scholarly journals Changes in the Value of Sinuosity Index in Komering River Channel, Province South Sumatera Years 1990 - 2016

2019 ◽  
Vol 338 ◽  
pp. 012024
Author(s):  
E. Kusratmoko ◽  
A. Wibowo ◽  
A. Ahmad Kurnia
Keyword(s):  
River Channel ◽  
Sinuosity Index

scholarly journals Evaluation of Sinuosity Index of Dhansiri (South) River Channel and Bank Erosion, Assam in GIS

IARJSET ◽  
2015 ◽  
Vol 2 (5) ◽  
pp. 111-114 ◽  
Author(s):  
Plabita Barman ◽  
Dulal C.Goswami
Keyword(s):  
Bank Erosion ◽  
River Channel ◽  
Sinuosity Index

Development of a processing chain of multispectral Sentinel–2 data to extract meandering river courses for geomorphometric analysis in Central Amazonia Region

2020 ◽  
Author(s):  
Noémi Kósa ◽  
Balázs Székely
Keyword(s):  
River Channel ◽  
Tectonic Activity ◽  
Normal Faults ◽  
Sinuosity Index ◽  
Meandering River ◽  
Data Processing Method ◽  
High Resolution Satellite Images ◽  
Central Amazonia ◽  
Water Courses ◽  
Channel Patterns

<p>Freely-meandering rivers are sensitive indicators of neotectonic activity that is otherwise difficult to detect in low-relief areas. In this study sinuosity analysis has been carried out on 20 main rivers and tributaries of Central Amazonia Region as an aid for localization of river channel patterns influenced by on-going tectonic activity.</p><p>The main problem of such studies, however, the availability of accurate river channel data. For the Central Amazonia Region highly accurate dataset that has a good geographical coverage is hardly available: the datasets we found did not fulfill the accuracy criteria for our project.</p><p>Consequently, the first objective of this project was to develop a data processing method of high resolution satellite images which provides a quick and accurate way to digitize river sections of a large parts of the intracratonic sedimentary basin. Furthermore, this work aims to detect channel sinuosity changes that could indicate recent vertical crustal movements. To achieve this, the water courses were automatically digitized using Sentinel–2 data and classic sinuosity values were calculated using several window sizes. The distribution of sinuosity variations was analysed by classification and various representations of the calculated values like mapping, crossplots and sinuosity-spectrum.</p><p>As the visualization methods complement each other the variations in sinuosity values can be highlighted and verified in several aspects. The results compared to former neotectonic studies some significant sinuosity changes can be correlated to known faults. The mentioned sinuosity variations coincides with the location of NW–SE normal and thrust faults active since Pleistocene times and NE–SW Miocene normal faults supporting the idea that these structures may have been reactivated.</p><p>In conclusion, multi-window sinuosity index calculation applied to satellite data based digitized water courses is a useful tool for recognizing recent tectonic activity in large low-relief areas, such as Central Amazonia.</p>

scholarly journals Linkages Between Sinuosity Index and Flood Sustainability: A Study of Morna River (Maharashtra), India

2021 ◽  
Vol 16 (2) ◽  
pp. 649-661
Author(s):  
Nilesh K. Susware ◽  
Jagdish B. Sapkale ◽  
Vinaya N. Susware ◽  
Shubham K. Gavhane
Keyword(s):  
Agricultural Land ◽  
Morphological Changes ◽  
Water Discharge ◽  
Research Work ◽  
Flood Management ◽  
River Channel ◽  
Flood Events ◽  
Sinuosity Index ◽  
Channel Changes ◽  
Stability And Instability

The morphological changes in the river channel over periods that occur due to the flood events, affected the sinuosity index of the river channel. The river characteristic like sinuosity also determines the intensity of flood in a channel. Recent flood losses have increased as a result of variability in rainfall; simultaneously such problems are coming up with sustainable development. The attempted research study has been carried out to evaluate and understand the river channel changes and bank stability of the Morna river in Maharashtra. The research work also identified the pattern/planform of the river. Morna river meets Warna river near the Mangle village. Most of the streams in the upper basin area are non-perennial. The occurrence of floods takes place due to seasonal rainfall. An index of Sinuosity was used to analyze variation in river courses, as well as identify stability and instability. Therefore, this may facilitate predicting probable riverbank erosion sites and also support sustainable flood management planning for these sites during forthcoming flood events. The sinuosity index of the Morna river ranges from 1.09 to 1.44. The sinuosity indexes for the Morna river and tributaries of its sub-basins/watersheds have been calculated using geospatial techniques. The disparities in sinuosity indexes of the Morna basin and sub-watersheds having a good correlation with slope of the river , fluvial processes, water discharge and hydraulic aspects of the river channel. Seasonal potential flood risk for the agricultural land may be found at the confluence of the Warna river and its tributary Morna river when it receives heavy rainfall in upstream.

Interpretation classification of river channel images

2010 ◽  
Vol 30 (11) ◽  
pp. 2995-2997
Author(s):  
Lu-qiang XU ◽  
Jing-xia LIN ◽  
Yun-bing SHI ◽  
Jun QIN
Keyword(s):  
River Channel

Organic and Trace Metal Pollution in the Sediments of the Kishon River (Israel) and Possible Influence on the Marine Environment

1993 ◽  
Vol 27 (7-8) ◽  
pp. 439-447 ◽  
Author(s):  
Y. Cohen ◽  
N. Kress ◽  
H. Hornung
Keyword(s):  
Trace Metals ◽  
Marine Environment ◽  
River System ◽  
River Channel ◽  
Disposal Site ◽  
Lower Reach ◽  
Deposition Area ◽  
Long Time ◽  
Water Disposal ◽  
Sediment Particles

The sediments of the lower reach of the Kishon river, its harbors and estuary, sampled in 1989-1991, were highly polluted by trace metals and petroleum derived compounds released by the adjacent industries. The contamination was highest in the sediment deposition area of the Kishon fishing harbor and decreased seaward. River-borne pollution was also evident in Haifa Bay opposite the Kishon estuary. Contaminants trapped in the sediments of the lower Kishon river system can reach the marine environment through bottom transport of sediment particles and also as a result of disposal at sea of dredge spoils from the river channel and harbors. On the basis of the findings of the study, it was recommended to stop the long-time practice of dumping dredge spoils from the Kishon fishing harbor into the relatively clean Haifa Bay and to use instead an offshore deep water disposal site.

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