Centre de Recherche Scientifiques et Techniques en Analyses Physico-chimiques (UR-ADTE/CRAPC), BP 384, Bou-Ismail, 420004, Tipaza, Algeria;5. Centre de Développement des Energies Renouvelable (CDER), BP 62, Route de l''Observatoire, Bouzaréah, Algiers, Algeria |
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| Abstract: | The solid load level in the Niger River proved to be subject to distinct seasonal variations, the highest concentration being attained well before peak river discharge.A total of 25.4×109 kg of sediment was flushed into the Atlantic through the drainage system in 1980–1981, representing an upward review of a previous estimate statedin Martins (1982). The specific erosion rate then becomes 20.5·103kg·km−2·y−1, the highest so far measured in Africa.The composition of the transported sediment reflects the chemical disintegration of silicate rocks predominant in the basin. |
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