%PDF-1.4 % 1 0 obj << /Type /Pages /Count 2 /Kids [ 2 0 R 127 0 R ] >> endobj 2 0 obj << /Type /Page /Parent 1 0 R /Resources << /ProcSet [ /PDF /Text /ImageB /ImageC /ImageI ] /Font << /QuickPDFF2691c8fa 76 0 R /QuickPDFF2923cda9 126 0 R >> >> /Contents [ 5 0 R ] /MediaBox [ 0 0 595.2756 841.8898 ] /CropBox [ 0 0 595.2756 841.8898 ] >> endobj 3 0 obj << /Type /Catalog /Pages 1 0 R /Metadata 129 0 R >> endobj 4 0 obj << /Producer (Debenu Quick PDF Library 11.15 \(www.debenu.com\)) /Creator (Debenu Quick PDF Library 11.15 \(www.debenu.com\)) /CreationDate (D:20230622205746+02'00') /ModDate (D:20230622205749+02'00') >> endobj 5 0 obj << /Length 3575 /LC /iSQP >> stream 0 Tr /QuickPDFF2923cda9 14 Tf 0 0 0 rg 100 Tz 0 Tw 0 Tc 0 Ts BT 1 0 0 1 81.2188 770.8329 Tm (GIS and Remote Sensing Based Assessment of Hydro-Geomorphological)Tj 1 0 0 1 162.3278 752.1709 Tm (Parameters of Lower Niger Basing in Nigeria)Tj ET /QuickPDFF2923cda9 11 Tf 0 0 0 rg BT 1 0 0 1 90.4473 717.2179 Tm (Udo Emmanuel Ahuchaogu, C. Ojinnaka Oliver and C Chukwuocha Akajiaku \(Nigeria\))Tj ET /QuickPDFF2923cda9 11 Tf 0 0 0 rg BT 1 0 0 1 56.6929 675.188 Tm 14.663 TL (Key words: )' ET /QuickPDFF2691c8fa 11 Tf 0 0 0 rg BT 1 0 0 1 141.7323 675.188 Tm 14.454 TL (Coastal Zone Management; Hydrography; Remote sensing; Spatial planning;)' (Morphometric Analysis, River basin, Remote Sensing)' ET /QuickPDFF2923cda9 11 Tf 0 0 0 rg BT 1 0 0 1 56.6929 632.6683 Tm 14.663 TL (SUMMARY)' ET /QuickPDFF2691c8fa 10 Tf 0 0 0 rg BT 1 0 0 1 56.6929 176.9897 Tm 13.14 TL (__________________________________________________________________________________________)' ()' (GIS and Remote Sensing Based Assessment of Hydro-Geomorphological)' (Parameters of Lower Niger Basing in Nigeria)' (\(11811\))' (Udo Emmanuel Ahuchaogu, C. Ojinnaka Oliver and C Chukwuocha Akajiaku \(Nigeria\))' ()' (FIG Working Week 2023)' (Protecting Our World, Conquering New Frontiers )' (Orlando, Florida, USA, 28 May1 June 2023)' ET /QuickPDFF2691c8fa 11 Tf 0 0 0 rg BT 1 0 0 1 56.6929 604.3219 Tm 14.454 TL (ABSTRACT)' ()' (Conservation of natural resources is of prime importance for environmental protection and sustainable)' (development therefore it requires the use of state-of-the-art technologies for effective management. Remote)' (sensing and GIS have emerged as most powerful tools for development and management of regional)' (hydrological models for solving various hydrological problems. Therefore, in this study,)' (hydro-morphological assessment of lower Niger basin has been carried out to understand its hydrological,)' (geological and topographical attributes by analyzing ASTER DEM in geographic information system)' (environment. ASTER data was used for preparation of digital elevation model and GIS was used for)' (evaluation of linear, areal and relief aspect of morphometric parameters. Basic terrain, hydrological models)' (and quantitative attributes of the basin such as 3-D Landscape, 2.5-D surface, sub-catchments, flow)' (direction, channel networks, drainage density, stream orders, stream frequency etc has been processed using)' (the elevation raster in GIS environment. Ground truthing and accuracy assessment has been carried out to)' (ensure the reliability of the result. Based on Strahlers method of stream ordering, the river basin is)' (designated as 4th order basin, with 1st order streams mostly dominating. The overall stream network)' (revealed a hierarchy of 1st, 2nd, 3rd order streams with river Niger positioned as 4th order streams in the)' (hierarchy. This study reveals a total number of 188 streams draining an area of 70959.175square kilometers)' (of land. Further investigation revealed that there are three \(3\) fourth order streams, thirteen \(13\) third order)' (streams, twenty six \(26\) second order streams, and one hundred and thirty six \(136\) first order streams.)' (Further morphometric assessments revealed that the basin has a drainage density of 0.0665km-1 , stream)' (frequency of 2.452 x 10-3, circulatory ratio of 0.310, elongation ratio of 0.40, Form factor of 0.128 and basin)' (length of 745.976km. These geometric attributes attest that the basin is drainage course textured, elongated)' (in shape and of low discharge )' ET endstream endobj 6 0 obj << /Length 316 /Filter /FlateDecode >> stream xMRKnCAۿSpk`y^Uu[jIɒT%C/:b}Rx\%=
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