دورية أكاديمية
Spatio-temporal dynamics of suspended particulate matter in the middle Niger River using in-situ and satellite radiometric measurements
| العنوان: | Spatio-temporal dynamics of suspended particulate matter in the middle Niger River using in-situ and satellite radiometric measurements |
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| المؤلفون: | Moussa Boubacar Moussa, Amadou Abdourhamane Touré, Laurent Kergoat, Bruno Lartiges, Emma Rochelle-Newall, Elodie Robert, Marielle Gosset, Bachir Alkali Tanimoun, Manuela Grippa |
| المصدر: | Journal of Hydrology: Regional Studies, Vol 41, Iss , Pp 101106- (2022) |
| بيانات النشر: | Elsevier, 2022. |
| سنة النشر: | 2022 |
| المجموعة: | LCC:Physical geography LCC:Geology |
| مصطلحات موضوعية: | Middle Niger River, Suspended particulate matter, Optical remote sensing, Discharge, Kaolinite, Sentinel-2 MSI data, Physical geography, GB3-5030, Geology, QE1-996.5 |
| الوصف: | Study Region: Middle Niger River Basin (MNRB), Ansongo to Niamey, Sahel, West Africa.Study Focus: Although MNRB hydrology and the red flood phenomena have been addressed in the past literature, water quality parameters and suspended particulate matter (SPM) dynamics remain poorly known. SPM impacts dam silting, exacerbating flooding, and microbial water quality. This study couples in-situ SPM measurements to radiometric measurements by in-situ and satellite sensors to analyse the temporal and spatial evolution of SPM in the MNRB and assess the contribution of the local flood (red flood) to SPM in Niamey.New Hydrological Insights for the Region: SPM is composed of very fine kaolinites with a major mode around 200–300 nanometers which results in high reflectance in the visible and infrared bands. Radiometric measurements by both radiometer and Sentinel-2 MSI sensors are well correlated to in-situ SPM, allowing efficient spatio-temporal monitoring of SPM concentration. SPM increases very rapidly at the beginning of the rainy season, reaching a peak, characterized by very high SPM values, about one month before the red flood. Satellite data highlight the significant contribution of the right bank tributaries to SPM in the MNRB during this period. SPM then decreases and remains low despite the second runoff increase (black flood) arriving in Niamey after the end of the rainy season from the upper basin. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2214-5818 |
| Relation: | http://www.sciencedirect.com/science/article/pii/S2214581822001197; https://doaj.org/toc/2214-5818 |
| DOI: | 10.1016/j.ejrh.2022.101106 |
| URL الوصول: | https://doaj.org/article/796f6711b96143f2ae44743f0b994d5a |
| رقم الأكسشن: | edsdoj.796f6711b96143f2ae44743f0b994d5a |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 22145818 |
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| DOI: | 10.1016/j.ejrh.2022.101106 |