Analyzing the hydro-morphological indicators of the Balharoud river with the aim of determining the trend and causes of riverbed change
The Rivers and the Canals are a completely dynamic system and their morphological patterns has been changed continuously over the time, which sometimes lead to erosion and damage to coastal facilities and border displacement. Therefore, its hydrologic behavior should always be considered. Iran has s...
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Kharazmi University
2018-03-01
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| Series: | تحقیقات کاربردی علوم جغرافیایی |
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| Online Access: | http://jgs.khu.ac.ir/article-1-2908-en.pdf |
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| author | Tayebeh Kiani Mohsen Pourbashir Hir |
| author_facet | Tayebeh Kiani Mohsen Pourbashir Hir |
| author_sort | Tayebeh Kiani |
| collection | DOAJ |
| description | The Rivers and the Canals are a completely dynamic system and their morphological patterns has been changed continuously over the time, which sometimes lead to erosion and damage to coastal facilities and border displacement. Therefore, its hydrologic behavior should always be considered. Iran has several border rivers with its neighbors that its necessary be studied of wise “the bed change approach. In this research, the Balehradud Border River, which forms 62 km from Iran's border with the Republic of Azerbaijan in Ardebil province, be studied based on the substitution approach by studying the hydromorphic indices of the Sinuosity coefficient, bending radius and central angle for the period 1955 and 2016 respectively using the map of Protocol 1/25000 and satellite imagery of ETM. And the indexes were calculated in AutoCAD and Arc maps software. The results show that the Meandering pattern has become more intense over the period of 61 years and the rate of river bed changes has been very high. As for the Sinuosity coefficient, the number of curves of river increase to 857 in year 2016 than 591 bends in year 1955 which indicates a significant change in river morphology. The values of curvature radius in the whole range confirm the existence of approximately the same arch along the river's path. This indicator for year 1955 shows that upstream have more meandering from downstream and versa this mode for the year 2016. Which can be due to climatic and tectonic changes. Also, a number of factors such as human interactions, climatic conditions, vegetation, loose tissue, are involved in the River bed change. It is important to take protective measures, such as stabilizing the coast and increasing vegetation and preventing the dumping of the river. |
| format | Article |
| id | doaj-art-abb139fad99a4d92be4bac97ffa310db |
| institution | Kabale University |
| issn | 2228-7736 2588-5138 |
| language | fas |
| publishDate | 2018-03-01 |
| publisher | Kharazmi University |
| record_format | Article |
| series | تحقیقات کاربردی علوم جغرافیایی |
| spelling | doaj-art-abb139fad99a4d92be4bac97ffa310db2025-01-31T17:24:29ZfasKharazmi Universityتحقیقات کاربردی علوم جغرافیایی2228-77362588-51382018-03-011849111125Analyzing the hydro-morphological indicators of the Balharoud river with the aim of determining the trend and causes of riverbed changeTayebeh Kiani0Mohsen Pourbashir Hir1 Assistant prof. in geomorphology, Kharazmi University, Tehran, Iran . M.A Science in Geomorphology, Kharazmi University Tehran, Iran. The Rivers and the Canals are a completely dynamic system and their morphological patterns has been changed continuously over the time, which sometimes lead to erosion and damage to coastal facilities and border displacement. Therefore, its hydrologic behavior should always be considered. Iran has several border rivers with its neighbors that its necessary be studied of wise “the bed change approach. In this research, the Balehradud Border River, which forms 62 km from Iran's border with the Republic of Azerbaijan in Ardebil province, be studied based on the substitution approach by studying the hydromorphic indices of the Sinuosity coefficient, bending radius and central angle for the period 1955 and 2016 respectively using the map of Protocol 1/25000 and satellite imagery of ETM. And the indexes were calculated in AutoCAD and Arc maps software. The results show that the Meandering pattern has become more intense over the period of 61 years and the rate of river bed changes has been very high. As for the Sinuosity coefficient, the number of curves of river increase to 857 in year 2016 than 591 bends in year 1955 which indicates a significant change in river morphology. The values of curvature radius in the whole range confirm the existence of approximately the same arch along the river's path. This indicator for year 1955 shows that upstream have more meandering from downstream and versa this mode for the year 2016. Which can be due to climatic and tectonic changes. Also, a number of factors such as human interactions, climatic conditions, vegetation, loose tissue, are involved in the River bed change. It is important to take protective measures, such as stabilizing the coast and increasing vegetation and preventing the dumping of the river.http://jgs.khu.ac.ir/article-1-2908-en.pdfthe sinuosity coefficientcentral anglebase change of the riverbalharood rivergis. |
| spellingShingle | Tayebeh Kiani Mohsen Pourbashir Hir Analyzing the hydro-morphological indicators of the Balharoud river with the aim of determining the trend and causes of riverbed change تحقیقات کاربردی علوم جغرافیایی the sinuosity coefficient central angle base change of the river balharood river gis. |
| title | Analyzing the hydro-morphological indicators of the Balharoud river with the aim of determining the trend and causes of riverbed change |
| title_full | Analyzing the hydro-morphological indicators of the Balharoud river with the aim of determining the trend and causes of riverbed change |
| title_fullStr | Analyzing the hydro-morphological indicators of the Balharoud river with the aim of determining the trend and causes of riverbed change |
| title_full_unstemmed | Analyzing the hydro-morphological indicators of the Balharoud river with the aim of determining the trend and causes of riverbed change |
| title_short | Analyzing the hydro-morphological indicators of the Balharoud river with the aim of determining the trend and causes of riverbed change |
| title_sort | analyzing the hydro morphological indicators of the balharoud river with the aim of determining the trend and causes of riverbed change |
| topic | the sinuosity coefficient central angle base change of the river balharood river gis. |
| url | http://jgs.khu.ac.ir/article-1-2908-en.pdf |
| work_keys_str_mv | AT tayebehkiani analyzingthehydromorphologicalindicatorsofthebalharoudriverwiththeaimofdeterminingthetrendandcausesofriverbedchange AT mohsenpourbashirhir analyzingthehydromorphologicalindicatorsofthebalharoudriverwiththeaimofdeterminingthetrendandcausesofriverbedchange |