Channel planform dynamics of lower Ramganga River, Ganga basin, GIS and remote sensing analyses

被引：15

作者：

Agnihotri, Ashwani Kumar ^{[1
]}

Ohri, Anurag ^{[1
]}

Mishra, Sachin ^{[2
]}

机构：

[1] Indian Inst Technol BHU, Dept Civil Engn, Varanasi, Uttar Pradesh, India

[2] Indian Inst Technol BHU, Dept Chem, Varanasi, Uttar Pradesh, India

来源：

GEOCARTO INTERNATIONAL | 2020年 / 35卷 / 09期

关键词：

Channel planform dynamics; remote sensing; GIS; Ramganga; sinuosity index; WESTERN PART; INDIA; GEOMORPHOLOGY; MOVEMENT; COURSES; VALLEY; PERIOD;

D O I：

10.1080/10106049.2018.1552323

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Ramganga River is characterized by frequent planform changes in its lower reaches. The plain topography and frequent floods occurrence are powerful agents to change the river morphology. This paper presents a detailed account of channel planform dynamics of River from 1780 to 2017. Spatial data were analyzed in GIS to determine changes in sinuosity, centerline migration rates and large-scale dynamics of the River. The results revealed its overall shifting towards south-west direction. In upstream, planform repeatedly oscillated in its floodplain. In the downstream, a highly stable reach is found which does not show any significant shifting character in last 50 years, but a major avulsion of 11 km is found in its confluence with the Ganges. The study provides recent and reliable information on the channel planform dynamics and will help as a decision support tool for designing and implementation of drainage development works.

引用

页码：934 / 953

页数：20

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