Applied Research in Geographical Sciences

Applied Research in Geographical Sciences

Investigation of morphology changes in Karun River and its hazards (Case Study: Bandagir to Khorramshahr)

Authors
Amir Saffati 1
EzatAllah ghanavati 1
Hamid Alipour Dezdouli Asl 2
1 Associate Professor, kharazmi University
2 phd student, kharazmi University
10.52547/jgs.23.68.199
Abstract
Studying the morphology of the rivers and identifying the causes of these changes are widely useful in determining the evolution of rivers and planning the maintenance of the river system. The Karun River, between Bandar-e-Khoramshahr and the constant flow of water in the country, plays an important role in the country's water cycle. Due to the morphological changes of this river that have disrupted the normal functioning of the river, it is necessary to investigate the morphological changes and its causes. In this study, with the aim of investigating these changes with satellite imagery, Landsat images for 1990, 2005 and 2018 were prepared and morphological changes were extracted after required processing. The results show that out of the 36 investigated sections, the width of the river has decreased in 29 sections so that it has narrowed to 450 m around Ahwaz. In order to investigate the causes of changes, the effective parameters in changes such as precipitation, discharge, runoff coefficient, waterway length, permeability coefficient, landform, lithology, land use change, wasteland, slope percentage, drainage density and vegetation density, land Theology and floodplains, To assess the hazards of the area, were used. Floodplain parameter was extracted using ANP_Fuzzy model and landslide and land use parameters were extracted using SVM model. Among the factors affecting these changes that were investigated using logistic regression models and factor analysis were land use changes, vegetation density and sediment yield. These changes have resulted in the destruction of natural habitats along the river, the ability to self-purify water, sudden floods, threatening and damaging human structures, agriculture, and so on.



Keywords
Bandagir
Khorramshahr
Morphological changes
Remote Sensing
land use change
Boix-Fayos G. Barberá F. López-Bermúdez V.M. Castillo M. (2007). Effects of check dams, reforestation and land-use changes on river channel morphology: Case study of the Rogativa catchment (Murcia, Spain) Geomorphology 91 (2007).
Bawa, N., Jain, V., Shekhar, Sh., Kumar, N. and Jyani, V. (2014). Controls on morphological variability and role of stream power distribution pattern, Yamuna River, western India. Elsevier, Geomorphology.
Clerici A. Perego S. Chelli A. Tellini C (2015) Morphological changes of the floodplain reach of the Taro River (Northern Italy) in the last two centuries, vol 527.pp 1106-1122.
Di Silvio G and Nones M (2013) Morphodynamic reaction of a schematic river to sediment input changes:Analytical approaches, pp 1-8.
Henshaw, A.J. Thorne, C.R. Clifford, N.J. (2013), Identifying causes and controls of river bank erosion in a British upland catchment, CATENA, Volume 100, Pages 107–119.
Manjusree. P, Satyanarayana. P, CM. Bhatt, Sharma. SVSP and Srinivasa Rao. G, (2015). “River sensing and GIS for river morphology studies”. Remote Sensing Applications Area, National Remote Sensing Centre ISRO, Department of Space, Hyderabad - 500 037.
Ollero, A. 2010. Channel changes and floodplain management in the meandering middle Ebro River, Spain. Geomorphology, 117(2):247-260.
Stevenson, D. (2009). 1D HEC RAS model and sensitivity analysis for River Clair from 1971– 2007, report prepared for international joint commission nternational upper Great Lakes study, Ottawa.
Treitz, P., (2003), Remote sensing for mapping and monitoring land-cover and landuse change an introduction, www.elsevier.com.
Jenesen, J., R, 1986, Introductory Digital Image Processing, Prentice Hall, USA, pp 177-226.
- Weng, Q., (2002), Land Use Change Analysis in the Zhujiang Delta of China using Satellite Remote Sensing, GIS, and Stochastic Modeling, Journal of Environmental Management, 64, pp 273-284.
Wasige, J. E., Groen, T. A., Smaling, E., & Jetten, V. (2013). Monitoring basin-scale land cover changes in Kagera Basin of Lake Victoria using ancillary data and remote sensing. International Journal of Applied Earth Observation and Geoinformation, 21, 32-42.
Yan, Y., (2003), Object-based Classification of Remote Sensing Data for Change Detection. www.elsevier.com / locate / isprsjprs.
Yasser Raslan and Radwa Salama (2015) Development of Nile River islands between Old Aswan Damand new Esna barrages. Vol 29. Pp 77-92.