| DOI: | 10.1007/s11069-021-04604-0
|
| 论文题名: | The 2016 flood of Bihar, India: an analysis of its causes |
| 作者: | Das A.; Santra P.K.; Bandyopadhyay S.
|
| 刊名: | Natural Hazards
|
| ISSN: | 0921030X
|
| 出版年: | 2021
|
| 卷: | 107, 期:1 | | 起始页码: | 751
|
| 结束页码: | 769
|
| 语种: | 英语
|
| 中文关键词: | Bansagar Dam
; Bihar flood
; Dam discharge
; Farakka Barrage
; Ganga flood
|
| 英文关键词: | dam
; disaster management
; discharge
; drainage network
; flood damage
; flood frequency
; MODIS
; peak flow
; satellite data
; satellite imagery
; Shuttle Radar Topography Mission
; Bihar
; Ganges River
; India
|
| 英文摘要: | Flood is common in the sub-Himalayan plains of the Indian state of Bihar. During the massive flood of the Ganga between 18 and 31 August 2016, 15 (out of 38) districts and 3459 villages of the state were affected. The flood inundated 6006 km2 of area, harmed 8.82 million people, and caused damages worth US$ 73.99 million. To investigate the factors behind the event, we utilised SRTM elevation data and Landsat-8 OLI images to extract drainage networks and reservoirs of the region. Inundated area was delineated using MNDWI on MODIS data of 25-Aug-2016. Different hydrometeorological parameters employed in the study include percentage departure of monthly rainfall, discharge data of selected dams and barrages, and gauge data from six stations along a 526 km stretch of the Ganga: Buxar, Gandhi Ghat (Patna), Hathidah, Munger, Kahalgaon, and Manikchak Ghat. It was found that the flood was mainly caused by rapid release of water from the Bansagar Dam on the Son from 18 to 20-Aug-2016, as a tropical storm traversed through its upper catchment. Contributions from the Ganga’s Himalayan tributaries and upstream of the flooded area were negligible. The flood peak (50.52 m), recorded at Gandhi Ghat on 21 August 2016, passed downstream, and reached Manikchak Ghat (25.78 m) on 27–28 August 2016. The upstream extension of flooding due to the highest recorded flood level of 26.66 m of the Ganga at Farakka can only reach up to 6 km above Kahalgaon. Therefore, impoundment of the Ganga by the Farakka Barrage cannot have any impact on inundation of the areas above that limit and did not cause the 2016 floods. © 2021, The Author(s), under exclusive licence to Springer Nature B.V. part of Springer Nature. |
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/168974
|
| Appears in Collections: | 气候变化与战略
|
|
There are no files associated with this item.
|
|
作者单位: | Department of Geography, University of Calcutta, 35 Ballygunj Circular Road, Kolkata, 700019, India
|
| Recommended Citation: | |
Das A.,Santra P.K.,Bandyopadhyay S.. The 2016 flood of Bihar, India: an analysis of its causes[J]. Natural Hazards,2021-01-01,107(1)
|
|
|